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United States weather

Weather in Glacier National Park, Montana for December 2026

Your guide to Glacier National Park weather in December - trends and predictions

    Snow Forecast ❄️

  • Glacier National Park typically experiences moderate snowfall in December, with an average of 10 snowy days.

    • More

  • Is December a good time to visit Glacier National Park? check out the best time to travel to Glacier National Park page.

  • ✨ Is December a good time to visit Glacier National Park? – Ask the AI Weatherman

Average dry days
18
Dry days
Average rainy days
3
Rainy days
Average snowy days
10
Snow days
Average temperatures
1°/-3°
Temperatures
Average wind speed
10 km/h
Avg max wind
Average humidity
90 %
Avg humidity

Glacier National Park Weather December

Move between months or click on a day
November
January
Sun.Mon.Tue.Wed.Thu.Fri.Sat.
1
Light snow
-2°
2
Overcast
-1°
3
Overcast
-2°
4
Light snow
0°
5
Light snow
-1°
6
Overcast
0°
7
Patchy rain possible
2°
8
Light freezing rain
3°
9
Light freezing rain
2°
10
Moderate snow
2°
11
Light rain
3°
12
Cloudy
1°
13
Overcast
2°
14
Light freezing rain
2°
15
Patchy moderate snow
3°
16
Light freezing rain
2°
17
Light snow
3°
18
Patchy moderate snow
2°
19
Light snow
2°
20
Overcast
1°
21
Patchy rain possible
1°
22
Overcast
2°
23
Patchy moderate snow
2°
24
Light rain
2°
25
Overcast
1°
26
Light freezing rain
1°
27
Light freezing rain
0°
28
Moderate or heavy rain shower
-3°
29
Light snow
0°
30
Light snow
-1°
31
Mist
-2°

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

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Light snow
Light snow
 -2° /-10° 2 mm 0.8 cm
Dec. 2 Overcast
Overcast
 -1° /-6° 0 mm 0 cm
Dec. 3 Overcast
Overcast
 -2° /-6° 0 mm 0 cm
Dec. 4 Light snow
Light snow
 0° /-5° 4.1 mm 1.7 cm
Dec. 5 Light snow
Light snow
 -1° /-5° 6.3 mm 4.6 cm
Dec. 6 Overcast
Overcast
 0° /-3° 0 mm 0 cm
Dec. 7 Patchy rain possible
Patchy rain possible
 2° /-2° 1.5 mm 0 cm
Dec. 8 Light freezing rain
Light freezing rain
 3° /-2° 9 mm 5.1 cm
Dec. 9 Light freezing rain
Light freezing rain
 2° /-2° 3.4 mm 0 cm
Dec. 10 Moderate snow
Moderate snow
 2° /-2° 16.5 mm 8.5 cm
Dec. 11 Light rain
Light rain
 3° /-3° 3.3 mm 0 cm
Dec. 12 Cloudy
Cloudy
 1° /-5° 0 mm 0 cm
Dec. 13 Overcast
Overcast
 2° /-2° 0 mm 0 cm
Dec. 14 Light freezing rain
Light freezing rain
 2° /-4° 0.2 mm 0 cm
Dec. 15 Patchy moderate snow
Patchy moderate snow
 3° /-2° 0.6 mm 0.3 cm
Dec. 16 Light freezing rain
Light freezing rain
 2° /-3° 0.6 mm 0 cm
Dec. 17 Light snow
Light snow
 3° /-2° 15.9 mm 3.2 cm
Dec. 18 Patchy moderate snow
Patchy moderate snow
 2° /-1° 9.2 mm 5.4 cm
Dec. 19 Light snow
Light snow
 2° /-3° 4.5 mm 2.1 cm
Dec. 20 Overcast
Overcast
 1° /-3° 0.1 mm 0 cm
Dec. 21 Patchy rain possible
Patchy rain possible
 1° /-4° 0.6 mm 0 cm
Dec. 22 Overcast
Overcast
 2° /-1° 0.3 mm 0 cm
Dec. 23 Patchy moderate snow
Patchy moderate snow
 2° /-2° 0.7 mm 0.3 cm
Dec. 24 Light rain
Light rain
 2° /-2° 6.5 mm 4.6 cm
Dec. 25 Overcast
Overcast
 1° /-1° 0.2 mm 0 cm
Dec. 26 Light freezing rain
Light freezing rain
 1° /-2° 15.6 mm 7.9 cm
Dec. 27 Light freezing rain
Light freezing rain
 0° /-5° 2.6 mm 1.6 cm
Dec. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 -3° /-7° 7.1 mm 0.2 cm
Dec. 29 Light snow
Light snow
 0° /-3° 5.2 mm 3.2 cm
Dec. 30 Light snow
Light snow
 -1° /-6° 1.5 mm 0.8 cm
Dec. 31 Mist
Mist
 -2° /-7° 0.9 mm 0.7 cm
Next
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.
Change Month
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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 1° 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?
Significant rainfall exceeding 118.1 mm is expected in Glacier National Park during December, occurring over more than 3 days. Preparing for wet conditions is recommended in your planning.

Will it snow in Glacier National Park in December 2026?
Glacier National Park experiences an average snowfall of 50.9 cm during December, occurring over 10 days.

What are the typical wind conditions in Glacier National Park during December?
The average wind speed in Glacier National Park during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.

Glacier National Park snow forecast December 2026

Track daily snowfall levels and discover Glacier National Park’s snowy potential this December ❄️
On average, Glacier National Park sees 10 snowy days during December, with approximately 50.9 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 118.1 mm of rainfall.
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Location coordinates Where is Glacier National Park?

Get accurate weather forecasts for Glacier National Park, located at latitude 48.683 and longitude -113.8. Stay updated with localized weather information tailored for Glacier National Park.

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