Weather on April 21
Norwalk, CA
55 Years of Data
Avg High
75°F
Avg Low
54°F
Warmest
2009
78°F avg
Coldest
1971
55°F avg
About This Date
April 21st in Norwalk, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 54°F. Over 55 years of records, the warmest April 21st was in 2009 (78°F average), while the coldest was 1971 (55°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 7% of April 21st dates historically. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Norwalk, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 54° | 64° | — | — |
| 2024 | 76° | 55° | 65° | — | — |
| 2023 | 90° | 54° | 72° | — | — |
| 2022 | 72° | 51° | 61° | — | — |
| 2021 | 69° | 59° | 64° | — | — |
| 2020 | 74° | 55° | 64° | — | — |
| 2019 | 71° | 54° | 62° | — | — |
| 2018 | 89° | 53° | 71° | — | — |
| 2017 | 91° | 56° | 73° | — | — |
| 2016 | 87° | 57° | 72° | — | — |
| 2015 | 69° | 59° | 64° | — | — |
| 2014 | 81° | 59° | 70° | — | — |
| 2013 | 80° | 58° | 69° | — | — |
| 2012 | 78° | 62° | 70° | — | — |
| 2011 | 72° | 55° | 63° | — | — |
| 2010 | 63° | 49° | 56° | 0.18" | — |
| 2009warmest | 94° | 62° | 78° | — | — |
| 2008 | 71° | 50° | 61° | — | — |
| 2007 | 65° | 46° | 55° | — | — |
| 2006 | 70° | 56° | 63° | — | — |
| 2005 | 79° | 50° | 64° | — | — |
| 2004 | 70° | 57° | 63° | — | — |
| 2003 | 66° | 53° | 60° | — | — |
| 2002 | 79° | 49° | 64° | — | — |
| 2001 | 64° | 50° | 57° | 0.2" | — |
| 2000 | 67° | 54° | 60° | — | — |
| 1999 | 69° | 56° | 62° | — | — |
| 1998 | 86° | 57° | 72° | — | — |
| 1997 | 84° | 60° | 72° | — | — |
| 1996 | 71° | 51° | 61° | — | — |
| 1995 | 69° | 46° | 58° | — | — |
| 1994 | 68° | 57° | 63° | — | — |
| 1993 | 83° | 56° | 69° | — | — |
| 1992 | 76° | 59° | 67° | — | — |
| 1991 | 69° | 55° | 62° | 0.03" | — |
| 1990 | 71° | 56° | 63° | — | — |
| 1989 | 74° | 59° | 66° | — | — |
| 1988 | 64° | 50° | 57° | — | — |
| 1987 | 94° | 55° | 74° | — | — |
| 1986 | 84° | 56° | 70° | — | — |
| 1985 | 64° | 49° | 56° | — | — |
| 1984 | 80° | 47° | 63° | — | — |
| 1983 | 70° | 55° | 62° | 0.2" | — |
| 1982 | 84° | 60° | 72° | — | — |
| 1981 | 75° | 50° | 63° | — | — |
| 1980 | 64° | 54° | 59° | — | — |
| 1979 | 80° | 50° | 65° | — | — |
| 1978 | 70° | 53° | 61° | — | — |
| 1977 | 79° | 50° | 64° | — | — |
| 1976 | 68° | 52° | 60° | — | — |
| 1975 | 64° | 54° | 59° | — | — |
| 1974 | 79° | 50° | 64° | — | — |
| 1973 | 81° | 44° | 62° | — | — |
| 1972 | 79° | 48° | 63° | — | — |
| 1971coldest | 66° | 45° | 55° | — | — |
55 years of data from FULLERTON MUNI AP