Weather on January 31
Santa Rosa, CA
55 Years of Data
Avg High
60°F
Avg Low
40°F
Warmest
2015
66°F avg
Coldest
1979
38°F avg
About This Date
January 31st in Santa Rosa, CA typically brings mild winter weather, with average highs around 60°F and lows near 40°F. Over 56 years of records, the warmest January 31st was in 2015 (66°F average), while the coldest was 1979 (38°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 29% of January 31st dates historically, with the wettest January 31st recording 3.02" of rain. The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.2°F warmer on this date compared to 20-30 years ago.
Planning for January 31st in Santa Rosa, CA? Great weather for outdoor activities.
Warming Trend
1.2°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 67° | 39° | 53° | — | — |
| 2025 | 51° | 46° | 49° | 1.09" | — |
| 2024 | 64° | 55° | 60° | 2.18" | — |
| 2023 | 60° | 27° | 43° | — | — |
| 2022 | 66° | 36° | 51° | — | — |
| 2021 | 66° | 44° | 55° | 0.1" | — |
| 2020 | 68° | 42° | 55° | — | — |
| 2019 | 63° | 49° | 56° | 0.3" | — |
| 2018 | 68° | 35° | 52° | — | — |
| 2017 | 61° | 44° | 52° | — | — |
| 2016 | 53° | 42° | 48° | — | — |
| 2015warmest | 78° | 53° | 66° | — | — |
| 2014 | 62° | 41° | 52° | — | — |
| 2013 | 66° | 45° | 55° | — | — |
| 2012 | 58° | 40° | 49° | — | — |
| 2011 | 66° | 34° | 50° | — | — |
| 2010 | 58° | 40° | 49° | — | — |
| 2009 | 71° | 34° | 52° | — | — |
| 2008 | 51° | 34° | 42° | 2.16" | — |
| 2007 | 58° | 45° | 51° | — | — |
| 2006 | 59° | 36° | 47° | — | — |
| 2005 | 66° | 34° | 50° | — | — |
| 2004 | 59° | 32° | 46° | — | — |
| 2003 | 66° | 46° | 56° | — | — |
| 2002 | 54° | 30° | 42° | — | — |
| 2001 | 64° | 31° | 47° | — | — |
| 2000 | 50° | 47° | 48° | 0.56" | — |
| 1999 | 55° | 39° | 47° | 3.02" | — |
| 1998 | 60° | 50° | 55° | 0.3" | — |
| 1997 | 60° | 50° | 55° | 0.03" | — |
| 1996 | 60° | 48° | 54° | 2.03" | — |
| 1995 | 68° | 57° | 63° | 0.15" | — |
| 1994 | 64° | 42° | 53° | — | — |
| 1993 | 65° | 36° | 50° | — | — |
| 1992 | 61° | 42° | 51° | — | — |
| 1991 | 59° | 41° | 50° | — | — |
| 1990 | 52° | 36° | 44° | 0.03" | — |
| 1989 | 66° | 40° | 53° | — | — |
| 1988 | 56° | 35° | 45° | — | — |
| 1987 | 58° | 38° | 48° | — | — |
| 1986 | 58° | 50° | 54° | 1.7" | — |
| 1985 | 57° | 33° | 45° | — | — |
| 1984 | 59° | 46° | 53° | — | — |
| 1983 | 61° | 34° | 47° | — | — |
| 1982 | 65° | 33° | 49° | — | — |
| 1981 | 61° | 31° | 46° | — | — |
| 1980 | 55° | 37° | 46° | — | — |
| 1979coldest | 43° | 33° | 38° | 0.86" | — |
| 1978 | 55° | 35° | 45° | — | — |
| 1977 | 62° | 37° | 50° | — | — |
| 1976 | 71° | 37° | 54° | — | — |
| 1975 | 52° | 35° | 43° | 1.4" | — |
| 1974 | 51° | 44° | 48° | — | — |
| 1973 | 62° | 38° | 50° | 0.15" | — |
| 1972 | 57° | 26° | 42° | — | — |
| 1971 | 57° | 37° | 47° | — | — |
56 years of data from SANTA ROSA