Montana (Glacier National Park)
December
Weather in Montana for December 2025
Your guide to Montana weather in December - trends and predictions
Montana typically experiences moderate snowfall in December, with an average of 9 snowy days.
According to Montana snow forecast for December 2025, 11 snowy days are expected in the next 2 weeks. The closest date with snow is Tuesday, December 16.So far, December 2025 in Montana is slightly warmer than the historical average by 1 °F.
Expect cooler weather in the next days in Montana with the forecast suggesting a temperature of -3.4 °F, lower than the historical average.
In general, the average temperature in Montana at the beginning of December is -0.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of -3.7 °F by the end of December.
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Snow Forecast ❄️
Temperatures
More
19
Dry days
3
Rainy days
9
Snow days
0°/-4°
Temperatures
7 km/h
Avg max wind
91 %
Avg humidity
Montana Weather December
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What’s the Weather Like in Montana This December?
Discover the average temperatures and weather trends across Montana’s cities this December.
Temperatures trend during December in Montana
See the weather trend as well as the moving average line
December weather in Montana day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 |  Overcast | -2° /-10° | 2 mm | 0.8 cm | |
| Dec. 2 | Overcast | -1° /-6° | 0 mm | 0 cm | |
| Dec. 3 | Overcast | -1° /-6° | 0 mm | 0 cm | |
| Dec. 4 | Overcast | 0° /-5° | 4.1 mm | 1.7 cm | |
| Dec. 5 | Overcast | -1° /-5° | 6.3 mm | 4.6 cm | |
| Dec. 6 | Overcast | 0° /-3° | 0 mm | 0 cm | |
| Dec. 7 |  Moderate rain at times | 2° /-2° | 1.5 mm | 0 cm | |
| Dec. 8 |  Light freezing rain | 3° /-2° | 9 mm | 5.1 cm | |
| Dec. 9 | Light freezing rain | 2° /-2° | 3.4 mm | 0 cm | |
| Dec. 10 | Overcast | 2° /-2° | 16.5 mm | 8.5 cm | |
| Dec. 11 | Overcast | 3° /-3° | 3.3 mm | 0 cm | |
| Dec. 12 |  Cloudy | 0° /-8° | 0 mm | 0 cm | |
| Dec. 13 |  Patchy rain possible | 3° /-3° | 0.3 mm | 0 cm | |
| Dec. 14 |  Partly cloudy | 2° /-5° | 0 mm | 0 cm | |
| Dec. 15 |  Moderate or heavy snow showers | 2° /-2° | 25.2 mm | 0 cm | |
| Dec. 16 |  Light sleet | 3° /-5° | 17.2 mm | 1 cm | |
| Dec. 17 |  Patchy snow possible | -1° /-3° | 5.6 mm | 0.3 cm | |
| Dec. 18 |  Mist | 0° /-9° | 3.3 mm | 2.4 cm | |
| Dec. 19 |  Heavy snow | -1° /-12° | 3.6 mm | 2.6 cm | |
| Dec. 20 | Moderate or heavy snow showers | -3° /-11° | 6.1 mm | 4.4 cm | |
| Dec. 21 | Heavy snow | -2° /-11° | 3.8 mm | 2.8 cm | |
| Dec. 22 |  Moderate snow | -5° /-16° | 1.5 mm | 1.1 cm | |
| Dec. 23 |  Freezing fog | -5° /-20° | 0.1 mm | 0.1 cm | |
| Dec. 24 | Patchy moderate snow | -12° /-20° | 1.3 mm | 0.9 cm | |
| Dec. 25 | Heavy snow | -18° /-22° | 2.6 mm | 1.8 cm | |
| Dec. 26 | Mist | -10° /-26° | 0.2 mm | 0.1 cm | |
| Dec. 27 | Light freezing rain | 1° /-1° | 0.9 mm | 0 cm | |
| Dec. 28 | Moderate or heavy rain shower | 1° /-1° | 14.2 mm | 0.4 cm | |
| Dec. 29 | Patchy moderate snow | 1° /-1° | 10.4 mm | 6.4 cm | |
| Dec. 30 | Moderate snow | 0° /-4° | 2.9 mm | 1.7 cm | |
| Dec. 31 | Mist | -1° /-5° | 1.9 mm | 1.4 cm | |
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Important Notice
Our weather forecast for Montana in December is based on the analysis of historical data rather than real-time forecast models. While this provides a general overview, weather conditions can change. We recommend that you check the Montana forecast closer to your planned date for the most up-to-date weather information.
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Montana in December - FAQ
What are the expected maximum and minimum temperatures in Montana during December?
Brace for cold days with temperatures not exceeding 0° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Montana during December?
Moderate rainfall is anticipated in Montana during December, with a total of 52.9 mm spread over approximately 3 days. Considering plans for rainy days is advisable.
Will it snow in Montana in December 2025?
Montana experiences an average snowfall of 14.67 cm during December, occurring over 9 days.
What are the typical wind conditions in Montana during December?
The average wind speed in Montana during December is 7 km/h, suggesting breezy to windy conditions, depending on your activities.
Montana snow forecast December 2025
Track daily snowfall levels and discover Montana’s snowy potential this December ❄️
On average, Montana sees 9 snowy days during December, with approximately 14.7 cm of total snowfall.
December rainfall patterns in Montana
Explore the daily rainfall trends and prepare for Montanas December weather 💧
Typically, Montana has 3 rainy days in December with a total of 52.9 mm of rainfall.
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