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. 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.
• Colorado Springs - December »
  The months with the least rainfall in Colorado Springs are November and December Rain falls for 4.3 days and accumulates 0.63" (16mm) of rain. In Colorado Springs, during December, the rain falls for 4.3 days and regularly aggregates up to 0.63" (16mm) of precipitation.
• 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. In Aurora during December, snow falls for 7.8 days and regularly aggregates up to 2.91" (74mm) of snow.
• Fort Collins - December »
  In Fort Collins during December, the rain falls for 1.5 days and regularly aggregates up to 0.16" (4mm) of precipitation. In Fort Collins, during December, snow falls for 3.2 days and regularly aggregates up to 1.3" (33mm) of snow.
• Boulder - December »
  In Boulder in December, during 7.2 snowfall days, 3.94" (100mm) of snow is typically accumulated. In Boulder in December, it is raining for 3.9 days, with typically 0.51" (13mm) of accumulated precipitation.
• 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 »
  The month with the least rainfall in Greeley is December, when the rain falls for 1.7 days and typically collects 0.2" (5mm) of precipitation. The months with the lowest UV index in Greeley, Colorado, are January, February, November and December, with an average maximum UV index of 2.
• Longmont - December »
  In Longmont, Colorado, in December, snow falls for 6.1 days, with typically accumulated 3.03" (77mm) of snow. In Longmont, in December, snow falls for 6.1 days, with typically accumulated 3.03" (77mm) of snow.
• Grand Junction - December »
  The month with the most snowfall in Grand Junction is December, when snow falls for 6.9 days and typically aggregates up to 3.74" (95mm) of snow. The month with the most snowfall in Grand Junction is December, when snow falls for 6.9 days and typically aggregates up to 3.74" (95mm) of snow.
• Broomfield - December »
  In Broomfield, in December, snow falls for 5.6 days, with typically accumulated 1.34" (34mm) of snow. The month with the shortest days in Broomfield is December, with an average of 9h and 24min of daylight.
• Castle Rock - December »
  The months with the least rainfall in Castle Rock are January and December Rain falls for 5.5 days and accumulates 0.55" (14mm) of rain. The months with the least rainfall in Castle Rock are January and December Rain falls for 5.5 days and accumulates 0.55" (14mm) of rain.
• 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. In Commerce City, Colorado, in December, during 1.7 rainfall days, 0.08" (2mm) of precipitation is typically accumulated.