Weather on March 21
Santa Clarita, CA
55 Years of Data
Avg High
70°F
Avg Low
44°F
Warmest
2026
75°F avg
Coldest
1973
44°F avg
About This Date
March 21st in Santa Clarita, CA typically brings pleasant spring weather, with average highs around 70°F and lows near 44°F — a 26°F daily swing. Over 55 years of records, the warmest March 21st was in 2026 (75°F average), while the coldest was 1973 (44°F) — a 31°F range across recorded history. Rain or other precipitation has occurred on about 7% of March 21st dates historically, with the wettest March 21st recording 1.19" of rain. The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Santa Clarita, CA? Great weather for outdoor activities.
Warming Trend
1.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 89° | 60° | 75° | — | — |
| 2025 | 79° | 49° | 64° | — | — |
| 2024 | 73° | 47° | 60° | — | — |
| 2023 | 54° | 42° | 48° | — | — |
| 2022 | 80° | 53° | 67° | — | — |
| 2021 | 69° | 40° | 54° | — | — |
| 2020 | 63° | 46° | 54° | — | — |
| 2019 | 55° | 44° | 50° | — | — |
| 2018 | 57° | 49° | 53° | — | — |
| 2017 | 57° | 50° | 54° | — | — |
| 2016 | 69° | 46° | 58° | — | — |
| 2015 | 77° | 51° | 64° | — | — |
| 2014 | 69° | 47° | 58° | — | — |
| 2013 | 81° | 55° | 68° | — | — |
| 2012 | 81° | 44° | 62° | — | — |
| 2011 | 52° | 40° | 46° | — | — |
| 2010 | 78° | 49° | 63° | — | — |
| 2009 | 61° | 48° | 54° | — | — |
| 2008 | 83° | 48° | 65° | — | — |
| 2007 | 65° | 45° | 55° | — | — |
| 2006 | 57° | 37° | 47° | — | — |
| 2005 | 67° | 55° | 61° | — | — |
| 2004 | 88° | 51° | 69° | — | — |
| 2003 | 80° | 46° | 63° | — | — |
| 2002 | 81° | 51° | 66° | — | — |
| 2001 | 79° | 51° | 65° | — | — |
| 2000 | 71° | 49° | 60° | — | — |
| 1999 | 64° | 45° | 54° | — | — |
| 1998 | 69° | 49° | 59° | — | — |
| 1997 | 84° | 47° | 65° | — | — |
| 1996 | 76° | 51° | 63° | — | — |
| 1995 | 57° | 43° | 50° | — | — |
| 1994 | 72° | 44° | 58° | — | — |
| 1993 | 82° | 45° | 63° | — | — |
| 1992 | 62° | 49° | 55° | 0.58" | — |
| 1991 | 56° | 35° | 45° | — | — |
| 1990 | 87° | 49° | 68° | — | — |
| 1989 | 77° | 38° | 57° | — | — |
| 1988 | 85° | 36° | 60° | — | — |
| 1987 | 64° | 30° | 47° | — | — |
| 1986 | 79° | 39° | 59° | — | — |
| 1985 | 68° | 35° | 52° | — | — |
| 1984 | 88° | 44° | 66° | — | — |
| 1983 | 58° | 40° | 49° | 1.19" | — |
| 1982 | 69° | 27° | 48° | — | — |
| 1981 | 58° | 37° | 47° | — | — |
| 1979 | 57° | 36° | 46° | — | — |
| 1978 | 68° | 45° | 56° | 0.58" | — |
| 1977 | 74° | 35° | 54° | — | — |
| 1976 | 72° | 42° | 57° | — | — |
| 1975 | 67° | 41° | 54° | — | — |
| 1974 | 59° | 39° | 49° | — | — |
| 1973coldest | 57° | 30° | 44° | 0.38" | — |
| 1972 | 75° | 42° | 59° | — | — |
| 1971 | 75° | 33° | 54° | — | — |
55 years of data from SAUGUS CALIFORNIA