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

In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; Hyannis averages 23°C high / 14°C low with about 113 mm.

Baltimore vs Hyannis in September

Baltimore and Hyannis are nearly tied in September — 79 vs 78 on SeasonMap's comfort score. Baltimore is hot, rainy, clean air; Hyannis is nice, rainy, clean air.

Baltimore vs Hyannis — September climate, side by side

	🇺🇸 Baltimore	🇺🇸 Hyannis
Comfort score	79/100 (B)	78/100 (B)
Feels-like high	29°C	23°C
Avg high / low	28° / 19°	23° / 14°
Rainfall	106 mm	113 mm
Rainy days	7	8
Humidity	76%	80%
Air quality (AQI)	45	43

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

Month by month

Baltimore vs Hyannis in September — FAQ

Is September better in Baltimore or Hyannis?: Baltimore and Hyannis are nearly tied in September — 79 vs 78 on SeasonMap's comfort score. Baltimore is hot, rainy, clean air; Hyannis is nice, rainy, clean air.
What is the weather like in Baltimore vs Hyannis in September?: In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; Hyannis averages 23°C high / 14°C low with about 113 mm.