What is the weather like in Baltimore vs Washington in September?

In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; Washington averages 28°C high / 17°C low with about 108 mm.

Baltimore vs Washington in September

Baltimore and Washington are nearly tied in September — 79 vs 80 on SeasonMap's comfort score. Baltimore is hot, rainy, clean air; Washington is hot, rainy, clean air.

Baltimore vs Washington — September climate, side by side

	🇺🇸 Baltimore	🇺🇸 Washington
Comfort score	79/100 (B)	80/100 (A)
Feels-like high	29°C	30°C
Avg high / low	28° / 19°	28° / 17°
Rainfall	106 mm	108 mm
Rainy days	7	8
Humidity	76%	74%
Air quality (AQI)	45	47

Monthly climate normals (ERA5 reanalysis). Comfort scores are SeasonMap estimates.

Month by month

Baltimore vs Washington in September — FAQ

Is September better in Baltimore or Washington?: Baltimore and Washington are nearly tied in September — 79 vs 80 on SeasonMap's comfort score. Baltimore is hot, rainy, clean air; Washington is hot, rainy, clean air.
What is the weather like in Baltimore vs Washington in September?: In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; Washington averages 28°C high / 17°C low with about 108 mm.