Washington D.C., District of Columbia weather in August

Averages from 2021–2025 (155 days of record).

Average high: 85°F
Average low: 68°F
Rainy days: ~13 per month
Total precipitation: 5.5 in
Warmest recorded: 96°F
Coldest recorded: 55°F

Expect August days in Washington D.C., District of Columbia to top out around 85°F and cool to about 68°F overnight, with roughly 13 days of measurable rain across the month. In recent years August has ranged from 55°F to 96°F.

Other months

January February March April May June July September October November December

Current Washington D.C., District of Columbia forecast → · Historical data by Open-Meteo (ERA5).