|
Typical Janesville December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 33.5 °F | |
| Average daily low | 18.1 °F | |
| Average monthly precipitation | 1.9 inches | |
| Average monthly snow | 9.9 inches | |
| Daily chance of precipitation | 31.2% | |
| Daily chance of snow | 16.5% | |
|
Janesville December Weather Records 1893–2024 |
||
|---|---|---|
| Highest temperature | 67 °F | December 16, 2021 |
| Lowest temperature | -25 °F | December 26, 2000 |
| Highest daily low | 56 °F | December 5, 2001 |
| Lowest daily high | -11 °F | December 21, 1989 |
| Hottest average high temperature | 42.7 °F | 2015 |
| Coldest average high temperature | 21.8 °F | 2000 |
| Most daily precipitation | 1.8 inches | December 15, 1971 |
| Most monthly precipitation | 4.9 inches | 2015 |
| Most daily snow | 12.5 inches | December 7, 1994 |
| Most monthly snow | 33.7 inches | 2008 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 38.9 | 22.8 | 65 | -12 |
| December 2 | 38.5 | 22.4 | 63 | -6 |
| December 3 | 38.1 | 22.1 | 65 | -3 |
| December 4 | 37.6 | 21.6 | 66 | -14 |
| December 5 | 37.2 | 21.1 | 64 | -2 |
| December 6 | 36.8 | 20.8 | 67 | -12 |
| December 7 | 36.4 | 20.5 | 59 | -11 |
| December 8 | 35.9 | 20.2 | 62 | -7 |
| December 9 | 35.5 | 19.9 | 62 | -12 |
| December 10 | 35.2 | 19.6 | 56 | -13 |
| December 11 | 34.8 | 19.2 | 59 | -11 |
| December 12 | 34.5 | 18.9 | 57 | -8 |
| December 13 | 34.2 | 18.7 | 59 | -12 |
| December 14 | 33.9 | 18.4 | 60 | -13 |
| December 15 | 33.6 | 18.1 | 54 | -12 |
| December 16 | 33.4 | 17.8 | 67 | -11 |
| December 17 | 33.2 | 17.6 | 55 | -15 |
| December 18 | 32.9 | 17.2 | 51 | -13 |
| December 19 | 32.6 | 16.8 | 52 | -18 |
| December 20 | 32.3 | 16.6 | 55 | -17 |
| December 21 | 32.2 | 16.4 | 57 | -17 |
| December 22 | 32.1 | 16.3 | 54 | -20 |
| December 23 | 31.9 | 16.0 | 53 | -20 |
| December 24 | 31.8 | 15.8 | 58 | -23 |
| December 25 | 31.6 | 15.6 | 58 | -25 |
| December 26 | 31.4 | 15.4 | 56 | -25 |
| December 27 | 31.4 | 15.2 | 51 | -25 |
| December 28 | 31.2 | 15.1 | 63 | -16 |
| December 29 | 31.1 | 15.0 | 63 | -14 |
| December 30 | 30.9 | 14.8 | 57 | -12 |
| December 31 | 30.6 | 14.5 | 57 | -15 |