What is the weather like in Mammoth Lakes vs San Francisco in September?

In September, Mammoth Lakes averages 22°C high / 3°C low with about 13 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.

Mammoth Lakes vs San Francisco in September

San Francisco is the better pick in September — 96 vs 19 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Mammoth Lakes is nice, dry, clean air.

Mammoth Lakes vs San Francisco — September climate, side by side

	🇺🇸 Mammoth Lakes	🇺🇸 San Francisco
Comfort score	19/100 (F)	96/100 (S)
Feels-like high	20°C	21°C
Avg high / low	22° / 3°	22° / 14°
Rainfall	13 mm	3 mm
Rainy days	4	1
Humidity	47%	75%
Air quality (AQI)	42	35

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

Month by month

Mammoth Lakes vs San Francisco in September — FAQ

Is September better in Mammoth Lakes or San Francisco?: San Francisco is the better pick in September — 96 vs 19 on SeasonMap's comfort score. San Francisco is nice, dry, clean air, while Mammoth Lakes is nice, dry, clean air.
What is the weather like in Mammoth Lakes vs San Francisco in September?: In September, Mammoth Lakes averages 22°C high / 3°C low with about 13 mm of rain; San Francisco averages 22°C high / 14°C low with about 3 mm.