Weather on March 21
Berkeley, CA
55 Years of Data
Avg High
63°F
Avg Low
47°F
Warmest
2026
67°F avg
Coldest
1975
46°F avg
About This Date
March 21st in Berkeley, CA typically brings mild spring weather, with average highs around 63°F and lows near 47°F. Over 56 years of records, the warmest March 21st was in 2026 (67°F average), while the coldest was 1975 (46°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 34% of March 21st dates historically, with the wettest March 21st recording 3.99" of rain. The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.2°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Berkeley, 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 |
|---|---|---|---|---|---|
| 2026warmest | 79° | 56° | 67° | — | — |
| 2025 | 64° | 46° | 55° | — | — |
| 2024 | 68° | 51° | 60° | — | — |
| 2023 | 55° | 44° | 50° | — | — |
| 2022 | 72° | 46° | 59° | — | — |
| 2021 | 64° | 45° | 54° | — | — |
| 2020 | 65° | 46° | 55° | — | — |
| 2019 | 60° | 42° | 51° | — | — |
| 2018 | 58° | 51° | 54° | 1.73" | — |
| 2017 | 61° | 54° | 57° | 2.79" | — |
| 2016 | 65° | 49° | 57° | 0.41" | — |
| 2015 | 67° | 51° | 59° | — | — |
| 2014 | 70° | 46° | 58° | — | — |
| 2013 | 60° | 40° | 50° | — | — |
| 2012 | 64° | 46° | 55° | — | — |
| 2011 | 57° | 41° | 49° | — | — |
| 2010 | 66° | 47° | 56° | — | — |
| 2009 | 66° | 48° | 57° | 0.28" | — |
| 2008 | 63° | 39° | 51° | — | — |
| 2007 | 62° | 41° | 52° | 0.05" | — |
| 2006 | 52° | 41° | 46° | 0.2" | — |
| 2005 | 65° | 51° | 58° | 1.65" | — |
| 2004 | 82° | 50° | 66° | — | — |
| 2003 | 65° | 44° | 54° | — | — |
| 2002 | 70° | 45° | 57° | — | — |
| 2001 | 77° | 50° | 64° | — | — |
| 2000 | 67° | 51° | 59° | — | — |
| 1999 | 59° | 48° | 54° | 0.13" | — |
| 1998 | 59° | 52° | 55° | 0.18" | — |
| 1997 | 71° | 57° | 64° | — | — |
| 1996 | 60° | 49° | 54° | — | — |
| 1995 | 53° | 44° | 49° | 0.56" | — |
| 1994 | 60° | 49° | 54° | — | — |
| 1993 | 66° | 55° | 61° | — | — |
| 1992 | 67° | 56° | 61° | — | — |
| 1991 | 58° | 49° | 53° | 0.03" | — |
| 1990 | 64° | 50° | 57° | — | — |
| 1989 | 64° | 42° | 53° | — | — |
| 1988 | 67° | 49° | 58° | — | — |
| 1987 | 52° | 41° | 46° | 0.56" | — |
| 1986 | 63° | 51° | 57° | — | — |
| 1985 | 58° | 41° | 49° | — | — |
| 1984 | 65° | 45° | 55° | — | — |
| 1983 | 57° | 42° | 50° | 0.28" | — |
| 1982 | 59° | 40° | 49° | — | — |
| 1981 | 62° | 47° | 54° | 0.71" | — |
| 1980 | 61° | 46° | 53° | 0.08" | — |
| 1979 | 57° | 52° | 54° | 0.03" | — |
| 1978 | 62° | 54° | 58° | 2.18" | — |
| 1977 | 69° | 44° | 57° | — | — |
| 1976 | 70° | 49° | 59° | — | — |
| 1975coldest | 50° | 43° | 46° | 3.99" | — |
| 1974 | 55° | 50° | 53° | — | — |
| 1973 | 52° | 43° | 47° | 0.56" | — |
| 1972 | 59° | 49° | 54° | — | — |
| 1971 | 65° | 49° | 57° | — | — |
56 years of data from BERKELEY