Weather on May 31
Santa Rosa, CA
55 Years of Data
Avg High
78°F
Avg Low
50°F
Warmest
2001
80°F avg
Coldest
1971
54°F avg
About This Date
May 31st in Santa Rosa, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 50°F — a 28°F daily swing. Over 55 years of records, the warmest May 31st was in 2001 (80°F average), while the coldest was 1971 (54°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 31st dates historically, with the wettest May 31st recording 0.79" of rain. The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.4°F warmer on this date compared to 20-30 years ago.
Planning for May 31st in Santa Rosa, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 92° | 54° | 73° | — | — |
| 2024 | 88° | 53° | 70° | — | — |
| 2023 | 73° | 49° | 61° | — | — |
| 2022 | 87° | 51° | 69° | — | — |
| 2021 | 91° | 52° | 71° | — | — |
| 2020 | 73° | 57° | 65° | — | — |
| 2019 | 79° | 51° | 65° | — | — |
| 2018 | 75° | 49° | 62° | — | — |
| 2017 | 78° | 52° | 65° | — | — |
| 2016 | 88° | 49° | 68° | — | — |
| 2015 | 67° | 48° | 57° | — | — |
| 2014 | 77° | 47° | 62° | — | — |
| 2013 | 88° | 55° | 71° | — | — |
| 2012 | 85° | 46° | 65° | — | — |
| 2011 | 70° | 44° | 57° | 0.51" | — |
| 2010 | 79° | 52° | 65° | — | — |
| 2009 | 69° | 53° | 61° | — | — |
| 2008 | 67° | 50° | 58° | — | — |
| 2007 | 64° | 49° | 56° | — | — |
| 2006 | 75° | 48° | 62° | — | — |
| 2005 | 81° | 51° | 66° | — | — |
| 2004 | 85° | 50° | 67° | — | — |
| 2003 | 75° | 46° | 61° | — | — |
| 2002 | 72° | 54° | 63° | — | — |
| 2001warmest | 98° | 63° | 80° | — | — |
| 2000 | 84° | 49° | 66° | — | — |
| 1999 | 62° | 52° | 57° | — | — |
| 1998 | 72° | 49° | 60° | — | — |
| 1997 | 86° | 57° | 72° | — | — |
| 1996 | 78° | 48° | 63° | — | — |
| 1995 | 83° | 48° | 65° | — | — |
| 1994 | 75° | 54° | 64° | — | — |
| 1993 | 70° | 56° | 63° | 0.79" | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 85° | 48° | 66° | — | — |
| 1990 | 64° | 50° | 57° | 0.18" | — |
| 1989 | 86° | 47° | 66° | — | — |
| 1988 | 73° | 51° | 62° | — | — |
| 1987 | 74° | 53° | 63° | — | — |
| 1986 | 63° | 48° | 55° | — | — |
| 1985 | 70° | 49° | 59° | — | — |
| 1984 | 80° | 49° | 64° | — | — |
| 1983 | 79° | 52° | 65° | — | — |
| 1982 | 66° | 51° | 59° | — | — |
| 1981 | 83° | 50° | 66° | — | — |
| 1980 | 73° | 51° | 62° | — | — |
| 1979 | 93° | 44° | 69° | — | — |
| 1978 | 94° | 60° | 77° | — | — |
| 1977 | 91° | 49° | 70° | — | — |
| 1976 | 75° | 54° | 64° | — | — |
| 1975 | 79° | 52° | 65° | — | — |
| 1974 | 75° | 43° | 59° | — | — |
| 1973 | 72° | 52° | 62° | — | — |
| 1972 | 75° | 47° | 61° | — | — |
| 1971coldest | 69° | 40° | 54° | — | — |
55 years of data from SANTA ROSA