Santa Rosa Weather in October
Average highs run from 30°C on October 1 to 29°C on October 31, and lows from 19°C to 20°C. Normal precipitation for the month is 16 mm over about 6 wet days.
October day by day
The normal high and low for each date, and the record, in °C.
- Normal low
- Normal high
- Record high
- Record low
October at a glance
- Average high
- 29°C
- Average low
- 20°C
- Precipitation
- 16 mm
- Record high
- 34°COct 11, 1997
- Record low
- 13°COct 1, 1986
- Daylight
- 12 h 09 min to 12 h 14 min
- Cloud cover
- 77%
- Humidity
- 67%
- Dew point
- 16°C
- Wind
- 10.8 km/h
Every day of the month
A wet day has at least 1 mm of precipitation in the reanalysis.
| Date | Normal high | Normal low | Record high | Record low | Chance wet |
|---|---|---|---|---|---|
| Oct 1 | 30°C | 19°C | 30°C 2011 | 13°C 1986 | 13% |
| Oct 2 | 30°C | 19°C | 33°C 1997 | 18°C 1975 | 13% |
| Oct 3 | 30°C | 19°C | 32°C 1997 | 16°C 1986 | 12% |
| Oct 4 | 30°C | 19°C | 32°C 1997 | 15°C 2009 | 12% |
| Oct 5 | 30°C | 19°C | 32°C 1987 | 17°C 2007 | 12% |
| Oct 6 | 30°C | 19°C | 33°C 1997 | 16°C 2009 | 13% |
| Oct 7 | 30°C | 19°C | 31°C 1997 | 18°C 1986 | 14% |
| Oct 8 | 30°C | 19°C | 32°C 1997 | 16°C 1986 | 12% |
| Oct 9 | 30°C | 19°C | 32°C 1997 | 18°C 1994 | 13% |
| Oct 10 | 30°C | 19°C | 32°C 1987 | 15°C 2018 | 13% |
| Oct 11 | 30°C | 19°C | 34°C 1997 | 18°C 1976 | 14% |
| Oct 12 | 29°C | 19°C | 32°C 1997 | 17°C 1998 | 14% |
| Oct 13 | 29°C | 19°C | 31°C 1997 | 16°C 2010 | 13% |
| Oct 14 | 29°C | 19°C | 32°C 1997 | 16°C 1995 | 13% |
| Oct 15 | 29°C | 19°C | 33°C 1997 | 17°C 2011 | 14% |
| Oct 16 | 29°C | 19°C | 33°C 1997 | 16°C 2011 | 15% |
| Oct 17 | 29°C | 19°C | 31°C 1997 | 15°C 1976 | 14% |
| Oct 18 | 29°C | 19°C | 31°C 1997 | 15°C 2009 | 15% |
| Oct 19 | 29°C | 19°C | 32°C 2023 | 17°C 2011 | 16% |
| Oct 20 | 29°C | 19°C | 33°C 1997 | 16°C 2010 | 16% |
| Oct 21 | 29°C | 19°C | 32°C 1997 | 16°C 2010 | 16% |
| Oct 22 | 29°C | 19°C | 32°C 2009 | 16°C 1986 | 16% |
| Oct 23 | 29°C | 20°C | 32°C 1997 | 15°C 2011 | 17% |
| Oct 24 | 29°C | 20°C | 32°C 1997 | 15°C 2011 | 18% |
| Oct 25 | 29°C | 20°C | 31°C 1997 | 16°C 2010 | 18% |
| Oct 26 | 29°C | 20°C | 32°C 1997 | 18°C 1975 | 18% |
| Oct 27 | 29°C | 20°C | 32°C 1997 | 18°C 1978 | 18% |
| Oct 28 | 29°C | 20°C | 33°C 1997 | 16°C 2010 | 20% |
| Oct 29 | 29°C | 20°C | 31°C 2023 | 18°C 2009 | 20% |
| Oct 30 | 29°C | 20°C | 30°C 2008 | 17°C 1999 | 19% |
| Oct 31 | 29°C | 20°C | 34°C 1997 | 18°C 1994 | 20% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- October 1
- sunrise 6:05 AM, sunset 6:14 PM
- October 31
- sunrise 5:56 AM, sunset 6:10 PM
Other months
Sources
Records: NOAA GHCN-Daily, station PEM00084370, every year on file, quality-flagged values removed. Cloud, humidity, wind and sunshine, and temperature and precipitation: NASA POWER (MERRA-2, CERES and GEWEX SRB), 1991-2020. The data was obtained from the National Aeronautics and Space Administration (NASA) Langley Research Center's Prediction Of Worldwide Energy Resources (POWER) project funded through the NASA Earth Science Division: POWER Daily API v2, accessed 2026-09-24. Sun and moon: computed with the NOAA solar equations and Meeus.