|
Typical Philadelphia September Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 78.8 °F | |
| Average daily low | 61.7 °F | |
| Average monthly precipitation | 4.4 inches | |
| Average monthly snow | none | |
| Daily chance of precipitation | 31.0% | |
| Daily chance of snow | 0% | |
|
Philadelphia September Weather Records 1894–2024 |
||
|---|---|---|
| Highest temperature | 100 °F | September 3, 1953 |
| Lowest temperature | 29 °F | September 23, 1915 |
| Highest daily low | 80 °F | September 9, 2016 |
| Lowest daily high | 50 °F | September 29, 1914 |
| Hottest average high temperature | 83.6 °F | 2015 |
| Coldest average high temperature | 66.6 °F | 1914 |
| Most daily precipitation | 6.6 inches | September 16, 1999 |
| Most monthly precipitation | 13.1 inches | 1999 |
| Most daily snow | none | - |
| Most monthly snow | none | - |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| September 1 | 83.0 | 65.9 | 97 | 40 |
| September 2 | 82.8 | 65.7 | 100 | 42 |
| September 3 | 82.6 | 65.4 | 100 | 42 |
| September 4 | 82.3 | 65.1 | 96 | 45 |
| September 5 | 82.1 | 64.8 | 95 | 40 |
| September 6 | 81.8 | 64.5 | 95 | 37 |
| September 7 | 81.6 | 64.3 | 97 | 40 |
| September 8 | 81.4 | 64.1 | 95 | 43 |
| September 9 | 81.1 | 63.8 | 95 | 37 |
| September 10 | 80.8 | 63.5 | 97 | 31 |
| September 11 | 80.4 | 63.2 | 98 | 36 |
| September 12 | 80.1 | 62.8 | 95 | 41 |
| September 13 | 79.8 | 62.6 | 95 | 37 |
| September 14 | 79.5 | 62.4 | 92 | 30 |
| September 15 | 79.1 | 62.0 | 93 | 30 |
| September 16 | 78.7 | 61.6 | 94 | 30 |
| September 17 | 78.3 | 61.2 | 94 | 37 |
| September 18 | 78.0 | 60.7 | 89 | 38 |
| September 19 | 77.6 | 60.3 | 92 | 39 |
| September 20 | 77.3 | 60.0 | 90 | 41 |
| September 21 | 76.9 | 59.7 | 93 | 32 |
| September 22 | 76.5 | 59.3 | 94 | 39 |
| September 23 | 76.1 | 58.9 | 95 | 29 |
| September 24 | 75.7 | 58.5 | 95 | 32 |
| September 25 | 75.4 | 58.1 | 92 | 35 |
| September 26 | 75.1 | 57.8 | 92 | 34 |
| September 27 | 74.8 | 57.5 | 91 | 34 |
| September 28 | 74.3 | 57.1 | 86 | 31 |
| September 29 | 73.9 | 56.7 | 87 | 30 |
| September 30 | 73.5 | 56.3 | 90 | 30 |