Weather on March 21
Santa Maria, CA
55 Years of Data
Avg High
65°F
Avg Low
45°F
Warmest
2026
65°F avg
Coldest
1973
45°F avg
About This Date
March 21st in Santa Maria, CA typically brings mild spring weather, with average highs around 65°F and lows near 45°F. Over 56 years of records, the warmest March 21st was in 2026 (65°F average), while the coldest was 1973 (45°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 30% of March 21st dates historically, with the wettest March 21st recording 2.72" of rain. The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.7°F warmer on this date compared to 20-30 years ago.
Planning for March 21st in Santa Maria, CA? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 82° | 49° | 65° | — | — |
| 2025 | 68° | 47° | 57° | — | — |
| 2024 | 66° | 42° | 54° | — | — |
| 2023 | 56° | 47° | 51° | 1.52" | — |
| 2022 | 69° | 43° | 56° | — | — |
| 2021 | 62° | 38° | 50° | — | — |
| 2020 | 66° | 50° | 58° | — | — |
| 2019 | 63° | 47° | 55° | 0.23" | — |
| 2018 | 62° | 56° | 59° | 2.72" | — |
| 2017 | 66° | 55° | 61° | 1.04" | — |
| 2016 | 66° | 55° | 61° | — | — |
| 2015 | 74° | 48° | 61° | — | — |
| 2014 | 65° | 51° | 58° | — | — |
| 2013 | 67° | 47° | 57° | — | — |
| 2012 | 73° | 42° | 58° | — | — |
| 2011 | 59° | 40° | 49° | 0.13" | — |
| 2010 | 65° | 38° | 51° | — | — |
| 2009 | 60° | 49° | 54° | 0.18" | — |
| 2008 | 74° | 42° | 58° | — | — |
| 2007 | 69° | 50° | 60° | — | — |
| 2006 | 58° | 36° | 47° | 0.08" | — |
| 2005 | 67° | 45° | 56° | 0.03" | — |
| 2004 | 63° | 52° | 57° | — | — |
| 2003 | 71° | 43° | 57° | — | — |
| 2002 | 68° | 40° | 54° | — | — |
| 2001 | 55° | 49° | 52° | — | — |
| 2000 | 70° | 36° | 53° | — | — |
| 1999 | 60° | 43° | 51° | — | — |
| 1998 | 69° | 54° | 61° | — | — |
| 1997 | 68° | 45° | 56° | — | — |
| 1996 | 60° | 51° | 56° | — | — |
| 1995 | 59° | 45° | 52° | 0.66" | — |
| 1994 | 65° | 46° | 55° | — | — |
| 1993 | 71° | 49° | 60° | — | — |
| 1992 | 65° | 49° | 57° | 0.03" | — |
| 1991 | 56° | 41° | 48° | 0.05" | — |
| 1990 | 67° | 41° | 54° | — | — |
| 1989 | 79° | 43° | 61° | — | — |
| 1988 | 64° | 40° | 52° | — | — |
| 1987 | 54° | 39° | 46° | 1.3" | — |
| 1986 | 72° | 43° | 57° | — | — |
| 1985 | 65° | 44° | 54° | — | — |
| 1984 | 73° | 50° | 62° | — | — |
| 1983 | 61° | 45° | 53° | 0.61" | — |
| 1982 | 61° | 32° | 46° | — | — |
| 1981 | 63° | 50° | 56° | 0.69" | — |
| 1980 | 59° | 34° | 46° | — | — |
| 1979 | 57° | 50° | 54° | — | — |
| 1978 | 68° | 55° | 62° | 0.05" | — |
| 1977 | 73° | 40° | 56° | — | — |
| 1976 | 79° | 36° | 57° | — | — |
| 1975 | 59° | 34° | 46° | 0.56" | — |
| 1974 | 54° | 50° | 52° | — | — |
| 1973coldest | 53° | 37° | 45° | 0.69" | — |
| 1972 | 65° | 51° | 58° | — | — |
| 1971 | 60° | 44° | 52° | — | — |
56 years of data from SANTA MARIA PUBLIC AP