Weather on March 21
Downey, CA
55 Years of Data
Avg High
73°F
Avg Low
51°F
Warmest
1989
74°F avg
Coldest
2011
48°F avg
About This Date
March 21st in Downey, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 51°F. Over 56 years of records, the warmest March 21st was in 1989 (74°F average), while the coldest was 2011 (48°F) — a 26°F range across recorded history. Rain or other precipitation has occurred on about 11% of March 21st dates historically, with the wettest March 21st recording 2.03" of rain. The last decade has been 4.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.5°F cooler on this date compared to 20-30 years ago.
Planning for March 21st in Downey, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 84° | 63° | 73° | — | — |
| 2025 | 76° | 53° | 64° | — | — |
| 2024 | 72° | 53° | 62° | — | — |
| 2023 | 55° | 44° | 50° | — | — |
| 2022 | 77° | 51° | 64° | — | — |
| 2021 | 68° | 47° | 57° | — | — |
| 2020 | 69° | 49° | 59° | — | — |
| 2019 | 57° | 48° | 53° | — | — |
| 2018 | 65° | 54° | 59° | — | — |
| 2017 | 65° | 51° | 58° | — | — |
| 2016 | 68° | 52° | 60° | — | — |
| 2015 | 76° | 55° | 65° | — | — |
| 2014 | 69° | 50° | 60° | — | — |
| 2013 | 73° | 49° | 61° | — | — |
| 2012 | 79° | 53° | 66° | — | — |
| 2011coldest | 55° | 41° | 48° | — | — |
| 2010 | 84° | 51° | 68° | — | — |
| 2009 | 80° | 54° | 67° | — | — |
| 2008 | 82° | 53° | 68° | — | — |
| 2007 | 68° | 47° | 57° | — | — |
| 2006 | 59° | 42° | 51° | — | — |
| 2005 | 72° | 50° | 61° | — | — |
| 2004 | 77° | 56° | 66° | — | — |
| 2003 | 78° | 49° | 63° | — | — |
| 2002 | 83° | 49° | 66° | — | — |
| 2001 | 74° | 59° | 66° | — | — |
| 2000 | 75° | 55° | 65° | — | — |
| 1999 | 67° | 46° | 56° | — | — |
| 1998 | 72° | 55° | 63° | — | — |
| 1997 | 93° | 53° | 73° | — | — |
| 1996 | 74° | 56° | 65° | — | — |
| 1995 | 64° | 52° | 58° | 1.12" | — |
| 1994 | 74° | 51° | 62° | — | — |
| 1993 | 69° | 59° | 64° | — | — |
| 1992 | 64° | 54° | 59° | 2.03" | — |
| 1991 | 78° | 42° | 60° | — | — |
| 1990 | 88° | 52° | 70° | — | — |
| 1989warmest | 86° | 62° | 74° | — | — |
| 1988 | 88° | 52° | 70° | — | — |
| 1987 | 68° | 44° | 56° | 0.41" | — |
| 1986 | 84° | 59° | 72° | — | — |
| 1985 | 71° | 51° | 61° | — | — |
| 1984 | 82° | 54° | 68° | — | — |
| 1983 | 62° | 50° | 56° | 1.47" | — |
| 1982 | 72° | 52° | 62° | — | — |
| 1981 | 68° | 48° | 58° | — | — |
| 1980 | 69° | 47° | 58° | — | — |
| 1979 | 62° | 45° | 53° | — | — |
| 1978 | 71° | 63° | 67° | 0.08" | — |
| 1977 | 80° | 47° | 63° | — | — |
| 1976 | 87° | 48° | 68° | — | — |
| 1975 | 62° | 53° | 58° | — | — |
| 1974 | 66° | 49° | 57° | — | — |
| 1973 | 61° | 42° | 51° | 0.81" | — |
| 1972 | 71° | 54° | 62° | — | — |
| 1971 | 70° | 53° | 61° | — | — |
56 years of data from MONTEBELLO