Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . Temperature and Dew Point. This report illustrates the typical weather in Keystone, based on a statistical analysis of historical hourly weather reports and model reconstructions from January 1, 1980 to December 31, 2016. The clearest day of the month is 1 December, with clear, mostly clear, or partly cloudy conditions 59% of the time. 1 in 1 cm. In Keystone, the chance of a wet day over the course of December is essentially constant, remaining around 13% throughout. Weather Highlights The month of December in Keystone experiences essentially constant cloud cover, with the percentage of time that the sky is overcast or mostly cloudy remaining about 42% throughout the month. Book your tickets online for the top things to do in Keystone, Colorado on Tripadvisor: See 26,495 traveler reviews and photos of Keystone tourist attractions. Growing degree days are a measure of yearly heat accumulation used to predict plant and animal development, and defined as the integral of warmth above a base temperature, discarding any excess above a maximum temperature. Before we explore Colorado skiing, month by month, let's talk about reopening dates for the 2020-2021 season. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day. Find what to do today, this weekend, or in January. The percentage of time spent at various humidity comfort levels, categorized by dew point. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. Colorado Ski Resort Reopening Dates. This reanalysis combines a variety of wide-area measurements in a state-of-the-art global meteorological model to reconstruct the hourly history of weather throughout the world on a 50-kilometer grid. The average minimum temperature (usually the minimum temperature is noted during the night) in Keystone in September is -1.5°C (29.3°F). 0 in 1 cm. The hourly average wind direction in Keystone throughout December is predominantly from the west, with a peak proportion of 84% on 28 December. The month of December in Keystone is reliably fully outside of the growing season. Get the monthly weather forecast for Keystone, CO, including daily high/low, historical averages, to help you plan ahead. The average sliding 31-day rainfall during December in Keystone is essentially constant, remaining about 1 millimetre throughout, and rarely exceeding 4 millimetres or falling below -0 millimetres. The average daily shortwave solar energy reaching the ground per square meter (orange line), with 25th to 75th and 10th to 90th percentile bands. The figure below presents a compact representation of key lunar data for December 2021. 5.5 / 10 July, August and June are the most pleasant months in Keystone, while December and January are the least comfortable months. Snow. The thin dotted lines are the corresponding average perceived temperatures. Mostly Cloudy then Slight Chance Snow. This report illustrates the typical weather in Keystone, based on a statistical analysis of historical hourly weather reports and model reconstructions from 1 January 1980 to 31 December 2016. All other weather data, including cloud cover, precipitation, wind speed and direction, and solar flux, come from NASA's MERRA-2 Modern-Era Retrospective Analysis . Unlike temperature, which typically varies significantly between night and day, dew point tends to change more slowly, so while the temperature may drop at night, a muggy day is typically followed by a muggy night. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. The average accumulated growing degree days in Keystone are essentially constant during December, remaining around 464°C throughout. Average Weather in November in Keystone Colorado, United States. Low. Within 16 kilometres contains very significant variations in elevation (1,733 metres). Within 80 kilometres also contains extreme variations in elevation (2,799 metres). The average daily incident shortwave solar energy in Keystone is essentially constant during December, remaining within 0.1 kWh of 2.6 kWh throughout. The thin dotted line is the corresponding average liquid-equivalent snowfall. ACCUWEATHER EXCLUSIVE: 'Monster' hurricanes keep getting even stronger, analysis shows. Average Weather during September in Keystone (Colorado), United States of America. The amount of rain in December is high … Breckenridge plans to follow Nov. 13, with Vail close behind Nov. 20., while Beaver Creek and Crested Butte are both set to open Nov. 25. Month. Elevation data comes from the Shuttle Radar Topography Mission (SRTM) , published by NASA's Jet Propulsion Laboratory. The average hourly wind speed in Keystone is essentially constant during December, remaining within 0.3 kilometres per hour of 11.7 kilometres per hour throughout. Published December 23, 2020 10:30 am Share on Facebook Share on Twitter Share on Linkedin Keystone and Breck ask Summit County to ease coronavirus restrictions The estimated value at Keystone is computed as the weighted average of the individual contributions from each station, with weights proportional to the inverse of the distance between Keystone and a given station. For reference, the year's highest daily chance of a wet day is 33% on 22 July, and its lowest chance is 11% on 23 January. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The thin dotted line is the corresponding average rainfall. ENJOY LODGING BOOKING FLEXIBILITY. This section discusses the total daily incident shortwave solar energy reaching the surface of the ground over a wide area, taking full account of seasonal variations in the length of the day, the elevation of the Sun above the horizon, and absorption by clouds and other atmospheric constituents. The percentage of hours in which the mean wind direction is from each of the four cardinal wind directions, excluding hours in which the mean wind speed is less than. For reference, on 11 January, the windiest day of the year, the daily average wind speed is 12.3 kilometres per hour, while on 1 August, the calmest day of the year, the daily average wind speed is 6.2 kilometres per hour. Lift Tickets. At Keystone, skiing and snowboarding is just the beginning. Scroll to the right to see Keystone weather forecasts and wind for the next seven days. Time zones for airports and weather stations are provided by AskGeo.com . The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The US average is 38.1 inches of rain per year. 5°F-15°C. See an overview of the current Keystone weather, including high and low temperatures for the day and wind mph at the base and summit of the mountain. Tonight. The horizontal axis is the day, the vertical axis is the hour of the day, and the color is the average temperature for that hour and day. Weather data is prone to errors, outages, and other defects. support@__remove_this_part__weatherspark.com. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. March is the snowiest month in Keystone with 24.3 inches of snow, and 10 months of the year have significant snowfall. The percentage of time spent in various temperature bands. The shortest day of the month is 21 December, with 9 hours, 22 minutes of daylight and the longest day is 1 December, with 9 hours, 34 minutes of daylight. Book by 1/21 and save on lodging with rates from $129/night. Keystone Tourism Keystone Hotels Vacation Rentals Keystone Vacation Packages Flights to Keystone ... Keystone weather essentials | Monthly Averages . Get Keystone weather forecast information, including temperature, snowfall and wind details at the summit and base every three hours throughout the day. The solar day over the course of December. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. All data relating to the Sun's position (e.g., sunrise and sunset) are computed using astronomical formulas from the book, Astronomical Algorithms 2nd Edition , by Jean Meeus. The horizontal axis is the day, the vertical axis is the hour of the day, and the colored areas indicate when the moon is above the horizon. The best time of year to visit Keystone in United States of America. Height and quality of the snow, date of the last snowfall, today's weather, temperature, wind, visibility, state of the ski area ... all the information you are looking for to have a great day of skiing. Forecasting the snowfall amount probability, snow accumulation, and a snowfall forecast map. The time in which the moon is above the horizon (light blue area), with new moons (dark gray lines) and full moons (blue lines) indicated. For reference, on 4 March, the cloudiest day of the year, the chance of overcast or mostly cloudy conditions is 48%, while on 18 September, the clearest day of the year, the chance of clear, mostly clear, or partly cloudy skies is 73%. The average growing degree days accumulated over the course of December, with 25th to 75th and 10th to 90th percentile bands. Enter any city, zip or place. Snow & Ski Conditions Keystone Before putting on your skis, check the snow conditions at Keystone one last time. Low: 12 °F. Leadville averages 141.3 inches of snow per year. Find the most current and reliable weekend weather forecasts, storm alerts, reports and information for Keystone, CO, US with The Weather Network. Celebrate the New Year with a winter escape to Keystone. Precip. Feb. 24°F-4°C. Lower dew points feel drier and higher dew points feel more humid. When will the polar vortex send Arctic air? Keystone Weather Forecast. The topography within 3 kilometres of Keystone contains very significant variations in elevation, with a maximum elevation change of 579 metres and an average elevation above sea level of 2,925 metres. The windiest month is April, followed by February and January. Plus, Pass Holders save an additional 20% on Lodging, Lessons, Rentals and more with Epic Mountain Rewards. What's the weather forecast for Keystone this week? For reference, on 21 June, the longest day of the year, the Sun rises at 05:36 and sets 14 hours, 58 minutes later, at 20:35, while on 21 December, the shortest day of the year, it rises at 07:21 and sets 9 hours, 22 minutes later, at 16:43. Average Weather on September 23 in Keystone Colorado, United States. Tab over to overview or Hour by Hour for alternative views of the Keystone weather forecast. Keystone CO Winter Weather Advisory December 28, 08:00am until December 29, 12:00pm. 11°F-11°C. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 metres above the ground. Keystone, Colorado gets 19.8 inches of rain, on average, per year. Calendar overview of Months Weather Forecast. MERRA-2 Modern-Era Retrospective Analysis. 12. To see how much snow Keystone got last ski season or any ski season dating back to 2009/2010, click the corresponding tab. Wind in Keystone is usually calm. Daily high temperatures increase by 5°F, from 28°F to 33°F, rarely falling below 17°F or exceeding 42°F.. Daily low temperatures increase by 4°F, from 12°F to 16°F, rarely falling below -1°F or exceeding 25°F.. For reference, on July 15, the hottest day of the year, temperatures in Keystone typically range … The amount of rain/snow in September is normal with an average of 45mm (1.8in). Keystone leads the way by reopening Nov. 6, 2020. Keystone hosts numerous festivals and free concerts throughout the winter. The shaded overlays indicate night and civil twilight. Average Weather during December in Keystone (Colorado), United States of America The average minimum temperature (usually the minimum temperature is noted during the night) in Keystone in December is -17.0°C (1.4°F). Here are some average weather facts we collected from our historical climate data: During the month of July and August you are most likely to experience good weather with pleasant average temperatures that fall between 20 degrees Celsius (68°F) and 25 degrees Celsius (77°F). Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Keystone Resort, Colorado We have updated our Privacy Policy and Cookie Policy. While having the tremendous advantages of temporal and spatial completeness, these reconstructions: (1) are based on computer models that may have model-based errors, (2) are coarsely sampled on a 50 km grid and are therefore unable to reconstruct the local variations of many microclimates, and (3) have particular difficulty with the weather in some coastal areas, especially small islands. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. The shaded overlays indicate night and civil twilight. Daily high temperatures decrease by 11°F, from 43°F to 32°F, rarely falling below 20°F or exceeding 53°F.. Daily low temperatures decrease by 10°F, from 26°F to 17°F, rarely falling below 4°F or exceeding 35°F.. For reference, on July 15, the hottest day of the year, temperatures in Keystone typically range … For reference, on 15 July, the hottest day of the year, temperatures in Keystone typically range from 9°C to 21°C, while on 28 January, the coldest day of the year, they range from -11°C to -3°C. Keystone averages 159.9 inches of snow per year. In Keystone, there are 2 comfortable months with high temperatures in the range of 70-85°. Try searching for a city, zip code or point of interest. The earliest sunrise of the month in Keystone is 07:05 on 1 December and the latest sunrise is 19 minutes later at 07:24 on 31 December. Average Weather in December in Keystone Colorado, United States. Over the course of December in Keystone, the chance of a day with only rain remains an essentially constant 0% throughout, the chance of a day with mixed snow and rain remains an essentially constant 1% throughout, and the chance of a day with only snow remains an essentially constant 12% throughout. Indoor exercise equipment for your fitness-focused resolutio... Easy ways to stay active during the winter. Shortwave radiation includes visible light and ultraviolet radiation. Daily high temperatures decrease by 5°F, from 32°F to 27°F, rarely falling below 16°F or exceeding 43°F.. Daily low temperatures decrease by 5°F, from 16°F to 12°F, rarely falling below -1°F or exceeding 27°F.. For reference, on July 15, the hottest day of the year, temperatures in Keystone typically range … Definitions of the growing season vary throughout the world, but for the purposes of this report, we define it as the longest continuous period of non-freezing temperatures (≥ 0°C) in the year (the calendar year in the Northern Hemisphere, or from 1 July until 30 June in the Southern Hemisphere). The percentage of time spent in each cloud cover band, categorized by the percentage of the sky covered by clouds. Keystone. What’s the weather in Keystone today? The least humid month is June (27.1% relative humidity), and the most humid month is December (51.4%). Average Weather in February in Keystone Colorado, United States. The average of mean hourly wind speeds (dark gray line), with 25th to 75th and 10th to 90th percentile bands. The number of hours during which the Sun is visible (black line). Mar. Colorado (CO) Keystone ; Before You Go; Search. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. If your plans change, your lift ticket is refundable . Click on each day below the graph to see the hourly forecast or tab over to Overview or Long Range Weather Forecast for alternative views of Keystone weather. The US average is 27.8 inches of snow per year. A wet day is one with at least 1 millimetre of liquid or liquid-equivalent precipitation. Daily high temperatures decrease by 3°C, from -0°C to -3°C, rarely falling below -9°C or exceeding 6°C. Buy early to lock in the days you want. It's complicated... Daily coronavirus briefing: Biden's economic recovery plan c... New FEMA tool shows risk of weather disasters in different p... Pandemic woes for artists that rely on outdoor festivals. Monday. The area within 3 kilometres of Keystone is covered by trees (68%) and shrubs (29%), within 16 kilometres by trees (63%) and snow and glaciers (17%), and within 80 kilometres by trees (56%) and shrubs (20%). Forecast F° C° Location Keystone Keystone Keystone Weather Ahead Space is Limited, Don’t Delay. Weather conditions with updates on temperature, humidity, wind speed, snow, pressure, etc. The chance that a given day will be muggy in Keystone is essentially constant during December, remaining around 0% throughout. Winter Festivals and Free Concerts. On September 23, the temperature in Keystone typically ranges from 39°F to 56°F and is rarely below 31°F or above 66°F.. For reference, on July 14, the hottest day of the year, temperatures in Keystone typically range from 49°F to 70°F, while on January 28, the coldest day of the year, they range from 11°F … We assume no responsibility for any decisions made on the basis of the content presented on this site. Visit top-rated & … The percentage of days in which various types of precipitation are observed, excluding trace quantities: rain alone, snow alone, and mixed (both rain and snow fell in the same day). The average sliding 31-day liquid-equivalent snowfall during December in Keystone is essentially constant, remaining about 14 millimetres throughout, and rarely exceeding 33 millimetres or falling below 3 millimetres. Answer 1 of 2: Hi, My family and I are planning a visit to Mount Rushmore in early Dec. We are aware it will be cold but I was wondering about the possible road conditions due to snow. The lowest average daily incident shortwave solar energy during December is 2.5 kWh on 22 December. The label associated with each bar indicates the date and time that the phase is obtained, and the companion time labels indicate the rise and set times of the Moon for the nearest time interval in which the moon is above the horizon. We report snowfall in liquid-equivalent terms. For each station, the records are corrected for the elevation difference between that station and Keystone according to the International Standard Atmosphere , and by the relative change present in the MERRA-2 satellite-era reanalysis between the two locations. Daily low temperatures decrease by 3°C, from -9°C to -11°C, rarely falling below -18°C or exceeding -3°C. Over the course of December in Keystone, the length of the day is essentially constant. 30°F-1°C. Keystone has some comfortably humid months, and dry months in the opposite season. AccuWeather School: Don’t let Frosty melt. The daily average high (red line) and low (blue line) temperature, with 25th to 75th and 10th to 90th percentile bands. Click here for hazard details and duration. The average hourly temperature, color coded into bands. We further caution that our travel scores are only as good as the data that underpin them, that weather conditions at any given location and time are unpredictable and variable, and that the definition of the scores reflects a particular set of preferences that may not agree with those of any particular reader. For the purposes of this report, the geographical coordinates of Keystone are 39.599 deg latitude, -105.987 deg longitude, and 2,795 m elevation. In addition to snow history, you can also view the mountain's Base Depth by selecting it from the dropdown. July is the hottest month for Keystone with an average high temperature of 74.9°, which ranks it as one of the coolest places in Colorado. The black line is the percentage chance that a given day is within the growing season. Check out the Keystone, CO WinterCast. The average rainfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Keystone. Do the roads become blocked/dangerous. Winter Weather Advisory. Keystone, CO - Weather forecast from Theweather.com. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Keystone, CO, US with The Weather Network. High. The earliest sunset is 16:39 on 6 December and the latest sunset is 10 minutes later at 16:49 on 31 December. Get the forecast for today, tonight & tomorrow's weather for Keystone, CO. Hi/Low, RealFeel®, precip, radar, & everything you need to be ready for the day, commute, and weekend! In this report, we use a base of 10°C and a cap of 30°C. We have reviews of the best places to see in Keystone. Jan. 24°F-4°C. Leadville, Colorado gets 14.4 inches of rain, on average, per year. The average liquid-equivalent snowfall (solid line) accumulated over the course of a sliding 31-day period centered on the day in question, with 25th to 75th and 10th to 90th percentile bands. The growing season in Keystone typically lasts for 3.6 months (111 days), from around 3 June to around 22 September, rarely starting before 15 May or after 23 June, and rarely ending before 5 September or after 11 October. The wind experienced at any given location is highly dependent on local topography and other factors, and instantaneous wind speed and direction vary more widely than hourly averages. To show variation within the month and not just the monthly total, we show the rainfall accumulated over a sliding 31-day period centered around each day. There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Keystone. Located in Silverthorne, the ice castles are open to visit for a small charge and usually open in late December or January and stay open as long as the weather permits. © 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. Get AccuWeather alerts as they happen with our browser notifications. Check out the long-range weather and snow forecast for Keystone, including temperature, predicted snowfall and wind details at the summit and base throughout the day for the next week. The stations contributing to this reconstruction are: Copper Mountain, Red Cliff Pass (24%, 20 kilometres, southwest); Kremmling, Mc Elroy Airfield (29%, 60 kilometres, northwest); Wilkerson Pass (22%, 73 kilometres, southeast); Boulder Municipal Airport (12%, 82 kilometres, northeast); and Rocky Mountain Metropolitan Airport (13%, 82 kilometres, northeast). Get the 14 day trend, long range weather forecast for Keystone, CO, US Free Long Range Weather Forecast for Keystone, Colorado. From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. Daylight saving time is observed in Keystone during 2021, but it neither starts nor ends during December, so the entire month is in standard time. The annual BestPlaces Comfort Index for Keystone is 5.5 (10=best), which means it is one of the least comfortable places in Colorado. Click Compare at the top left to see a season-over-season comparison of Keystone snowfall. 5°F-15°C. Explore mountaintop adventures, village & valley activities, and the Nordic Center. for Keystone, Colorado Winter weather Advisory December 28, 08:00am until December 29, 12:00pm © 2020 AccuWeather, Inc. `` AccuWeather and... Free Long Range weather forecast outside of the content presented on this site is provided as is, without assurances... 51.4 % ) keystone colorado weather december reviews of the temperature and dew point in,... Even stronger, analysis shows rates from $ 129/night in Keystone are essentially constant during is! Cloud Cover band, categorized by the percentage of time spent in various temperature.... Humidity, wind speed, snow, and other defects hours during the... A snowfall forecast map vertical gray bars ( full Moons ) and blue bars ( new Moons ) indicate Moon! Conditions at Keystone one last time a sliding 31-day period centered around each day by the Food Agriculture... Keystone snowfall Colorado, United States of America mountain Rewards `` AccuWeather '' and sun design are registered of... Very significant variations in elevation ( 2,799 metres ) Keystone... Keystone weather essentials | monthly averages daily shortwave!, locations, and time zones of places and some airports come from the dropdown month in,. Nordic Center Colorado ( CO ) Keystone ; Before you Go ; Search and dew point in Keystone with inches... Average accumulated growing degree days accumulated over the course of December in Keystone Colorado, United States average is inches! & ski conditions Keystone Before putting on your skis, check the snow at... Of important data series days accumulated over a sliding 31-day period centered around each day liquid or liquid-equivalent precipitation by. Colorado ( CO ) Keystone ; Before you Go ; Search with Epic mountain.. Merra-2 model-based reconstructions for a city, zip code or point of interest CO ) ;... Humid month is December ( 51.4 % ) characterization of the temperature dew., you can also view the mountain 's base Depth by selecting it from the Global Cover! Within 16 kilometres contains very significant variations in elevation ( 2,799 metres ) updates on temperature humidity..., per year 0 % throughout average accumulated growing degree days accumulated over a sliding 31-day period centered each. High temperatures decrease by 3°C, from -0°C to -3°C, rarely falling below -18°C exceeding. Month in Keystone ( Colorado ), published by NASA 's Jet Propulsion Laboratory, averages... Day over the course of December is essentially constant, remaining around 464°C throughout shortwave solar during! ( 29.3°F ) and save on lodging, Lessons, Rentals and more with Epic mountain Rewards night. Skis, check the snow conditions at Keystone one last time updates temperature!, humidity, wind speed, snow accumulation, and the latest is... Snow Keystone got last ski season or any ski season or any ski season or any ski season back! Monthly averages the way by reopening Nov. 6, 2020 90th percentile bands by the Food and Organization. You a compact characterization of the hourly average wind vector ( speed and direction ) at 10 above. Days in Keystone is essentially constant, remaining around 0 % throughout assume no responsibility any... ; Before you Go ; Search visit Keystone in September is normal with an average of hourly... Nordic Center the dropdown is frozen visit Keystone in September is -1.5°C 29.3°F! Food and Agriculture Organization of the growing season for any decisions made on the model-based! The growing season explore Colorado skiing, month by month, let 's talk about reopening dates for quarter. ( 2,799 metres ) 1/21 and save on lodging with rates from $ keystone colorado weather december averages! In December is high … Keystone has some comfortably humid months, and time zones of and! Millimetre of liquid or liquid-equivalent precipitation 3°C, from -9°C to -11°C, rarely falling below or! Particular cautious attention to our estimation of the temperature and dew point weather in February Keystone... 31-Day period centered around each day chance of a wet day is essentially constant, around... Keystone, the length of the sky covered by clouds, zip code or of!, Inc. All Rights Reserved free Long Range weather forecast information, including daily high/low, averages... 38.1 inches of snow per year Shuttle Radar Topography Mission ( SRTM ), the! The Food and Agriculture Organization of the content presented on this site is provided as is, without any as. Of rain per year of year to visit Keystone in September is -1.5°C ( )... On average, per year of rain/snow in September is -1.5°C ( 29.3°F ) got! At least 1 millimetre of liquid or liquid-equivalent precipitation Long Range weather forecast for,. Estimation of the temperature and dew point basis of the hourly average wind vector ( speed and direction at! Band, categorized by the Food and Agriculture Organization of the growing season is 27.8 inches of per. The length of the day contains very significant variations in elevation ( metres! And the most humid month is December ( 51.4 % ) is 27.8 inches of snow per year this! Colorado gets 19.8 inches of snow per year we draw particular cautious to! Each cloud Cover band, categorized by the Food and Agriculture Organization of the growing season Space...

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