|
Typical Casper December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 35.1 °F | |
| Average daily low | 15.1 °F | |
| Average monthly precipitation | 0.6 inches | |
| Average monthly snow | 11.0 inches | |
| Daily chance of precipitation | 22.6% | |
| Daily chance of snow | 24.6% | |
|
Casper December Weather Records 1900–2024 |
||
|---|---|---|
| Highest temperature | 67 °F | December 4, 1911 |
| Lowest temperature | -42 °F | December 22, 2022 |
| Highest daily low | 49 °F | December 12, 1921 |
| Lowest daily high | -20 °F | December 20, 1990 |
| Hottest average high temperature | 49.6 °F | 1933 |
| Coldest average high temperature | 22.1 °F | 1983 |
| Most daily precipitation | 1.3 inches | December 24, 1982 |
| Most monthly precipitation | 3.7 inches | 1982 |
| Most daily snow | 24.3 inches | December 24, 1982 |
| Most monthly snow | 62.8 inches | 1982 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 39.7 | 18.3 | 63 | -23 |
| December 2 | 39.2 | 18.0 | 66 | -15 |
| December 3 | 38.8 | 17.6 | 60 | -6 |
| December 4 | 38.3 | 17.3 | 67 | -22 |
| December 5 | 37.9 | 17.0 | 60 | -27 |
| December 6 | 37.6 | 16.8 | 57 | -24 |
| December 7 | 37.2 | 16.6 | 65 | -27 |
| December 8 | 37.0 | 16.4 | 59 | -33 |
| December 9 | 36.6 | 16.1 | 60 | -23 |
| December 10 | 36.3 | 15.9 | 65 | -18 |
| December 11 | 36.1 | 15.8 | 63 | -19 |
| December 12 | 35.8 | 15.6 | 60 | -14 |
| December 13 | 35.6 | 15.5 | 58 | -20 |
| December 14 | 35.5 | 15.5 | 57 | -29 |
| December 15 | 35.3 | 15.3 | 60 | -20 |
| December 16 | 35.0 | 15.1 | 59 | -31 |
| December 17 | 34.8 | 14.8 | 60 | -31 |
| December 18 | 34.6 | 14.7 | 62 | -32 |
| December 19 | 34.5 | 14.6 | 57 | -27 |
| December 20 | 34.5 | 14.7 | 57 | -36 |
| December 21 | 34.4 | 14.6 | 53 | -41 |
| December 22 | 34.2 | 14.5 | 52 | -42 |
| December 23 | 34.2 | 14.3 | 58 | -39 |
| December 24 | 34.2 | 14.4 | 54 | -33 |
| December 25 | 34.2 | 14.5 | 59 | -15 |
| December 26 | 34.2 | 14.4 | 53 | -17 |
| December 27 | 34.1 | 14.3 | 61 | -22 |
| December 28 | 33.9 | 14.3 | 59 | -26 |
| December 29 | 33.8 | 14.1 | 57 | -25 |
| December 30 | 33.7 | 14.0 | 56 | -29 |
| December 31 | 33.8 | 14.2 | 54 | -35 |