Weather on March 20
Santa Rosa, CA
55 Years of Data
Avg High
66°F
Avg Low
43°F
Warmest
2026
71°F avg
Coldest
1987
44°F avg
About This Date
March 20th in Santa Rosa, CA typically brings mild spring weather, with average highs around 66°F and lows near 43°F. Over 56 years of records, the warmest March 20th was in 2026 (71°F average), while the coldest was 1987 (44°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 20% of March 20th dates historically, with the wettest March 20th recording 2.44" of rain. The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.1°F cooler on this date compared to 20-30 years ago.
Planning for March 20th in Santa Rosa, CA? Great weather for outdoor activities.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 91° | 50° | 71° | — | — |
| 2025 | 66° | 38° | 52° | 0.13" | — |
| 2024 | 65° | 43° | 54° | — | — |
| 2023 | 56° | 41° | 48° | — | — |
| 2022 | 71° | 40° | 55° | — | — |
| 2021 | 64° | 36° | 50° | — | — |
| 2020 | 66° | 36° | 51° | — | — |
| 2019 | 69° | 45° | 57° | 1.32" | — |
| 2018 | 65° | 48° | 56° | 0.18" | — |
| 2017 | 56° | 50° | 53° | — | — |
| 2016 | 58° | 51° | 54° | — | — |
| 2015 | 70° | 48° | 59° | — | — |
| 2014 | 72° | 44° | 58° | — | — |
| 2013 | 59° | 45° | 52° | — | — |
| 2012 | 60° | 46° | 53° | — | — |
| 2011 | 56° | 43° | 49° | 2.44" | — |
| 2010 | 68° | 40° | 54° | — | — |
| 2009 | 73° | 45° | 59° | — | — |
| 2008 | 65° | 34° | 49° | — | — |
| 2007 | 68° | 51° | 60° | — | — |
| 2006 | 61° | 41° | 51° | 0.74" | — |
| 2005 | 62° | 49° | 55° | 0.13" | — |
| 2004 | 84° | 41° | 63° | — | — |
| 2003 | 64° | 46° | 55° | — | — |
| 2002 | 69° | 41° | 55° | — | — |
| 2001 | 76° | 54° | 65° | — | — |
| 2000 | 68° | 44° | 56° | — | — |
| 1999 | 61° | 45° | 53° | 0.05" | — |
| 1998 | 61° | 52° | 56° | — | — |
| 1997 | 76° | 48° | 62° | — | — |
| 1996 | 71° | 43° | 57° | — | — |
| 1995 | 57° | 50° | 54° | 1.98" | — |
| 1994 | 64° | 38° | 51° | — | — |
| 1993 | 71° | 46° | 59° | — | — |
| 1992 | 64° | 49° | 56° | — | — |
| 1991 | 53° | 44° | 49° | 1.7" | — |
| 1990 | 74° | 44° | 59° | — | — |
| 1989 | 71° | 44° | 58° | — | — |
| 1988 | 73° | 67° | 70° | — | — |
| 1987coldest | 55° | 32° | 44° | — | — |
| 1986 | 69° | 42° | 56° | — | — |
| 1985 | 64° | 38° | 51° | — | — |
| 1984 | 78° | 52° | 65° | — | — |
| 1983 | 53° | 46° | 50° | — | — |
| 1982 | 62° | 34° | 48° | — | — |
| 1981 | 58° | 41° | 49° | 0.46" | — |
| 1980 | 70° | 40° | 55° | — | — |
| 1979 | 70° | 38° | 54° | — | — |
| 1978 | 72° | 43° | 57° | — | — |
| 1977 | 70° | 38° | 54° | — | — |
| 1976 | 69° | 35° | 52° | — | — |
| 1975 | 58° | 35° | 46° | — | — |
| 1974 | 71° | 45° | 58° | — | — |
| 1973 | 57° | 37° | 47° | 0.97" | — |
| 1972 | 72° | 39° | 55° | — | — |
| 1971 | 77° | 37° | 57° | — | — |
56 years of data from SANTA ROSA