Weather in San Diego in September
In an average September, San Diego sees a daily high around 74°F and a low around 65°F, based on 1980–2026 of local climate records.
| Average high | 74°F |
|---|---|
| Typical high range | 69°F to 80°F |
| Average low | 65°F |
| Typical low range | 62°F to 70°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
96°F
1988-09-04
Lowest
64°F
1986-09-23
Low
Highest
78°F
2022-09-04
Lowest
56°F
1999-09-19
Feels-like
Highest
116°F
1988-09-03
Lowest
56°F
1999-09-19
Humidity
Highest
20.1 g/m³
1998-09-01
Lowest
9.6 g/m³
2007-09-20
Wind
Highest
20 mph
1986-09-25
Lowest
6 mph
2016-09-20
Gust
Highest
31 mph
1986-09-25
Lowest
11 mph
2016-09-20
Precip
Wettest
1.01 in
1997
Driest
0.00 in
2008
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