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.

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• 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. 
 The introduction of January in Denver notes a subtle temperature variation to a still cold 40.5°F (4.7°C) from 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, in January, during 8.5 snowfall days, 5.67" (144mm) of snow is typically accumulated.
• Aurora - January »
  The months with the lowest UV index in Aurora are January, February, November and December, with an average maximum UV index of 2. January and February, with an average relative humidity of 64%, are most humid months 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 during January, snow falls for 2.8 days and regularly aggregates up to 0.91" (23mm) of snow.
• Boulder - January »
  In Boulder, during January, snow falls for 6.3 days and regularly aggregates up to 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, in January, during 5.3 snowfall days, 2.01" (51mm) of snow is typically accumulated. In Pueblo, in January, during 5.3 snowfall days, 2.01" (51mm) of snow is typically accumulated.
• Greeley - January »
  In Greeley during January, snow falls for 4.4 days and regularly aggregates up to 1.57" (40mm) of snow. On the first day of January in Greeley sunrise is at 7:21 am and sunset at 4:42 pm.
• Longmont - January »
  In Longmont, in January, snow falls for 5.8 days, with typically accumulated 2.64" (67mm) of snow. In Longmont, during January, snow falls for 5.8 days and regularly aggregates up to 2.64" (67mm) of snow.
• Grand Junction - January »
  The most humid month in Grand Junction is January, with an average relative humidity of 78%. With an average relative humidity of 78%, January is the most humid month in Grand Junction, Colorado.
• Broomfield - January »
  January, February, November and December, with an average maximum UV index of 2, are months with the lowest UV index in Broomfield, Colorado. 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, Colorado, are January and December Rain falls for 5.1 days and accumulates 0.55" (14mm) of rain. In Castle Rock, in January, snow falls for 7.6 days, with typically accumulated 4.02" (102mm) of snow.
• Commerce City - January »
  January and December are months with the least rain in Commerce City when the rain falls for 2.3 days and typically aggregates up to 0.08" (2mm) of rain. In Commerce City, Colorado, in January, snow falls for 3.2 days, with typically accumulated 0.71" (18mm) of snow.