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Monthly
Precipitation
Temperature
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°Celsius
°Fahrenheit
Monthly Historical Averages
San Francisco, CA
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Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
18°
20
17°
21
17°
22
17°
23
20°
24
24°
25
18°
26
18°
27
18°
28
19°
29
18°
30
17°
Forecast
Saturday, September 19, 2026
Day
18°
Feels 17
Wind
20 km/h SW
Gust
30 km/h
Humidity
74%
P.O.P
10%
Night
14°
Feels 13
Wind
17 km/h W
Gust
26 km/h
Humidity
91%
P.O.P
30%
Historical Averages
Sep 19
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.
September
Average Temperature
High
21°
Feels 21
Low
13°
Feels 13
Average Precipitation
2 Days
Rain amount
7.6mm
Snow amount
0cm