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Monthly
Precipitation
Temperature
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Temperature Unit Selection
°Celsius
°Fahrenheit
Monthly Historical Averages
San Diego, CA
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September
Average Temperature
High
30°
Feels 30
Low
17°
Feels 17
Average Precipitation
1 Days
Rain amount
4.2mm
Snow amount
0cm
Daily Historical Averages
September 2026
S
M
T
W
T
F
S
1
2
29°
3
29°
4
29°
5
31°
6
29°
7
31°
8
32°
9
31°
10
29°
11
27°
12
29°
13
28°
14
30°
15
30°
16
32°
17
18
19
20
21
22
23
24
25
26
27
28
29
30
Forecast
Wednesday, September 2, 2026
Day
29°
Feels 29
Wind
19 km/h W
Gust
29 km/h
Humidity
36%
P.O.P
0%
Night
15°
Feels 15
Wind
16 km/h W
Gust
24 km/h
Humidity
87%
P.O.P
0%
Historical Averages
Sep 2
High
Feels
Low
Feels
Precip Frequency
Total Daylight
Humidity
Historical Averages are based on data recorded from 2000 onwards.