December weather forecast
Colorado, USA

December in Colorado solidifies the winter season, with cold temperatures and snowfall becoming regular occurrences. In the Front Range cities, such as Boulder, temperatures generally range from 20°F (-6.7°C) to 45°F (7.2°C), providing a chilly but often clear environment.

The mountains are now in full winter mode, with substantial snowfall creating prime conditions for skiing, snowboarding, and other winter sports. Resorts come alive with tourists, and the high-altitude regions become a winter wonderland.

Snow also reaches the plains and lower elevations, though it is often lighter and more sporadic. The presence of snow adds a festive touch to the landscape, enhancing the holiday ambiance that pervades the state during this month.

While December is undoubtedly cold, Colorado's high number of sunny days persists even in winter. The clear skies and bright sunshine provide some respite from the chill, particularly during midday.

The Eastern Plains experience a quiet winter pattern, with agriculture at rest and temperatures often dipping below freezing. The diurnal temperature range is still pronounced, reflecting the continental climate of this region.

Extreme cold temperatures can be recorded, particularly in the mountainous regions. For example, the temperature in Maybell dropped to -61°F (-51.7°C) on February 1, 1985, highlighting the potential for severe winter weather.

December's weather in Colorado is marked by the dominance of winter, with snow-covered landscapes, cold temperatures, and a focus on winter recreation. The blend of chilly conditions with the state's renowned clear skies creates a unique winter atmosphere, celebrating the season's beauty and offering a range of outdoor opportunities. Whether in the bustling ski resorts or the tranquil plains, December captures the essence of winter in Colorado.

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• Denver - December »
  January and December are months with the least rain in Denver when the rain falls for 4.3 days and typically aggregates up to 0.39" (10mm) of rain. In Denver, Colorado, during December, the rain falls for 4.3 days and regularly aggregates up to 0.39" (10mm) of precipitation.
• Colorado Springs - December »
  The months with the least rainfall in Colorado Springs, Colorado, are November and December Rain falls for 4.3 days and accumulates 0.63" (16mm) of rain. In Colorado Springs during December, snow falls for 9.2 days and regularly aggregates up to 4.72" (120mm) of snow.
• Aurora - December »
  The month with the least rainfall in Aurora is December, when the rain falls for 4.4 days and typically collects 0.43" (11mm) of precipitation. The month with the shortest days in Aurora is December, with an average of 9h and 24min of daylight.
• Fort Collins - December »
  In Fort Collins in December, snow falls for 3.2 days, with typically accumulated 1.3" (33mm) of snow. The month with the shortest days in Fort Collins is December, with an average of 9h and 18min of daylight.
• Boulder - December »
  With an average of 9h and 24min of daylight, December has the shortest days of the year in Boulder, Colorado. In Boulder, in December, during 7.2 snowfall days, 3.94" (100mm) of snow is typically accumulated.
• Pueblo - December »
  The month with the least rainfall in Pueblo is December, when the rain falls for 3.5 days and typically collects 0.28" (7mm) of precipitation. In Pueblo in December, during 4.5 snowfall days, 1.73" (44mm) of snow is typically accumulated.
• Greeley - December »
  In Greeley in December, snow falls for 4.5 days, with typically accumulated 1.18" (30mm) of snow. The months with the highest humidity in Greeley are January and December, with an average relative humidity of 64%.
• Longmont - December »
  In Longmont in December, snow falls for 6.1 days, with typically accumulated 3.03" (77mm) of snow. In Longmont, during December, the rain falls for 4.7 days and regularly aggregates up to 0.39" (10mm) of precipitation.
• Grand Junction - December »
  The month with the shortest days in Grand Junction, Colorado, is December, with an average of 9h and 30min of daylight. In Grand Junction, during December, snow falls for 6.9 days and regularly aggregates up to 3.74" (95mm) of snow.
• Broomfield - December »
  December has the shortest days of the year in Broomfield, with an average of 9h and 24min of daylight. In Broomfield, during December, snow falls for 5.6 days and regularly aggregates up to 1.34" (34mm) of snow.
• Castle Rock - December »
  January and December are months with the least rain in Castle Rock when the rain falls for 5.5 days and typically aggregates up to 0.55" (14mm) of rain. In Castle Rock during December, snow falls for 8.4 days and regularly aggregates up to 3.86" (98mm) of snow.
• Commerce City - December »
  The months with the least rainfall in Commerce City are January and December Rain falls for 1.7 days and accumulates 0.08" (2mm) of rain. January and December are months with the least rain in Commerce City when the rain falls for 1.7 days and typically aggregates up to 0.08" (2mm) of rain.