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United States weather

Weather in Gallatin County, Montana for December 2025

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

    Snow Forecast ❄️

  • Gallatin County typically experiences moderate snowfall in December, with an average of 8 snowy days.

    • Temperatures

  • In general, the average temperature in Gallatin County at the beginning of December is 6.4 °F. As the month progressed, temperatures tended to significantly cool down, reaching an average of 0.3 °F by the end of December.

    • More

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Average dry days
17
Dry days
Average rainy days
6
Rainy days
Average snowy days
8
Snow days
Average temperatures
3°/-4°
Temperatures
Average wind speed
11 km/h
Avg max wind
Average humidity
75 %
Avg humidity

Gallatin County Weather December

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

Temperatures trend during December in Gallatin County

See the weather trend as well as the moving average line

December weather in Gallatin County day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Overcast
Overcast
 4° /-3° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 7° /-2° 0 mm 0 cm
Dec. 3 Sunny
Sunny
 8° /0° 0 mm 0 cm
Dec. 4 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Dec. 5 Sunny
Sunny
 7° /-1° 0 mm 0 cm
Dec. 6 Sunny
Sunny
 6° /-1° 0 mm 0 cm
Dec. 7 Overcast
Overcast
 7° /0° 0 mm 0 cm
Dec. 8 Light freezing rain
Light freezing rain
 1° /-4° 3.3 mm 1.1 cm
Dec. 9 Patchy moderate snow
Patchy moderate snow
 -2° /-5° 2.3 mm 0.6 cm
Dec. 10 Cloudy
Cloudy
 0° /-6° 0 mm 0 cm
Dec. 11 Light freezing rain
Light freezing rain
 1° /-3° 1.3 mm 0 cm
Dec. 12 Partly cloudy
Partly cloudy
 2° /-6° 0 mm 0 cm
Dec. 13 Partly cloudy
Partly cloudy
 2° /-4° 0 mm 0 cm
Dec. 14 Overcast
Overcast
 4° /-3° 0.1 mm 0 cm
Dec. 15 Moderate or heavy snow showers
Moderate or heavy snow showers
 0° /-7° 6.6 mm 4.1 cm
Dec. 16 Patchy moderate snow
Patchy moderate snow
 0° /-8° 2.2 mm 1.2 cm
Dec. 17 Overcast
Overcast
 1° /-5° 0.2 mm 0 cm
Dec. 18 Moderate or heavy rain shower
Moderate or heavy rain shower
 6° /-2° 2.1 mm 0 cm
Dec. 19 Sunny
Sunny
 4° /-4° 0 mm 0 cm
Dec. 20 Partly cloudy
Partly cloudy
 6° /-3° 0 mm 0 cm
Dec. 21 Overcast
Overcast
 7° /-1° 0 mm 0 cm
Dec. 22 Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-2° 5.7 mm 3.6 cm
Dec. 23 Patchy rain possible
Patchy rain possible
 2° /-3° 0.1 mm 0 cm
Dec. 24 Overcast
Overcast
 6° /-3° 10.4 mm 0 cm
Dec. 25 Light freezing rain
Light freezing rain
 1° /-2° 0.5 mm 0 cm
Dec. 26 Light freezing rain
Light freezing rain
 1° /-3° 1.3 mm 0 cm
Dec. 27 Light freezing rain
Light freezing rain
 0° /-3° 0.4 mm 0 cm
Dec. 28 Moderate snow
Moderate snow
 2° /-2° 4.8 mm 2.1 cm
Dec. 29 Moderate or heavy snow showers
Moderate or heavy snow showers
 3° /-3° 6.2 mm 3.3 cm
Dec. 30 Patchy moderate snow
Patchy moderate snow
 -1° /-6° 6 mm 2.8 cm
Dec. 31 Overcast
Overcast
 -4° /-12° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Gallatin 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 Gallatin County forecast closer to your planned date for the most up-to-date weather information.
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Gallatin County in December - FAQ

What are the expected maximum and minimum temperatures in Gallatin County during December?
Brace for cold days with temperatures not exceeding 3° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Gallatin County during December?
Moderate rainfall is anticipated in Gallatin County during December, with a total of 53.6 mm spread over approximately 6 days. Considering plans for rainy days is advisable.
Will it snow in Gallatin County in December 2025?
Gallatin County experiences an average snowfall of 18.9 cm during December, occurring over 8 days.
What are the typical wind conditions in Gallatin County during December?
The average wind speed in Gallatin County during December is 11 km/h, suggesting breezy to windy conditions, depending on your activities.

Gallatin County snow forecast December 2025

Track daily snowfall levels and discover Gallatin County’s snowy potential this December ❄️

December rainfall patterns in Gallatin County

Explore the daily rainfall trends and prepare for Gallatin Countys December weather 💧
Top locations in Gallatin County
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Bozeman
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Location coordinates Where is Gallatin County?

Get accurate weather forecasts for Gallatin County, located at latitude 45.68 and longitude -111.039. Stay updated with localized weather information tailored for Gallatin County.

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