|
Typical Great Falls December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 35.6 °F | |
| Average daily low | 16.8 °F | |
| Average monthly precipitation | 0.5 inches | |
| Average monthly snow | 9.2 inches | |
| Daily chance of precipitation | 21.0% | |
| Daily chance of snow | 23.0% | |
|
Great Falls December Weather Records 1892–2024 |
||
|---|---|---|
| Highest temperature | 69 °F | December 1, 2021 |
| Lowest temperature | -43 °F | December 29, 1968 |
| Highest daily low | 53 °F | December 16, 1980 |
| Lowest daily high | -26 °F | December 29, 1968 |
| Hottest average high temperature | 47.8 °F | 2023 |
| Coldest average high temperature | 14.6 °F | 1983 |
| Most daily precipitation | 0.8 inches | December 14, 2015 |
| Most monthly precipitation | 2.5 inches | 1917 |
| Most daily snow | 14.0 inches | December 12, 1932 |
| Most monthly snow | 30.5 inches | 2008 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 38.7 | 19.9 | 69 | -29 |
| December 2 | 38.5 | 19.7 | 60 | -28 |
| December 3 | 38.3 | 19.5 | 61 | -19 |
| December 4 | 38.1 | 19.2 | 62 | -23 |
| December 5 | 37.9 | 19.1 | 69 | -26 |
| December 6 | 37.7 | 19.1 | 64 | -28 |
| December 7 | 37.5 | 18.8 | 60 | -33 |
| December 8 | 37.2 | 18.5 | 63 | -36 |
| December 9 | 36.9 | 18.1 | 62 | -38 |
| December 10 | 36.8 | 18.0 | 67 | -22 |
| December 11 | 36.7 | 17.8 | 60 | -26 |
| December 12 | 36.5 | 17.6 | 63 | -32 |
| December 13 | 36.3 | 17.5 | 59 | -29 |
| December 14 | 36.2 | 17.4 | 60 | -25 |
| December 15 | 35.9 | 17.2 | 61 | -28 |
| December 16 | 35.7 | 16.7 | 63 | -36 |
| December 17 | 35.4 | 16.5 | 59 | -27 |
| December 18 | 35.2 | 16.3 | 58 | -27 |
| December 19 | 35.2 | 16.2 | 59 | -25 |
| December 20 | 35.1 | 16.1 | 57 | -28 |
| December 21 | 35.0 | 16.0 | 65 | -35 |
| December 22 | 34.8 | 15.9 | 57 | -32 |
| December 23 | 34.7 | 15.8 | 56 | -30 |
| December 24 | 34.6 | 15.8 | 58 | -42 |
| December 25 | 34.5 | 15.5 | 59 | -29 |
| December 26 | 34.3 | 15.3 | 60 | -36 |
| December 27 | 34.1 | 15.1 | 63 | -37 |
| December 28 | 33.8 | 14.9 | 58 | -35 |
| December 29 | 33.8 | 14.7 | 60 | -43 |
| December 30 | 33.7 | 14.6 | 63 | -30 |
| December 31 | 33.5 | 14.5 | 59 | -33 |