Plan you week with the help of our 10-day weather forecasts and weekend weather predictions for Keystone Resort, Colorado 1 in 1 cm. 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 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. Keystone hosts numerous festivals and free concerts throughout the winter. 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. When will the polar vortex send Arctic air? 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 black line is the percentage chance that a given day is within the growing season. 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. 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). 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. Free Long Range Weather Forecast for Keystone, Colorado. We base the humidity comfort level on the dew point, as it determines whether perspiration will evaporate from the skin, thereby cooling the body. Click Compare at the top left to see a season-over-season comparison of Keystone snowfall. 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. AccuWeather School: Don’t let Frosty melt. Feb. 24°F-4°C. There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Keystone. The thin dotted line is the corresponding average liquid-equivalent snowfall. 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. 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). What’s the weather in Keystone today? There are 5 weather stations near enough to contribute to our estimation of the temperature and dew point in Keystone. Explore mountaintop adventures, village & valley activities, and the Nordic Center. This section discusses the wide-area hourly average wind vector (speed and direction) at 10 metres above the ground. ENJOY LODGING BOOKING FLEXIBILITY. 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. Keystone, Colorado gets 19.8 inches of rain, on average, per year. Mostly Cloudy then Slight Chance Snow. The US average is 27.8 inches of snow per year. Keystone averages 159.9 inches of snow per year. Precip. We have reviews of the best places to see in Keystone. 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. Names, locations, and time zones of places and some airports come from the GeoNames Geographical Database . 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. Colorado Ski Resort Reopening Dates. In addition to snow history, you can also view the mountain's Base Depth by selecting it from the dropdown. The information on this site is provided as is, without any assurances as to its accuracy or suitability for any purpose. 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). 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. Low. Average Weather in December in Keystone Colorado, United States. Leadville averages 141.3 inches of snow per year. Get the 14 day trend, long range weather forecast for Keystone, CO, US 12. Scroll to the right to see Keystone weather forecasts and wind for the next seven days. 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. 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 least humid month is June (27.1% relative humidity), and the most humid month is December (51.4%). 5°F-15°C. In Keystone, the chance of a wet day over the course of December is essentially constant, remaining around 13% throughout. 11°F-11°C. Lower dew points feel drier and higher dew points feel more humid. At Keystone, skiing and snowboarding is just the beginning. The actual depth of new snowfall is typically between 5 and 10 times the liquid-equivalent amount, assuming the ground is frozen. 5.5 / 10 July, August and June are the most pleasant months in Keystone, while December and January are the least comfortable months. Keystone Tourism Keystone Hotels Vacation Rentals Keystone Vacation Packages Flights to Keystone ... Keystone weather essentials | Monthly Averages . Jan. 24°F-4°C. High. Within 16 kilometres contains very significant variations in elevation (1,733 metres). The US average is 38.1 inches of rain per year. 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. Within 80 kilometres also contains extreme variations in elevation (2,799 metres). Snow & Ski Conditions Keystone Before putting on your skis, check the snow conditions at Keystone one last time. Leadville, Colorado gets 14.4 inches of rain, on average, per year. The average hourly temperature, color coded into bands. 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 … A wet day is one with at least 1 millimetre of liquid or liquid-equivalent precipitation. Temperature and Dew Point. The figure below shows you a compact characterization of the hourly average temperatures for the quarter of the year centered on December. The amount of rain in December is high … Buy early to lock in the days you want. As with rainfall, we consider the liquid-equivalent snowfall accumulated over a sliding 31-day period centered around each day. Lift Tickets. Mar. Visit top-rated & … The number of hours during which the Sun is visible (black line). From bottom to top, the black lines are the previous solar midnight, sunrise, solar noon, sunset, and the next solar midnight. for Keystone, Colorado Over the course of December in Keystone, the length of the day is essentially constant. 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! 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. Do the roads become blocked/dangerous. ACCUWEATHER EXCLUSIVE: 'Monster' hurricanes keep getting even stronger, analysis shows. 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. Keystone. We draw particular cautious attention to our reliance on the MERRA-2 model-based reconstructions for a number of important data series. Maps are © Esri, with data from National Geographic, Esri, DeLorme, NAVTEQ, UNEP-WCMC, USGS, NASA, ESA, METI, NRCAN, GEBCO, NOAA, and iPC. 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. 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. Snow. 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. We assume no responsibility for any decisions made on the basis of the content presented on this site. The earliest sunset is 16:39 on 6 December and the latest sunset is 10 minutes later at 16:49 on 31 December. 0 in 1 cm. Find what to do today, this weekend, or in January. 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). 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 solar day over the course of December. The clearest day of the month is 1 December, with clear, mostly clear, or partly cloudy conditions 59% of the time. The lowest average daily incident shortwave solar energy during December is 2.5 kWh on 22 December. Land Use data comes from the Global Land Cover SHARE database , published by the Food and Agriculture Organization of the United Nations. Book by 1/21 and save on lodging with rates from $129/night. Find the most current and reliable 7 day weather forecasts, storm alerts, reports and information for [city] with The Weather Network. Weather Highlights Average Weather during September in Keystone (Colorado), United States of America. The hourly average wind direction in Keystone throughout December is predominantly from the west, with a peak proportion of 84% on 28 December. Forecast F° C° Location Keystone Keystone Keystone Weather Ahead Space is Limited, Don’t Delay. Keystone has some comfortably humid months, and dry months in the opposite season. The shaded overlays indicate night and civil twilight. Keystone Weather Forecast. If your plans change, your lift ticket is refundable . 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. We report snowfall in liquid-equivalent terms. Tonight. 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. Get Keystone weather forecast information, including temperature, snowfall and wind details at the summit and base every three hours throughout the day. The percentage of time spent at various humidity comfort levels, categorized by dew point. 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 Calendar overview of Months Weather Forecast. The day, twilights (civil, nautical, and astronomical), and night are indicated by the color bands from yellow to gray. Click here for hazard details and duration. 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. Get the monthly weather forecast for Keystone, CO, including daily high/low, historical averages, to help you plan ahead. 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 … 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. © 2020 AccuWeather, Inc. "AccuWeather" and sun design are registered trademarks of AccuWeather, Inc. All Rights Reserved. The annual BestPlaces Comfort Index for Keystone is 5.5 (10=best), which means it is one of the least comfortable places in Colorado. We have updated our Privacy Policy and Cookie Policy. Month. 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. Average Weather on September 23 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. Before we explore Colorado skiing, month by month, let's talk about reopening dates for the 2020-2021 season. 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. 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 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. 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. 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). 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. From bottom (most yellow) to top (most gray), the color bands indicate: full daylight, twilight (civil, nautical, and astronomical), and full night. Time zones for airports and weather stations are provided by AskGeo.com . Wind in Keystone is usually calm. The vertical gray bars (new Moons) and blue bars (full Moons) indicate key Moon phases. The shaded overlays indicate night and civil twilight. 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 . 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. Find the most current and reliable 14 day weather forecasts, storm alerts, reports and information for Keystone, CO, US with The Weather Network. MERRA-2 Modern-Era Retrospective Analysis. Forecasting the snowfall amount probability, snow accumulation, and a snowfall forecast map. 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. What's the weather forecast for Keystone this week? 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. Celebrate the New Year with a winter escape to Keystone. 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Your plans change, your lift ticket is refundable keystone colorado weather december December low temperatures decrease by 3°C from... Which the sun is visible ( black line ) and January forecast for Keystone, the length of the weather! Of AccuWeather, Inc. `` AccuWeather '' and sun design are registered trademarks of AccuWeather, Inc. Rights... Buy early to lock in the days you want and sun design are registered trademarks of,. Black line ), published by NASA 's Jet Propulsion Laboratory direction ) 10! Falling below -9°C or exceeding 6°C Rentals and more with Epic mountain Rewards keystone colorado weather december average of 45mm 1.8in. Around keystone colorado weather december day, your lift ticket is refundable Moon phases snowfall forecast..