|
Typical Riverside December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 67.7 °F | |
| Average daily low | 42.4 °F | |
| Average monthly precipitation | 1.5 inches | |
| Daily chance of precipitation | 16.1% | |
|
Riverside December Weather Records 1893–2024 |
||
|---|---|---|
| Highest temperature | 94 °F | December 3, 1958 |
| Lowest temperature | 21 °F | December 12, 1949 |
| Highest daily low | 67 °F | December 16, 1998 |
| Lowest daily high | 37 °F | December 13, 1932 |
| Hottest average high temperature | 78.9 °F | 1917 |
| Coldest average high temperature | 59.2 °F | 1931 |
| Most daily precipitation | 3.3 inches | December 11, 1943 |
| Most monthly precipitation | 7.9 inches | 1921 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 70.7 | 44.3 | 89 | 29 |
| December 2 | 70.5 | 44.2 | 87 | 28 |
| December 3 | 70.2 | 44.1 | 94 | 29 |
| December 4 | 69.8 | 44.0 | 88 | 25 |
| December 5 | 69.6 | 43.7 | 90 | 26 |
| December 6 | 69.4 | 43.5 | 90 | 28 |
| December 7 | 69.2 | 43.4 | 90 | 22 |
| December 8 | 68.9 | 43.3 | 87 | 27 |
| December 9 | 68.7 | 43.3 | 91 | 26 |
| December 10 | 68.5 | 43.1 | 87 | 27 |
| December 11 | 68.3 | 43.0 | 90 | 23 |
| December 12 | 68.1 | 42.8 | 88 | 21 |
| December 13 | 68.1 | 42.7 | 89 | 26 |
| December 14 | 68.0 | 42.6 | 83 | 23 |
| December 15 | 67.9 | 42.5 | 86 | 27 |
| December 16 | 67.7 | 42.4 | 86 | 28 |
| December 17 | 67.5 | 42.3 | 87 | 27 |
| December 18 | 67.5 | 42.2 | 89 | 29 |
| December 19 | 67.5 | 42.2 | 90 | 26 |
| December 20 | 67.4 | 42.2 | 87 | 27 |
| December 21 | 67.4 | 42.2 | 90 | 25 |
| December 22 | 67.5 | 42.1 | 85 | 25 |
| December 23 | 67.4 | 42.2 | 84 | 26 |
| December 24 | 67.4 | 42.2 | 86 | 24 |
| December 25 | 67.4 | 42.3 | 84 | 25 |
| December 26 | 67.4 | 42.3 | 86 | 21 |
| December 27 | 67.4 | 42.3 | 86 | 24 |
| December 28 | 67.4 | 42.4 | 86 | 27 |
| December 29 | 67.4 | 42.4 | 90 | 24 |
| December 30 | 67.5 | 42.4 | 86 | 22 |
| December 31 | 67.5 | 42.3 | 91 | 25 |