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

In September, Hyannis averages 23°C high / 14°C low with about 113 mm of rain; Washington averages 28°C high / 17°C low with about 108 mm.

Hyannis vs Washington in September

Hyannis and Washington are nearly tied in September — 78 vs 80 on SeasonMap's comfort score. Hyannis is nice, rainy, clean air; Washington is hot, rainy, clean air.

Hyannis vs Washington — September climate, side by side

	🇺🇸 Hyannis	🇺🇸 Washington
Comfort score	78/100 (B)	80/100 (A)
Feels-like high	23°C	30°C
Avg high / low	23° / 14°	28° / 17°
Rainfall	113 mm	108 mm
Rainy days	8	8
Humidity	80%	74%
Air quality (AQI)	43	47

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

Month by month

Hyannis vs Washington in September — FAQ

Is September better in Hyannis or Washington?: Hyannis and Washington are nearly tied in September — 78 vs 80 on SeasonMap's comfort score. Hyannis is nice, rainy, clean air; Washington is hot, rainy, clean air.
What is the weather like in Hyannis vs Washington in September?: In September, Hyannis averages 23°C high / 14°C low with about 113 mm of rain; Washington averages 28°C high / 17°C low with about 108 mm.