What is the weather like in Baltimore vs San Francisco in September?

In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.

Baltimore vs San Francisco in September

San Francisco is the better pick in September — 96 vs 79 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Baltimore is hot, rainy, clean air.

Baltimore vs San Francisco — September climate, side by side

	Baltimore	San Francisco
Comfort score	79/100 (B)	96/100 (S)
Feels-like high	29°C	21°C
Avg high / low	28° / 19°	22° / 14°
Rainfall	106 mm	3 mm
Rainy days	7	1
Humidity	76%	75%
Air quality (AQI)	45	35

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

Baltimore vs San Francisco in September — FAQ

Is September better in Baltimore or San Francisco?: San Francisco is the better pick in September — 96 vs 79 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Baltimore is hot, rainy, clean air.
What is the weather like in Baltimore vs San Francisco in September?: In September, Baltimore averages 28°C high / 19°C low with about 106 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.