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Get the Washington DC weather forecast without ads, cookies, or tracking. Open-Meteo data, 10-day forecast, hourly conditions, and radar — all free. click here to hide this
July is the hottest month in Washington DC, with an average high of 89°F / 32°C; January is the coldest (44°F / 7°C). July is the wettest month, averaging 4.3 in / 110 mm of precipitation.
| Month | High °F / °C | Low °F / °C | Precip in / mm | Wet days |
|---|---|---|---|---|
| Jan | 44 / 7 | 30 / -1 | 2.9 / 73 | 7 |
| Feb | 48 / 9 | 31 / 0 | 2.6 / 66 | 7 |
| Mar | 56 / 13 | 38 / 3 | 3.5 / 89 | 9 |
| Apr | 67 / 20 | 48 / 9 | 3.2 / 81 | 8 |
| May | 76 / 25 | 58 / 14 | 3.9 / 100 | 9 |
| Jun | 85 / 29 | 67 / 19 | 4.2 / 107 | 8 |
| Jul | 89 / 32 | 72 / 22 | 4.3 / 110 | 8 |
| Aug | 87 / 31 | 71 / 21 | 3.3 / 83 | 7 |
| Sep | 80 / 27 | 64 / 18 | 3.9 / 100 | 7 |
| Oct | 69 / 21 | 52 / 11 | 3.7 / 93 | 6 |
| Nov | 58 / 14 | 41 / 5 | 2.9 / 74 | 6 |
| Dec | 48 / 9 | 34 / 1 | 3.4 / 87 | 8 |
Extremes since 1937: highest 105°F / 41°C (August 17, 1997), lowest -5°F / -21°C (January 17, 1982).
Daylight lasts about 14.7 hours in June and 9.3 hours in December.
Data: Meteostat — Washington National Airport, 1991–2020 averages.
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