‹ Washington, DC weather by month
Typical August weather
Washington, DC
District of Columbia · August
88° days
71° nights
about 6 rainy days · 13½ hours of daylight
What to pack
- Swimsuit
- Sunscreen
What August feels like
The old line about Washington being built on a swamp is not quite true, but August makes the case anyway, and this is the month Congress leaves town and anyone with a beach house goes with them. It is actually the driest of the summer months; what gets you is the humidity, not the rain.
Expect about 6 days with real rain — enough to notice, not enough to plan around. It’s sticky — light fabrics and an afternoon break earn their keep. about 11 afternoons top 90°.
The numbers
| Typical high | 88° |
|---|---|
| Typical low | 71° |
| Days with real rain | 6 |
| Total rain | 3.3 in |
| Humidity | sticky |
| Sunrise / sunset (mid-month) | 6:22 am / 8:03 pm |