January weather forecast
Colorado, USA

January is the coldest month of the year in Colorado, signifying the depth of winter with frigid temperatures and substantial snowfall. In the Eastern Plains, temperatures may fall into the range of -10°F (-23.3°C) to 25°F (-3.9°C), with the mountainous regions often experiencing even lower temperatures. In contrast to the milder December, January sees an increase in the severity of cold and accumulation of snow.

Bennett, a notable city, once recorded the state's highest-ever temperature in July, but in January, it too succumbs to the winter chill. Maybell, known for recording the coldest temperature in Colorado, is often one of the chilliest areas during January.

Snowfall is prevalent in January, particularly in the high mountain ranges where it often surpasses 120" (3048mm) for the season. Ski resorts thrive during this month, attracting winter sports enthusiasts. The plains, while not as snowy, still receive a significant share of winter precipitation.

Despite the intense cold, the Front Range areas occasionally experience Chinook winds that briefly warm the temperatures. This phenomenon contrasts sharply with the otherwise harsh conditions typical of January in Colorado. The ample snowfall in the mountains and cold temperatures across the state mark a distinct difference from the coming months of late winter and early spring when the weather begins to moderate.

---

• Denver - January »
  Denver’s January weather differs from its adjacent months by featuring the coldest temperature of the year and snowfall to start the annual calendar. 
 Transitioning into January, Denver records an average high-temperature of a still wintry 40.5°F (4.7°C), almost identical to December's 39.9°F (4.4°C). The months with the least rainfall in Denver are January and December Rain falls for 3.7 days and accumulates 0.39" (10mm) of rain.
• Colorado Springs - January »
  In Colorado Springs, in January, during 8.5 snowfall days, 5.67" (144mm) of snow is typically accumulated. In Colorado Springs, during January, snow falls for 8.5 days and regularly aggregates up to 5.67" (144mm) of snow.
• Aurora - January »
  In Aurora, Colorado, during January, snow falls for 6.1 days and regularly aggregates up to 3.27" (83mm) of snow. January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Aurora, Colorado.
• Fort Collins - January »
  January, in Fort Collins is the coldest month of the year with the peak temperatures peaking no more than 37.9°F (3.3°C), while the lowest recorded temperature is a chilling 20.3°F (-6.5°C). In Fort Collins, in January, during 2.8 snowfall days, 0.91" (23mm) of snow is typically accumulated.
• Boulder - January »
  In Boulder, in January, snow falls for 6.3 days, with typically accumulated 2.87" (73mm) of snow. In Boulder, in January, it is raining for 4.3 days, with typically 0.39" (10mm) of accumulated precipitation.
• Pueblo - January »
  In Pueblo, Colorado, during January, snow falls for 5.3 days and regularly aggregates up to 2.01" (51mm) of snow. In Pueblo, in January, during 5.3 snowfall days, 2.01" (51mm) of snow is typically accumulated.
• Greeley - January »
  In Greeley in January, during 4.4 snowfall days, 1.57" (40mm) of snow is typically accumulated. The months with the highest humidity in Greeley are January and December, with an average relative humidity of 64%.
• Longmont - January »
  In Longmont, during January, the rain falls for 3.5 days and regularly aggregates up to 0.35" (9mm) of precipitation. The months with the lowest UV index in Longmont are January, February, November and December, with an average maximum UV index of 2.
• Grand Junction - January »
  The month with the least sunshine in Grand Junction is January, with an average of 6.3h of sunshine. In Grand Junction in January, it is raining for 7.3 days, with typically 0.67" (17mm) of accumulated precipitation.
• Broomfield - January »
  The month with the least rainfall in Broomfield is January, when the rain falls for 4.8 days and typically collects 0.16" (4mm) of precipitation. In Broomfield in January, snow falls for 5.8 days, with typically accumulated 1.1" (28mm) of snow.
• Castle Rock - January »
  The months with the least rainfall in Castle Rock are January and December Rain falls for 5.1 days and accumulates 0.55" (14mm) of rain. January, February, October through December, with an average maximum UV index of 2, are months with the lowest UV index in Castle Rock, Colorado.
• Commerce City - January »
  In Commerce City in January, snow falls for 3.2 days, with typically accumulated 0.71" (18mm) of snow. In January, in Commerce City, the rain falls for 2.3 days.