Weather in Santa Rosa, California, United States in September
In an average September, Santa Rosa sees a daily high around 87°F and a low around 56°F, based on 1981–2026 of local climate records.
| Average high | 87°F |
|---|---|
| Typical high range | 76°F to 97°F |
| Average low | 56°F |
| Typical low range | 50°F to 62°F |
| Average daily precipitation | 0.00 in |
September records
The most extreme September on record for each metric, across 1981–2026. For rainfall, the wettest and driest are by total September accumulation.
High
Highest
114°F
2022-09-06
Lowest
60°F
1986-09-26
Low
Highest
78°F
2022-09-06
Lowest
45°F
2019-09-29
Feels-like
Highest
119°F
2022-09-06
Lowest
38°F
2019-09-29
Humidity
Highest
14.9 g/m³
1992-09-30
Lowest
2.6 g/m³
1984-09-25
Wind
Highest
20 mph
1992-09-25
Lowest
4 mph
1982-09-16
Precip
Wettest
2.37 in
1989
Driest
0.00 in
2006
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