|
Typical Washington D.C. September Weather 1991–2020 |
||
|---|---|---|
| Average daily high | 80.3 °F | |
| Average daily low | 63.7 °F | |
| Average monthly precipitation | 3.9 inches | |
| Average monthly snow | none | |
|
Washington D.C. September Weather Records 1851–2023 |
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|---|---|---|
| Highest temperature | 104 °F | September 7, 1881 |
| Lowest temperature | 36 °F | September 23, 1904 |
| Highest daily low | 79 °F | September 4, 2018 |
| Lowest daily high | 52 °F | September 28, 1984 |
| Hottest average temperature | 6.3 °F above average |
1881 |
| Coldest average temperature | -7.9 °F below average |
1917 |
| Most daily precipitation | 5.2 inches | September 1, 1922 |
| Most monthly precipitation | 17.5 inches | 1934 |
| Most daily snow | none | - |
| Most monthly snow | none | - |
| Day | Average (°F) | Record (°F) | ||
|---|---|---|---|---|
| High | Low | High | Low | |
| September 1 | 84.7 | 67.9 | 99 | 50 |
| September 2 | 84.4 | 67.6 | 101 | 50 |
| September 3 | 84.2 | 67.4 | 98 | 48 |
| September 4 | 83.9 | 67.1 | 96 | 49 |
| September 5 | 83.6 | 66.9 | 97 | 50 |
| September 6 | 83.4 | 66.6 | 98 | 47 |
| September 7 | 83.2 | 66.3 | 104 | 46 |
| September 8 | 82.9 | 66.1 | 100 | 52 |
| September 9 | 82.7 | 65.9 | 98 | 48 |
| September 10 | 82.3 | 65.6 | 98 | 44 |
| September 11 | 81.9 | 65.2 | 98 | 40 |
| September 12 | 81.6 | 64.9 | 98 | 41 |
| September 13 | 81.3 | 64.6 | 95 | 44 |
| September 14 | 81.0 | 64.3 | 95 | 46 |
| September 15 | 80.6 | 63.9 | 97 | 43 |
| September 16 | 80.2 | 63.5 | 96 | 44 |
| September 17 | 79.8 | 63.1 | 96 | 44 |
| September 18 | 79.4 | 62.7 | 91 | 45 |
| September 19 | 79.0 | 62.3 | 96 | 44 |
| September 20 | 78.7 | 61.9 | 94 | 41 |
| September 21 | 78.4 | 61.6 | 96 | 41 |
| September 22 | 78.0 | 61.2 | 98 | 39 |
| September 23 | 77.6 | 60.8 | 98 | 36 |
| September 24 | 77.2 | 60.4 | 99 | 39 |
| September 25 | 76.9 | 60.0 | 95 | 39 |
| September 26 | 76.6 | 59.7 | 96 | 38 |
| September 27 | 76.2 | 59.4 | 95 | 40 |
| September 28 | 75.8 | 59.0 | 91 | 42 |
| September 29 | 75.4 | 58.6 | 93 | 40 |
| September 30 | 75.0 | 58.2 | 91 | 38 |