Glacier National Park (MT)
December
Weather in Glacier National Park, Montana for December 2025
Your guide to Glacier National Park weather in December - trends and predictions
Glacier National Park typically experiences moderate snowfall in December, with an average of 9 snowy days.
According to Glacier National Park snow forecast for December 2025, 13 snowy days are expected in the next 2 weeks. The closest date with snow is Friday, December 5.Expect cooler weather in the next days in Glacier National Park with the forecast suggesting a temperature of -6.1 °F, lower than the historical average.
In general, the average temperature in Glacier National Park at the beginning of December is -0.6 °F. As the month progressed, temperatures tended to moderately rise, reaching an average of 0.4 °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
Glacier National Park Weather December
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Temperatures trend during December in Glacier National Park
See the weather trend as well as the moving average line
December weather in Glacier National Park 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 |  Light freezing rain | 0° /-4° | 0.5 mm | 0 cm | |
| Dec. 5 |  Moderate or heavy snow showers | -2° /-4° | 26.1 mm | 9.9 cm | |
| Dec. 6 |  Moderate snow | 1° /-9° | 17.2 mm | 10.9 cm | |
| Dec. 7 |  Heavy snow | 1° /-7° | 16.2 mm | 11.7 cm | |
| Dec. 8 |  Light sleet | 0° /-3° | 5.2 mm | 1.6 cm | |
| Dec. 9 |  Mist | 1° /-10° | 6.3 mm | 0.2 cm | |
| Dec. 10 | Heavy snow | 1° /-3° | 9.1 mm | 6.5 cm | |
| Dec. 11 | Heavy snow | -1° /-14° | 3.5 mm | 2.6 cm | |
| Dec. 12 |  Light snow | -18° /-22° | 1.7 mm | 1.2 cm | |
| Dec. 13 | Light snow | -16° /-25° | 0.9 mm | 0.6 cm | |
| Dec. 14 | Moderate snow | -10° /-22° | 0.9 mm | 0.6 cm | |
| Dec. 15 | Moderate snow | -9° /-22° | 1.8 mm | 1.3 cm | |
| Dec. 16 | Heavy snow | -7° /-25° | 4 mm | 2.9 cm | |
| Dec. 17 | Heavy snow | -26° /-29° | 8.4 mm | 6 cm | |
| Dec. 18 |  Patchy moderate snow | 3° /0° | 7.8 mm | 3 cm | |
| Dec. 19 | Overcast | 0° /-3° | 0 mm | 0 cm | |
| Dec. 20 | Overcast | 2° /-3° | 0.1 mm | 0 cm | |
| Dec. 21 |  Patchy rain possible | 1° /-3° | 1.1 mm | 0 cm | |
| Dec. 22 | Overcast | 3° /0° | 0.6 mm | 0 cm | |
| Dec. 23 | Patchy moderate snow | 3° /-2° | 1.4 mm | 0.5 cm | |
| Dec. 24 | Patchy rain possible | 2° /-1° | 0.1 mm | 0 cm | |
| Dec. 25 | Overcast | 0° /-2° | 0.3 mm | 0 cm | |
| Dec. 26 | Light freezing rain | 1° /-3° | 2.9 mm | 0.4 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 Glacier National Park 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 Glacier National Park forecast closer to your planned date for the most up-to-date weather information.
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Glacier National Park in December - FAQ
What are the expected maximum and minimum temperatures in Glacier National Park 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 Glacier National Park during December?
Moderate rainfall is anticipated in Glacier National Park 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 Glacier National Park in December 2025?
Glacier National Park experiences an average snowfall of 14.67 cm during December, occurring over 9 days.
What are the typical wind conditions in Glacier National Park during December?
The average wind speed in Glacier National Park during December is 7 km/h, suggesting breezy to windy conditions, depending on your activities.
Glacier National Park snow forecast December 2025
Track daily snowfall levels and discover Glacier National Park’s snowy potential this December ❄️
On average, Glacier National Park sees 9 snowy days during December, with approximately 14.7 cm of total snowfall.
December rainfall patterns in Glacier National Park
Explore the daily rainfall trends and prepare for Glacier National Parks December weather 💧
Typically, Glacier National Park has 3 rainy days in December with a total of 52.9 mm of rainfall.
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