Weather in San Francisco in September
In an average September, San Francisco sees a daily high around 67°F and a low around 56°F, based on 1980–2026 of local climate records.
| Average high | 67°F |
|---|---|
| Typical high range | 62°F to 73°F |
| Average low | 56°F |
| Typical low range | 54°F to 60°F |
| Average daily precipitation | 0.00 in |
September records
The most extreme September on record for each metric, across 1980–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
95°F
2017-09-01
Lowest
58°F
2006-09-29
Low
Highest
67°F
2017-09-02
Lowest
50°F
2007-09-30
Feels-like
Highest
111°F
2017-09-01
Lowest
50°F
2007-09-30
Humidity
Highest
14.9 g/m³
2017-09-10
Lowest
5.9 g/m³
1984-09-25
Wind
Highest
24 mph
2007-09-20
Lowest
6 mph
1998-09-27
Gust
Highest
40 mph
2019-09-29
Lowest
12 mph
1998-09-27
Precip
Wettest
1.09 in
1986
Driest
0.03 in
1984
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