January weather forecast
Montana, USA

January is the coldest month of the year in Montana, characterized by freezing temperatures and heavy snowfall. The climate varies across the state, with the eastern part experiencing more severe conditions due to the semi-arid, continental climate. The record low temperature for Montana, and the entire United States, was set in Rogers Pass at -70°F (-56.7°C) on January 20, 1954.

The average minimum temperature in January is 0°F (-17.8°C), and maximum temperatures usually do not exceed 30°F (-1.1°C). However, Chinook winds from the southwest can occasionally elevate temperatures in areas east of the mountains, even reaching the range of 50°F (10°C) to 60°F (15.6°C).

Comparatively, January is significantly colder than the adjacent months of December and February. The transition from December to January marks a noticeable drop in temperature, and the intense cold often continues into early February. Snowfall is substantial during January, particularly in mountainous regions, where it contributes to the yearly accumulation of up to 300" (7620mm). The towns in the prairie commonly register snowfall from 30" (762mm) to 50" (1270mm).

Weather variations between western and eastern Montana are pronounced in January, with the western part benefiting from the northern Pacific coastal climate, resulting in milder winters. In contrast, the eastern region's continental influence leads to more biting cold. Therefore, weather conditions can vary significantly within the state during this month, and the weather's distinct contrast underscores Montana's diverse climatic regions.

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• Billings - January »
  In Billings in January, during 12.7 snowfall days, 5.35" (136mm) of snow is typically accumulated. In Billings, in January, during 12.7 snowfall days, 5.35" (136mm) of snow is typically accumulated.
• Missoula - January »
  In Missoula during January, snow falls for 8.8 days and regularly aggregates up to 1.3" (33mm) of snow. The most humid month in Missoula is January, with an average relative humidity of 90%.
• Great Falls - January »
  The months with the least sunshine in Great Falls are January, February and December, with an average of 5.5h of sunshine. In Great Falls in January, snow falls for 7.1 days, with typically accumulated 1.46" (37mm) of snow.
• Bozeman - January »
  In Bozeman during January, the rain falls for 4.4 days and regularly aggregates up to 1.46" (37mm) of precipitation. In Bozeman, in January, snow falls for 19 days, with typically accumulated 11.97" (304mm) of snow.
• Butte - January »
  January, February and December, with an average relative humidity of 87%, are most humid months in Butte, Montana. The months with the highest humidity in Butte are January, February and December, with an average relative humidity of 87%.
• Helena - January »
  The months with the least rainfall in Helena are January and December Rain falls for 8.4 days and accumulates 0.63" (16mm) of rain. January and December are months with the least rain in Helena when the rain falls for 8.4 days and typically aggregates up to 0.63" (16mm) of rain.
• Kalispell - January »
  In Kalispell, in January, snow falls for 20.6 days, with typically accumulated 11.3" (287mm) of snow. As December transitions into January, Kalispell records an average high-temperature of a still subzero cold 27.3°F (-2.6°C), showing a gentle shift from the preceding month.
• Havre - January »
  In Havre in January, during 7.7 snowfall days, 8.58" (218mm) of snow is typically accumulated. January, February, November and December, with an average maximum UV index of 1, are months with the lowest UV index in Havre, Montana.
• Anaconda - January »
  The months with the least rainfall in Anaconda are January and December Rain falls for 8.3 days and accumulates 0.94" (24mm) of rain. In Anaconda, Montana, during January, snow falls for 17.1 days and regularly aggregates up to 6.97" (177mm) of snow.
• Miles City - January »
  With an average relative humidity of 83%, January is the most humid month in Miles City, Montana. January is the most humid month in Miles City with an average relative humidity of 83%.
• Belgrade - January »
  The month with the least rainfall in Belgrade is January, when the rain falls for 5.4 days and typically collects 0.79" (20mm) of precipitation. In Belgrade, in January, during 16.5 snowfall days, 6.18" (157mm) of snow is typically accumulated.
• Livingston - January »
  January is Livingston's coldest month, registering average high temperatures of 35.1°F (1.7°C) and lows of 16°F (-8.9°C). On the last day of January, in Livingston, Montana, sunrise is at 7:44 am and sunset at 5:26 pm MST.