Weather on March 15
Santa Rosa, CA
55 Years of Data
Avg High
65°F
Avg Low
43°F
Warmest
2004
67°F avg
Coldest
2002
45°F avg
About This Date
March 15th in Santa Rosa, CA typically brings mild spring weather, with average highs around 65°F and lows near 43°F. Over 56 years of records, the warmest March 15th was in 2004 (67°F average), while the coldest was 2002 (45°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 46% of March 15th dates historically, with the wettest March 15th recording 5.08" of rain. The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.0°F cooler on this date compared to 20-30 years ago.
Planning for March 15th in Santa Rosa, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 84° | 46° | 65° | — | — |
| 2025 | 57° | 45° | 51° | 0.03" | — |
| 2024 | 75° | 56° | 65° | — | — |
| 2023 | 64° | 35° | 50° | — | — |
| 2022 | 67° | 54° | 60° | 0.97" | — |
| 2021 | 57° | 35° | 46° | 0.94" | — |
| 2020 | 56° | 43° | 49° | 1.27" | — |
| 2019 | 71° | 36° | 53° | — | — |
| 2018 | 56° | 36° | 46° | 1.98" | — |
| 2017 | 60° | 48° | 54° | — | — |
| 2016 | 66° | 43° | 54° | — | — |
| 2015 | 66° | 57° | 62° | — | — |
| 2014 | 77° | 52° | 64° | — | — |
| 2013 | 72° | 46° | 59° | — | — |
| 2012 | 60° | 55° | 58° | 0.13" | — |
| 2011 | 56° | 45° | 50° | 2.41" | — |
| 2010 | 74° | 37° | 55° | — | — |
| 2009 | 61° | 49° | 55° | 0.05" | — |
| 2008 | 60° | 38° | 49° | 0.25" | — |
| 2007 | 79° | 41° | 60° | — | — |
| 2006 | 60° | 40° | 50° | 0.3" | — |
| 2005 | 75° | 37° | 56° | — | — |
| 2004warmest | 88° | 46° | 67° | — | — |
| 2003 | 62° | 49° | 55° | 5.08" | — |
| 2002coldest | 56° | 35° | 45° | — | — |
| 2001 | 64° | 43° | 53° | — | — |
| 2000 | 77° | 45° | 61° | — | — |
| 1999 | 59° | 43° | 51° | 0.2" | — |
| 1998 | 70° | 49° | 59° | — | — |
| 1997 | 65° | 44° | 54° | — | — |
| 1996 | 72° | 44° | 58° | — | — |
| 1995 | 66° | 40° | 53° | 0.38" | — |
| 1994 | 67° | 42° | 54° | — | — |
| 1993 | 65° | 52° | 58° | 0.36" | — |
| 1992 | 60° | 51° | 56° | 2.11" | — |
| 1991 | 61° | 40° | 50° | 0.03" | — |
| 1990 | 68° | 45° | 56° | 0.05" | — |
| 1989 | 61° | 39° | 50° | — | — |
| 1988 | 66° | 43° | 54° | — | — |
| 1987 | 58° | 38° | 48° | — | — |
| 1986 | 52° | 41° | 46° | 3.35" | — |
| 1985 | 56° | 43° | 49° | — | — |
| 1984 | 59° | 50° | 55° | 0.99" | — |
| 1983 | 66° | 36° | 51° | 0.36" | — |
| 1982 | 58° | 35° | 46° | 0.05" | — |
| 1981 | 60° | 46° | 53° | 0.1" | — |
| 1980 | 59° | 36° | 47° | 0.08" | — |
| 1979 | 59° | 49° | 54° | 0.1" | — |
| 1978 | 72° | 36° | 54° | — | — |
| 1977 | 53° | 43° | 48° | 4.14" | — |
| 1976 | 71° | 37° | 54° | — | — |
| 1975 | 60° | 41° | 51° | 1.19" | — |
| 1974 | 75° | 45° | 60° | — | — |
| 1973 | 69° | 34° | 51° | — | — |
| 1972 | 85° | 47° | 66° | — | — |
| 1971 | 68° | 43° | 55° | — | — |
56 years of data from SANTA ROSA