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Flathead County (Glacier National Park)
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United States weather

Weather in Flathead County, Montana for December 2025

Your guide to Flathead County weather in December - trends and predictions

    Snow Forecast ❄️

  • Flathead County typically experiences moderate snowfall in December, with an average of 9 snowy days.
    According to Flathead County snow forecast for December 2025, 13 snowy days are expected in the next 2 weeks. The closest date with snow is Friday, December 5.

    • Temperatures

  • Expect cooler weather in the next days in Flathead County with the forecast suggesting a temperature of -6.1 °F, lower than the historical average.

  • In general, the average temperature in Flathead County 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.

    • More

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Average dry days
19
Dry days
Average rainy days
3
Rainy days
Average snowy days
9
Snow days
Average temperatures
0°/-4°
Temperatures
Average wind speed
7 km/h
Avg max wind
Average humidity
91 %
Avg humidity

Flathead County Weather December

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

Temperatures trend during December in Flathead County

See the weather trend as well as the moving average line

December weather in Flathead County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 -2° /-10° 2 mm 0.8 cm
Dec. 2 Overcast
Overcast
 -1° /-6° 0 mm 0 cm
Dec. 3 Overcast
Overcast
 -1° /-6° 0 mm 0 cm
Dec. 4 Light freezing rain
Light freezing rain
 0° /-4° 0.5 mm 0 cm
Dec. 5 Moderate or heavy snow showers
Moderate or heavy snow showers
 -2° /-4° 26.1 mm 9.9 cm
Dec. 6 Moderate snow
Moderate snow
 1° /-9° 17.2 mm 10.9 cm
Dec. 7 Heavy snow
Heavy snow
 1° /-7° 16.2 mm 11.7 cm
Dec. 8 Light sleet
Light sleet
 0° /-3° 5.2 mm 1.6 cm
Dec. 9 Mist
Mist
 1° /-10° 6.3 mm 0.2 cm
Dec. 10 Heavy snow
Heavy snow
 1° /-3° 9.1 mm 6.5 cm
Dec. 11 Heavy snow
Heavy snow
 -1° /-14° 3.5 mm 2.6 cm
Dec. 12 Light snow
Light snow
 -18° /-22° 1.7 mm 1.2 cm
Dec. 13 Light snow
Light snow
 -16° /-25° 0.9 mm 0.6 cm
Dec. 14 Moderate snow
Moderate snow
 -10° /-22° 0.9 mm 0.6 cm
Dec. 15 Moderate snow
Moderate snow
 -9° /-22° 1.8 mm 1.3 cm
Dec. 16 Heavy snow
Heavy snow
 -7° /-25° 4 mm 2.9 cm
Dec. 17 Heavy snow
Heavy snow
 -26° /-29° 8.4 mm 6 cm
Dec. 18 Patchy moderate snow
Patchy moderate snow
 3° /0° 7.8 mm 3 cm
Dec. 19 Overcast
Overcast
 0° /-3° 0 mm 0 cm
Dec. 20 Overcast
Overcast
 2° /-3° 0.1 mm 0 cm
Dec. 21 Patchy rain possible
Patchy rain possible
 1° /-3° 1.1 mm 0 cm
Dec. 22 Overcast
Overcast
 3° /0° 0.6 mm 0 cm
Dec. 23 Patchy moderate snow
Patchy moderate snow
 3° /-2° 1.4 mm 0.5 cm
Dec. 24 Patchy rain possible
Patchy rain possible
 2° /-1° 0.1 mm 0 cm
Dec. 25 Overcast
Overcast
 0° /-2° 0.3 mm 0 cm
Dec. 26 Light freezing rain
Light freezing rain
 1° /-3° 2.9 mm 0.4 cm
Dec. 27 Light freezing rain
Light freezing rain
 1° /-1° 0.9 mm 0 cm
Dec. 28 Moderate or heavy rain shower
Moderate or heavy rain shower
 1° /-1° 14.2 mm 0.4 cm
Dec. 29 Patchy moderate snow
Patchy moderate snow
 1° /-1° 10.4 mm 6.4 cm
Dec. 30 Moderate snow
Moderate snow
 0° /-4° 2.9 mm 1.7 cm
Dec. 31 Mist
Mist
 -1° /-5° 1.9 mm 1.4 cm
Next
Important Notice
Our weather forecast for Flathead County 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 Flathead County forecast closer to your planned date for the most up-to-date weather information.
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Flathead County in December - FAQ

What are the expected maximum and minimum temperatures in Flathead County 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 Flathead County during December?
Moderate rainfall is anticipated in Flathead County 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 Flathead County in December 2025?
Flathead County experiences an average snowfall of 14.67 cm during December, occurring over 9 days.
What are the typical wind conditions in Flathead County during December?
The average wind speed in Flathead County during December is 7 km/h, suggesting breezy to windy conditions, depending on your activities.

Flathead County snow forecast December 2025

Track daily snowfall levels and discover Flathead County’s snowy potential this December ❄️
On average, Flathead County sees 9 snowy days during December, with approximately 14.7 cm of total snowfall.

December rainfall patterns in Flathead County

Explore the daily rainfall trends and prepare for Flathead Countys December weather 💧
Typically, Flathead County has 3 rainy days in December with a total of 52.9 mm of rainfall.
Top locations in Flathead County
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Glacier National Park
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Location coordinates Where is Flathead County?

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

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