Weather in Washington in September
In an average September, Washington sees a daily high around 80°F and a low around 62°F, based on 1980–2026 of local climate records.
| Average high | 80°F |
|---|---|
| Typical high range | 71°F to 88°F |
| Average low | 62°F |
| Typical low range | 52°F to 71°F |
| Average daily precipitation | 0.10 in |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
101°F
2023-09-04
Lowest
53°F
1984-09-28
Low
Highest
79°F
1993-09-03
Lowest
40°F
1983-09-23
Feels-like
Highest
128°F
1991-09-16
Lowest
34°F
1983-09-23
Humidity
Highest
23.0 g/m³
2018-09-04
Lowest
5.4 g/m³
1985-09-13
Wind
Highest
28 mph
2003-09-19
Lowest
4 mph
2021-09-25
Gust
Highest
72 mph
2003-09-19
Lowest
8 mph
2003-09-07
Precip
Wettest
11.36 in
1999
Driest
0.53 in
2005
See Washington's live weather grade →
Visiting Washington in September? See how its comfort stacks up against where you live.
Compare Washington with your city →