What to Wear in Washington DC in September
Warm and lovely — great time to visit. Expect 18°–27°C with 8 rainy days on average.
☀️
High
27°C
🌙
Low
18°C
🌧️
Rain days
8
🌡️
Feel
Pleasantly Warm
Typical outfit
~23°C average
About September in Washington DC
September in Washington DC typically brings warm and lovely — great time to visit. With averages of 18°–27°C, the conditions call for perfect weather for exploring! light layers will keep you comfortable all day.
The classic "three-layer" rule works perfectly here: a base, a mid-layer, and something for wind.
September in other cities