Weather on April 21
Mission Viejo, CA
55 Years of Data
Avg High
73°F
Avg Low
51°F
Warmest
2009
79°F avg
Coldest
2010
50°F avg
About This Date
April 21st in Mission Viejo, CA typically brings pleasant spring weather, with average highs around 73°F and lows near 51°F. Over 55 years of records, the warmest April 21st was in 2009 (79°F average), while the coldest was 2010 (50°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 5% of April 21st dates historically. The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.4°F warmer on this date compared to 20-30 years ago.
Planning for April 21st in Mission Viejo, CA? Great weather for outdoor activities.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 48° | 61° | — | — |
| 2024 | 75° | 52° | 63° | — | — |
| 2023 | 87° | 61° | 74° | — | — |
| 2022 | 70° | 48° | 59° | — | — |
| 2021 | 62° | 54° | 58° | — | — |
| 2020 | 68° | 54° | 61° | — | — |
| 2019 | 62° | 49° | 55° | — | — |
| 2018 | 86° | 52° | 69° | — | — |
| 2017 | 89° | 55° | 72° | — | — |
| 2016 | 81° | 56° | 68° | — | — |
| 2015 | 63° | 54° | 58° | — | — |
| 2014 | 80° | 52° | 66° | — | — |
| 2013 | 79° | 53° | 66° | — | — |
| 2012 | 76° | 53° | 64° | — | — |
| 2011 | 66° | 52° | 59° | — | — |
| 2010coldest | 55° | 45° | 50° | — | — |
| 2009warmest | 98° | 59° | 79° | — | — |
| 2008 | 72° | 46° | 59° | — | — |
| 2007 | 63° | 43° | 53° | — | — |
| 2006 | 69° | 50° | 60° | — | — |
| 2005 | 82° | 47° | 64° | — | — |
| 2004 | 71° | 48° | 60° | — | — |
| 2003 | 64° | 49° | 56° | — | — |
| 2002 | 78° | 47° | 62° | — | — |
| 2001 | 59° | 45° | 52° | — | — |
| 2000 | 63° | 50° | 56° | — | — |
| 1999 | 65° | 52° | 58° | — | — |
| 1998 | 84° | 57° | 71° | — | — |
| 1997 | 79° | 57° | 68° | — | — |
| 1996 | 69° | 48° | 59° | — | — |
| 1995 | 66° | 45° | 55° | — | — |
| 1994 | 66° | 58° | 62° | — | — |
| 1993 | 85° | 58° | 71° | — | — |
| 1992 | 80° | 57° | 69° | — | — |
| 1991 | 68° | 56° | 62° | — | — |
| 1990 | 71° | 55° | 63° | — | — |
| 1989 | 73° | 56° | 64° | — | — |
| 1988 | 59° | 46° | 53° | 0.23" | — |
| 1987 | 91° | 58° | 74° | — | — |
| 1986 | 84° | 55° | 70° | — | — |
| 1985 | 63° | 51° | 57° | — | — |
| 1984 | 82° | 47° | 64° | — | — |
| 1983 | 66° | 53° | 60° | — | — |
| 1982 | 79° | 63° | 71° | — | — |
| 1981 | 79° | 49° | 64° | — | — |
| 1980 | 63° | 52° | 57° | 0.33" | — |
| 1979 | 74° | 50° | 62° | — | — |
| 1978 | 65° | 48° | 56° | — | — |
| 1977 | 81° | 46° | 63° | — | — |
| 1976 | 75° | 51° | 63° | — | — |
| 1975 | 62° | 49° | 55° | — | — |
| 1974 | 76° | 44° | 60° | — | — |
| 1973 | 75° | 43° | 59° | — | — |
| 1972 | 75° | 44° | 60° | — | — |
| 1971 | 63° | 46° | 54° | 0.03" | — |
55 years of data from EL TORO MCAS