ClimateAverages

San Francisco Weather in September

JanFebMarAprMayJunJulAugSepOctNovDec
Right now
18°C
Patchy rain nearby · feels like 13°C
Humidity
93%
Wind
7 kph NE
UV
0
Rain
0%
Updated Jul 9, 05:45 AMWeather data by WeatherAPI.com
September daytime high
24.7°C
September overnight low
16.4°C
September average
20.1°C

In September, San Francisco typically sees daytime highs of 24.7°C and overnight lows around 16.4°C. Compared to the annual average high of 25.2°C, September runs -0.5°C.

vs. annual avg high
-0.5°C
Rank among 12 months
#9 warmest
Hottest year overall
2023

Where September ranks in San Francisco

JanFebMarAprMayJunJulAugSep25°OctNovDec

FAQ

What is the average temperature in San Francisco in September?

September in San Francisco averages a daytime high of 24.7°C and an overnight low of 16.4°C.

Is September warm or cold in San Francisco?

September runs -0.5°C compared to San Francisco's annual average high of 25.2°C, ranking #9 of 12 months by warmth.

What should I pack for San Francisco in September?

Plan for daytime highs near 24.7°C and cooler evenings around 16.4°C.

Other months for San Francisco

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