|
Typical Philadelphia December Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 46.0 °F | |
| Average daily low | 31.9 °F | |
| Average monthly precipitation | 4.0 inches | |
| Average monthly snow | 3.6 inches | |
| Daily chance of precipitation | 35.4% | |
| Daily chance of snow | 5.9% | |
|
Philadelphia December Weather Records 1894–2024 |
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|---|---|---|
| Highest temperature | 73 °F | December 7, 1998 |
| Lowest temperature | -7 °F | December 26, 1914 |
| Highest daily low | 62 °F | December 24, 2015 |
| Lowest daily high | 5 °F | December 30, 1917 |
| Hottest average high temperature | 58.2 °F | 2015 |
| Coldest average high temperature | 25.2 °F | 1910 |
| Most daily precipitation | 3.5 inches | December 10, 1907 |
| Most monthly precipitation | 8.9 inches | 2009 |
| Most daily snow | 22.5 inches | December 19, 2009 |
| Most monthly snow | 27.0 inches | 1910 |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| December 1 | 50.3 | 35.4 | 72 | 10 |
| December 2 | 50.0 | 35.2 | 66 | 9 |
| December 3 | 49.8 | 35.1 | 68 | 9 |
| December 4 | 49.5 | 34.8 | 73 | 11 |
| December 5 | 49.1 | 34.5 | 71 | 8 |
| December 6 | 48.7 | 34.2 | 72 | -2 |
| December 7 | 48.4 | 33.9 | 73 | 3 |
| December 8 | 48.2 | 33.7 | 67 | 12 |
| December 9 | 48.1 | 33.5 | 70 | 5 |
| December 10 | 47.9 | 33.4 | 71 | -3 |
| December 11 | 47.5 | 33.1 | 68 | 10 |
| December 12 | 47.1 | 32.8 | 69 | 8 |
| December 13 | 46.8 | 32.6 | 71 | 5 |
| December 14 | 46.5 | 32.3 | 70 | 6 |
| December 15 | 46.2 | 32.1 | 69 | -5 |
| December 16 | 45.8 | 31.8 | 68 | -4 |
| December 17 | 45.6 | 31.6 | 65 | -2 |
| December 18 | 45.4 | 31.4 | 70 | -4 |
| December 19 | 45.1 | 31.2 | 63 | 0 |
| December 20 | 44.9 | 31.0 | 64 | 1 |
| December 21 | 44.8 | 30.8 | 67 | 1 |
| December 22 | 44.7 | 30.7 | 68 | 1 |
| December 23 | 44.6 | 30.6 | 70 | 6 |
| December 24 | 44.4 | 30.4 | 71 | 3 |
| December 25 | 44.2 | 30.2 | 68 | -4 |
| December 26 | 44.1 | 30.1 | 68 | -7 |
| December 27 | 43.9 | 29.9 | 65 | 0 |
| December 28 | 43.8 | 29.8 | 66 | -2 |
| December 29 | 43.8 | 29.7 | 72 | -4 |
| December 30 | 43.8 | 29.6 | 65 | -5 |
| December 31 | 43.7 | 29.5 | 63 | -3 |