Boise
December
Weather in Boise for December 2025
Your guide to Boise weather in December - trends and predictions
Boise typically experiences moderate snowfall in December, with an average of 9 snowy days.
In general, the average temperature in Boise 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
Boise in December average weather
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| Mon. | Tue. | Wed. | Thu. | Fri. | Sat. | Sun. |
|---|---|---|---|---|---|---|
| 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 Boise
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 Boise 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 Boise forecast closer to your planned date for the most up-to-date weather information.
Boise in December - FAQ
What are the expected maximum and minimum temperatures in Boise 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 Boise during December?
Moderate rainfall is anticipated in Boise 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 Boise in December 2025?
Boise experiences an average snowfall of 22.5 cm during December, occurring over 9 days.
What are the typical wind conditions in Boise during December?
The average wind speed in Boise during December is 10 km/h, suggesting breezy to windy conditions, depending on your activities.
Boise snow forecast December 2025
Track daily snowfall levels and discover Boise’s snowy potential this December ❄️
December rainfall patterns in Boise
Explore the daily rainfall trends and prepare for Boises December weather 💧
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