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

In September, Atlanta averages 29°C high / 20°C low with about 92 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.

Atlanta vs San Francisco in September

San Francisco is the better pick in September — 96 vs 80 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Atlanta is hot, rainy.

Atlanta vs San Francisco — September climate, side by side

	Atlanta	San Francisco
Comfort score	80/100 (A)	96/100 (S)
Feels-like high	31°C	21°C
Avg high / low	29° / 20°	22° / 14°
Rainfall	92 mm	3 mm
Rainy days	5	1
Humidity	70%	75%
Air quality (AQI)	55	35

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

Atlanta vs San Francisco in September — FAQ

Is September better in Atlanta or San Francisco?: San Francisco is the better pick in September — 96 vs 80 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Atlanta is hot, rainy.
What is the weather like in Atlanta vs San Francisco in September?: In September, Atlanta averages 29°C high / 20°C low with about 92 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.