Weather on March 31
Santa Rosa, CA
55 Years of Data
Avg High
68°F
Avg Low
44°F
Warmest
2000
75°F avg
Coldest
1982
45°F avg
About This Date
March 31st in Santa Rosa, CA typically brings mild spring weather, with average highs around 68°F and lows near 44°F. Over 56 years of records, the warmest March 31st was in 2000 (75°F average), while the coldest was 1982 (45°F) — a 30°F range across recorded history. Rain or other precipitation has occurred on about 25% of March 31st dates historically, with the wettest March 31st recording 6.6" of rain. The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.5°F warmer on this date compared to 20-30 years ago.
Planning for March 31st in Santa Rosa, CA? Great weather for outdoor activities.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 76° | 57° | 66° | 1.12" | — |
| 2025 | 59° | 46° | 53° | 1.37" | — |
| 2024 | 67° | 43° | 55° | — | — |
| 2023 | 62° | 38° | 50° | — | — |
| 2022 | 70° | 44° | 57° | — | — |
| 2021 | 84° | 46° | 65° | — | — |
| 2020 | 69° | 50° | 60° | — | — |
| 2019 | 77° | 40° | 58° | — | — |
| 2018 | 71° | 49° | 60° | — | — |
| 2017 | 75° | 44° | 60° | — | — |
| 2016 | 65° | 47° | 56° | — | — |
| 2015 | 69° | 48° | 59° | — | — |
| 2014 | 51° | 44° | 48° | — | — |
| 2013 | 62° | 52° | 57° | — | — |
| 2012 | 63° | 43° | 53° | 0.79" | — |
| 2011 | 86° | 49° | 67° | — | — |
| 2010 | 58° | 38° | 48° | 0.91" | — |
| 2009 | 74° | 43° | 58° | — | — |
| 2008 | 63° | 32° | 47° | — | — |
| 2007 | 72° | 38° | 55° | — | — |
| 2006 | 56° | 46° | 51° | 2.82" | — |
| 2005 | 73° | 37° | 55° | — | — |
| 2004 | 68° | 42° | 55° | — | — |
| 2003 | 69° | 46° | 58° | — | — |
| 2002 | 75° | 44° | 60° | — | — |
| 2001 | 79° | 49° | 64° | — | — |
| 2000warmest | 83° | 67° | 75° | — | — |
| 1999 | 55° | 36° | 45° | 1.04" | — |
| 1998 | 56° | 44° | 50° | 1.73" | — |
| 1997 | 61° | 38° | 49° | 0.05" | — |
| 1996 | 69° | 42° | 56° | — | — |
| 1995 | 70° | 42° | 56° | — | — |
| 1994 | 71° | 41° | 56° | — | — |
| 1993 | 64° | 47° | 55° | — | — |
| 1992 | 74° | 43° | 58° | — | — |
| 1991 | 69° | 52° | 60° | — | — |
| 1990 | 58° | 46° | 52° | — | — |
| 1989 | 67° | 52° | 59° | — | — |
| 1988 | 77° | 57° | 67° | — | — |
| 1987 | 73° | 42° | 58° | — | — |
| 1986 | 63° | 48° | 55° | — | — |
| 1985 | 74° | 45° | 59° | — | — |
| 1984 | 57° | 42° | 50° | 0.56" | — |
| 1983 | 69° | 44° | 57° | 0.43" | — |
| 1982coldest | 49° | 42° | 45° | 6.6" | — |
| 1981 | 65° | 40° | 52° | — | — |
| 1980 | 67° | 44° | 55° | — | — |
| 1979 | 67° | 33° | 50° | — | — |
| 1978 | 73° | 52° | 62° | 0.3" | — |
| 1977 | 69° | 32° | 51° | — | — |
| 1976 | 69° | 44° | 57° | 0.1" | — |
| 1975 | 69° | 41° | 55° | — | — |
| 1974 | 61° | 40° | 50° | 0.15" | — |
| 1973 | 63° | 36° | 49° | — | — |
| 1972 | 70° | 44° | 57° | — | — |
| 1971 | 77° | 33° | 55° | — | — |
56 years of data from SANTA ROSA