|
Typical Boise December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 38.8 °F | |
| Average daily low | 25.1 °F | |
| Average monthly precipitation | 1.5 inches | |
| Average monthly snow | 5.5 inches | |
| Daily chance of precipitation | 38.8% | |
| Daily chance of snow | 18.0% | |
|
Boise December Weather Records 1911–2024 |
||
|---|---|---|
| Highest temperature | 69 °F | December 10, 1939 |
| Lowest temperature | -30 °F | December 25, 1924 |
| Highest daily low | 55 °F | December 14, 1929 |
| Lowest daily high | -6 °F | December 22, 1990 |
| Hottest average high temperature | 49.6 °F | 1929 |
| Coldest average high temperature | 21.4 °F | 1985 |
| Most daily precipitation | 1.0 inches | December 23, 1955 |
| Most monthly precipitation | 4.2 inches | 1983 |
| Most daily snow | 10.0 inches | December 22, 1913 |
| Most monthly snow | 26.2 inches | 1983 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 42.5 | 27.7 | 60 | 9 |
| December 2 | 42.2 | 27.4 | 62 | 0 |
| December 3 | 41.8 | 27.2 | 61 | 3 |
| December 4 | 41.5 | 26.9 | 60 | 4 |
| December 5 | 41.1 | 26.6 | 61 | -6 |
| December 6 | 40.9 | 26.5 | 64 | 0 |
| December 7 | 40.6 | 26.4 | 61 | 0 |
| December 8 | 40.4 | 26.2 | 60 | -19 |
| December 9 | 40.2 | 26.0 | 57 | -21 |
| December 10 | 40.0 | 25.8 | 69 | -23 |
| December 11 | 39.7 | 25.6 | 66 | -22 |
| December 12 | 39.5 | 25.4 | 65 | -10 |
| December 13 | 39.3 | 25.4 | 68 | -14 |
| December 14 | 39.1 | 25.3 | 65 | -9 |
| December 15 | 39.0 | 25.2 | 68 | -10 |
| December 16 | 38.7 | 25.0 | 64 | -9 |
| December 17 | 38.5 | 24.9 | 62 | -8 |
| December 18 | 38.3 | 24.8 | 58 | -7 |
| December 19 | 38.2 | 24.7 | 57 | -9 |
| December 20 | 38.1 | 24.6 | 57 | -8 |
| December 21 | 38.0 | 24.5 | 60 | -23 |
| December 22 | 37.9 | 24.3 | 65 | -25 |
| December 23 | 37.8 | 24.2 | 56 | -18 |
| December 24 | 37.8 | 24.2 | 55 | -24 |
| December 25 | 37.8 | 24.2 | 57 | -30 |
| December 26 | 37.8 | 24.2 | 57 | -27 |
| December 27 | 37.8 | 24.2 | 60 | -7 |
| December 28 | 37.8 | 24.2 | 59 | -9 |
| December 29 | 37.8 | 24.1 | 65 | -17 |
| December 30 | 37.8 | 24.1 | 56 | -9 |
| December 31 | 37.8 | 24.1 | 58 | -9 |