Weather in Santa Rosa in September
In an average September, Santa Rosa sees a daily high around 82°F and a low around 56°F, based on 1980–2026 of local climate records.
| Average high | 82°F |
|---|---|
| Typical high range | 73°F to 91°F |
| Average low | 56°F |
| Typical low range | 51°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
108°F
2022-09-06
Lowest
62°F
1986-09-25
Low
Highest
75°F
2022-09-06
Lowest
45°F
2013-09-27
Feels-like
Highest
122°F
2020-09-06
Lowest
39°F
2019-09-29
Humidity
Highest
15.0 g/m³
1983-09-14
Lowest
3.4 g/m³
2006-09-23
Wind
Highest
15 mph
2019-09-29
Lowest
3 mph
1999-09-27
Gust
Highest
39 mph
2019-09-29
Lowest
11 mph
1989-09-22
Precip
Wettest
2.62 in
1989
Driest
0.00 in
1988
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