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Weather in Helena, Montana for December 2025

Your guide to Helena weather in December - trends and predictions

    Snow Forecast ❄️

  • With an average of 2 snowy days, Helena usually enjoys a light touch of snow in December.
    According to Helena snow forecast for December 2025, 10 snowy days are expected in the next 2 weeks. The closest date with snow is Thursday, December 4.

    • Temperatures

  • Expect cooler weather in the next days in Helena with the forecast suggesting a temperature of -4.1 °F, lower than the historical average.

  • In general, the average temperature in Helena at the beginning of December is 2.4 °F. As the month progressed, temperatures tended to slightly decrease, reaching an average of 2.1 °F by the end of December.

    • Rain 🌧️

  • Helena experiences moderate rainfall in December, with an average of 7 rainy days and a total precipitation of 14.3 mm.

    • More

  • New! Chat with our AI weatherman - it’s amazing and free.

Average dry days
22
Dry days
Average rainy days
7
Rainy days
Average snowy days
2
Snow days
Average temperatures
4°/-4°
Temperatures
Average wind speed
13 km/h
Avg max wind
Average humidity
71 %
Avg humidity

Helena Weather December

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

Temperatures trend during December in Helena

See the weather trend as well as the moving average line

December weather in Helena day by day

Click on a date for more information
November January
Date Weather Temperatures Rain Snow More
Dec. 1 Cloudy
Cloudy
 1° /-8° 0 mm 0 cm
Dec. 2 Sunny
Sunny
 3° /-5° 0 mm 0 cm
Dec. 3 Partly cloudy
Partly cloudy
 4° /-7° 0 mm 0 cm
Dec. 4 Moderate or heavy snow showers
Moderate or heavy snow showers
 5° /-3° 2.7 mm 1.9 cm
Dec. 5 Moderate or heavy snow showers
Moderate or heavy snow showers
 2° /-6° 3.7 mm 2.7 cm
Dec. 6 Overcast
Overcast
 4° /-4° 0 mm 0 cm
Dec. 7 Partly cloudy
Partly cloudy
 -2° /-11° 0 mm 0 cm
Dec. 8 Patchy moderate snow
Patchy moderate snow
 1° /-3° 0.9 mm 0.6 cm
Dec. 9 Partly cloudy
Partly cloudy
 5° /0° 0.1 mm 0 cm
Dec. 10 Patchy rain possible
Patchy rain possible
 5° /-2° 1.2 mm 0.9 cm
Dec. 11 Light freezing rain
Light freezing rain
 2° /-6° 0.4 mm 0.3 cm
Dec. 12 Moderate snow
Moderate snow
 -12° /-19° 2.7 mm 1.9 cm
Dec. 13 Light snow
Light snow
 -16° /-24° 1 mm 0.7 cm
Dec. 14 Mist
Mist
 -14° /-22° 0 mm 0 cm
Dec. 15 Light freezing rain
Light freezing rain
 -11° /-22° 0.3 mm 0.2 cm
Dec. 16 Light snow
Light snow
 -3° /-19° 1 mm 0.7 cm
Dec. 17 Moderate snow
Moderate snow
 -23° /-29° 2.8 mm 2 cm
Dec. 18 Patchy rain possible
Patchy rain possible
 7° /-1° 0.3 mm 0 cm
Dec. 19 Partly cloudy
Partly cloudy
 1° /-5° 0 mm 0 cm
Dec. 20 Overcast
Overcast
 5° /-3° 0 mm 0 cm
Dec. 21 Overcast
Overcast
 4° /-4° 0 mm 0 cm
Dec. 22 Partly cloudy
Partly cloudy
 5° /-1° 0.4 mm 0 cm
Dec. 23 Overcast
Overcast
 6° /-3° 0 mm 0 cm
Dec. 24 Overcast
Overcast
 4° /-4° 0 mm 0 cm
Dec. 25 Overcast
Overcast
 4° /-2° 0 mm 0 cm
Dec. 26 Light freezing rain
Light freezing rain
 3° /-2° 0.6 mm 0 cm
Dec. 27 Cloudy
Cloudy
 2° /-4° 0 mm 0 cm
Dec. 28 Light freezing rain
Light freezing rain
 4° /-2° 0.4 mm 0 cm
Dec. 29 Patchy moderate snow
Patchy moderate snow
 1° /-3° 2.7 mm 0.5 cm
Dec. 30 Light freezing rain
Light freezing rain
 1° /-7° 0.6 mm 0 cm
Dec. 31 Overcast
Overcast
 0° /-10° 0 mm 0 cm
Next
Important Notice
Our weather forecast for Helena 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 Helena forecast closer to your planned date for the most up-to-date weather information.
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Helena in December - FAQ

What are the expected maximum and minimum temperatures in Helena during December?
Brace for cold days with temperatures not exceeding 4° and nights that are likely to be freezing. Winter clothing is essential for comfort and safety.
How much rainfall should be expected in Helena during December?
Expect minimal rainfall in Helena during December, with a total of 14.3 mm over approximately 7 days. This minimal precipitation is unlikely to significantly impact plans.
Will it snow in Helena in December 2025?
Helena experiences an average snowfall of 4.9 cm during December, occurring over 2 days.
What are the typical wind conditions in Helena during December?
The average wind speed in Helena during December is 13 km/h, suggesting breezy to windy conditions, depending on your activities.

Helena snow forecast December 2025

Track daily snowfall levels and discover Helena’s snowy potential this December ❄️
On average, Helena sees 2 snowy days during December, with approximately 4.9 cm of total snowfall.

December rainfall patterns in Helena

Explore the daily rainfall trends and prepare for Helenas December weather 💧
Typically, Helena has 7 rainy days in December with a total of 14.3 mm of rainfall.

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Location coordinates Where is Helena?

Get accurate weather forecasts for Helena, located at latitude 46.593 and longitude -112.036. Stay updated with localized weather information tailored for Helena.

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