December
Weather in Idaho for December 2025
Your guide to Idaho weather in December - trends and predictions
Idaho typically experiences moderate snowfall in December, with an average of 9 snowy days.
In general, the average temperature in Idaho at the beginning of December is 4.7 °F. As the month progressed, temperatures tended to noticeably cool down, reaching an average of 2.3 °F by the end of December.
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Snow Forecast ❄️
Temperatures
More
20
Dry days
2
Rainy days
9
Snow days
3°/-2°
Temperatures
10 km/h
Avg max wind
76 %
Avg humidity
Idaho in December average weather
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| Sun. | Mon. | Tue. | Wed. | Thu. | Fri. | Sat. |
|---|---|---|---|---|---|---|
| 1  5° | 2 5° | 3 5° | 4  6° | 5  3° | 6  3° | |
| 7 6° | 8  3° | 9  3° | 10  2° | 11 3° | 12  2° | 13  4° |
| 14  1° | 15 2° | 16  3° | 17 5° | 18 3° | 19 6° | 20  6° |
| 21 4° | 22 7° | 23 4° | 24 2° | 25 1° | 26 1° | 27 2° |
| 28 3° | 29 4° | 30 3° | 31 2° |
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Temperatures trend during December in Idaho
See the weather trend as well as the moving average line
December weather day by day
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| Date | Weather | Temperatures | Rain | Snow | More |
|---|---|---|---|---|---|
| Dec. 1 | Heavy snow | 5° /-2° | 3 mm | 2.6 cm | |
| Dec. 2 | Heavy snow | 5° /-2° | 15.4 mm | 10.4 cm | |
| Dec. 3 | Heavy snow | 5° /-1° | 33.5 mm | 3.9 cm | |
| Dec. 4 | Fog | 6° /-2° | 0 mm | 0 cm | |
| Dec. 5 | Freezing fog | 3° /-2° | 0 mm | 0 cm | |
| Dec. 6 | Light drizzle | 3° /-3° | 2.3 mm | 0 cm | |
| Dec. 7 | Light drizzle | 6° /-2° | 3.5 mm | 1.9 cm | |
| Dec. 8 | Light freezing rain | 3° /-2° | 1.2 mm | 1 cm | |
| Dec. 9 | Overcast | 3° /-4° | 0.1 mm | 0.1 cm | |
| Dec. 10 | Moderate snow | 2° /-5° | 1 mm | 0.2 cm | |
| Dec. 11 | Heavy snow | 3° /-1° | 5.1 mm | 0.2 cm | |
| Dec. 12 | Light snow | 2° /0° | 7 mm | 5.1 cm | |
| Dec. 13 | Sunny | 4° /-1° | 0 mm | 0 cm | |
| Dec. 14 | Patchy rain possible | 1° /-2° | 55 mm | 2.1 cm | |
| Dec. 15 | Sunny | 2° /-3° | 11.4 mm | 8.2 cm | |
| Dec. 16 | Partly cloudy | 3° /-2° | 11.2 mm | 7.7 cm | |
| Dec. 17 | Sunny | 5° /-1° | 16.8 mm | 9.7 cm | |
| Dec. 18 | Patchy rain possible | 3° /-1° | 0.1 mm | 0 cm | |
| Dec. 19 | Patchy light drizzle | 6° /-1° | 0.6 mm | 0 cm | |
| Dec. 20 | Cloudy | 6° /0° | 0 mm | 0 cm | |
| Dec. 21 | Partly cloudy | 4° /-2° | 0 mm | 0 cm | |
| Dec. 22 | Partly cloudy | 7° /-1° | 0.2 mm | 0 cm | |
| Dec. 23 | Sunny | 4° /-2° | 4.6 mm | 0 cm | |
| Dec. 24 | Overcast | 2° /-4° | 5.3 mm | 0 cm | |
| Dec. 25 | Overcast | 1° /-3° | 6.4 mm | 0 cm | |
| Dec. 26 | Heavy snow | 1° /-3° | 40.7 mm | 29.5 cm | |
| Dec. 27 | Partly cloudy | 2° /-3° | 13.3 mm | 5.1 cm | |
| Dec. 28 | Cloudy | 3° /-1° | 46.2 mm | 7.3 cm | |
| Dec. 29 | Partly cloudy | 4° /-1° | 22.1 mm | 0 cm | |
| Dec. 30 | Overcast | 3° /-1° | 0.9 mm | 0.7 cm | |
| Dec. 31 | Partly cloudy | 2° /-3° | 0 mm | 0 cm | |
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Important Notice
Our weather forecast for Idaho 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 Idaho forecast closer to your planned date for the most up-to-date weather information.
Idaho in December - FAQ
What are the expected maximum and minimum temperatures in Idaho 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 Idaho during December?
Moderate rainfall is anticipated in Idaho during December, with a total of 74.9 mm spread over approximately 2 days. Considering plans for rainy days is advisable.
Will it snow in Idaho in December 2025?
Idaho experiences an average snowfall of 22.5 cm during December, occurring over 9 days.
What are the typical wind conditions in Idaho during December?
The average wind speed in Idaho during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
Idaho snow forecast December 2025
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December rainfall patterns in Idaho
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