Weather on March 21
Corona, CA
55 Years of Data
Avg High
72°F
Avg Low
45°F
Warmest
2026
71°F avg
Coldest
2011
48°F avg
About This Date
March 21st in Corona, CA typically brings pleasant spring weather, with average highs around 72°F and lows near 45°F — a 27°F daily swing. Over 46 years of records, the warmest March 21st was in 2026 (71°F average), while the coldest was 2011 (48°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 15% of March 21st dates historically, with the wettest March 21st recording 2.74" of rain. The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.6°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Corona, CA? Great weather for outdoor activities.
Warming Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 90° | 52° | 71° | — | — |
| 2025 | 79° | 40° | 59° | — | — |
| 2024 | 75° | 49° | 62° | — | — |
| 2023 | 61° | 46° | 53° | 2.74" | — |
| 2022 | 84° | 41° | 63° | — | — |
| 2021 | 67° | 38° | 52° | — | — |
| 2020 | 66° | 43° | 54° | — | — |
| 2019 | 60° | 47° | 53° | 0.05" | — |
| 2018 | 72° | 45° | 58° | — | — |
| 2017 | 66° | 44° | 55° | 0.3" | — |
| 2016 | 73° | 43° | 58° | — | — |
| 2015 | 79° | 45° | 62° | — | — |
| 2014 | 70° | 46° | 58° | — | — |
| 2013 | 73° | 42° | 58° | — | — |
| 2012 | 80° | 46° | 63° | — | — |
| 2011coldest | 54° | 42° | 48° | — | — |
| 2010 | 83° | 53° | 68° | — | — |
| 2009 | 64° | 53° | 59° | — | — |
| 2008 | 86° | 48° | 67° | — | — |
| 2007 | 66° | 48° | 57° | — | — |
| 2006 | 62° | 44° | 53° | — | — |
| 2005 | 71° | 48° | 60° | — | — |
| 2004 | 78° | 53° | 66° | — | — |
| 2003 | 79° | 46° | 62° | — | — |
| 2002 | 90° | 48° | 69° | — | — |
| 2001 | 76° | 47° | 61° | — | — |
| 2000 | 73° | 43° | 58° | — | — |
| 1999 | 68° | 41° | 55° | — | — |
| 1988 | 86° | 47° | 66° | — | — |
| 1987 | 57° | 42° | 50° | 0.53" | — |
| 1986 | 86° | 45° | 65° | — | — |
| 1985 | 70° | 45° | 57° | — | — |
| 1984 | 79° | 48° | 63° | — | — |
| 1983 | 62° | 45° | 53° | 0.66" | — |
| 1982 | 70° | 39° | 54° | — | — |
| 1981 | 66° | 42° | 54° | — | — |
| 1980 | 69° | 42° | 56° | — | — |
| 1979 | 59° | 46° | 53° | 0.18" | — |
| 1978 | 67° | 51° | 59° | 0.05" | — |
| 1977 | 85° | 43° | 64° | — | — |
| 1976 | 86° | 44° | 65° | — | — |
| 1975 | 65° | 48° | 56° | — | — |
| 1974 | 68° | 48° | 58° | — | — |
| 1973 | 60° | 39° | 50° | — | — |
| 1972 | 78° | 42° | 60° | — | — |
| 1971 | 70° | 40° | 55° | — | — |
46 years of data from CORONA CALIFORNIA