Santa Rosa Weather in October
Average highs run from 26°C on October 1 to 25°C on October 31, and lows from 16°C to 16°C. Normal precipitation for the month is 34 mm over about 9 wet days.
October day by day
The normal high and low for each date, in °C.
- Normal low
- Normal high
- Reanalysis extreme high
- Reanalysis extreme low
October at a glance
- Average high
- 26°C
- Average low
- 16°C
- Precipitation
- 34 mm
- Reanalysis high
- 31°COct 30, 2009
- Reanalysis low
- 13°COct 5, 1999
- Daylight
- 12 h 12 min to 12 h 30 min
- Cloud cover
- 81%
- Humidity
- 69%
- Dew point
- 14°C
- Wind
- 6.8 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 | Reanalysis high | Reanalysis low | Chance wet |
|---|---|---|---|---|---|
| Oct 1 | 26°C | 16°C | 28°C 1998 | 14°C 1998 | 20% |
| Oct 2 | 26°C | 16°C | 29°C 1998 | 15°C 1993 | 19% |
| Oct 3 | 26°C | 16°C | 29°C 1997 | 14°C 1994 | 20% |
| Oct 4 | 26°C | 16°C | 29°C 1993 | 14°C 2010 | 20% |
| Oct 5 | 26°C | 16°C | 29°C 2010 | 13°C 1999 | 19% |
| Oct 6 | 26°C | 16°C | 29°C 2020 | 14°C 1999 | 19% |
| Oct 7 | 26°C | 16°C | 30°C 1995 | 14°C 2000 | 20% |
| Oct 8 | 26°C | 16°C | 29°C 1994 | 14°C 1993 | 21% |
| Oct 9 | 26°C | 16°C | 29°C 1994 | 15°C 1992 | 22% |
| Oct 10 | 26°C | 16°C | 30°C 1994 | 14°C 2001 | 23% |
| Oct 11 | 26°C | 16°C | 29°C 2020 | 15°C 1995 | 23% |
| Oct 12 | 26°C | 16°C | 29°C 2020 | 14°C 1992 | 24% |
| Oct 13 | 26°C | 16°C | 29°C 2015 | 13°C 2001 | 25% |
| Oct 14 | 26°C | 16°C | 30°C 2014 | 14°C 2008 | 24% |
| Oct 15 | 26°C | 16°C | 28°C 2015 | 14°C 1992 | 24% |
| Oct 16 | 26°C | 16°C | 28°C 2003 | 14°C 1994 | 25% |
| Oct 17 | 26°C | 16°C | 30°C 2014 | 15°C 2015 | 28% |
| Oct 18 | 26°C | 16°C | 29°C 2003 | 15°C 2002 | 28% |
| Oct 19 | 26°C | 16°C | 29°C 2017 | 14°C 1992 | 28% |
| Oct 20 | 26°C | 16°C | 29°C 2016 | 14°C 1992 | 27% |
| Oct 21 | 25°C | 16°C | 29°C 1997 | 14°C 1991 | 28% |
| Oct 22 | 25°C | 16°C | 28°C 1997 | 15°C 1998 | 28% |
| Oct 23 | 25°C | 16°C | 29°C 2015 | 15°C 1994 | 29% |
| Oct 24 | 25°C | 16°C | 29°C 2015 | 15°C 2011 | 30% |
| Oct 25 | 25°C | 16°C | 28°C 2020 | 15°C 2004 | 30% |
| Oct 26 | 25°C | 16°C | 29°C 1997 | 14°C 2000 | 30% |
| Oct 27 | 25°C | 16°C | 30°C 2010 | 14°C 1991 | 30% |
| Oct 28 | 25°C | 16°C | 29°C 2010 | 15°C 1995 | 30% |
| Oct 29 | 25°C | 16°C | 28°C 1997 | 14°C 2016 | 31% |
| Oct 30 | 25°C | 16°C | 31°C 2009 | 14°C 2002 | 32% |
| Oct 31 | 25°C | 16°C | 29°C 2009 | 14°C 1999 | 32% |
Chance of rain
- Chance of a wet day
Sunrise and sunset
Times for 2026, local time (GMT-5).
- October 1
- sunrise 5:43 AM, sunset 5:55 PM
- October 31
- sunrise 5:28 AM, sunset 5:58 PM
Other months
Sources
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.