Weather on April 18
Mission Viejo, CA
55 Years of Data
Avg High
71°F
Avg Low
51°F
Warmest
1999
75°F avg
Coldest
1972
50°F avg
About This Date
April 18th in Mission Viejo, CA typically brings pleasant spring weather, with average highs around 71°F and lows near 51°F. Over 55 years of records, the warmest April 18th was in 1999 (75°F average), while the coldest was 1972 (50°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 9% of April 18th dates historically, with the wettest April 18th recording 1.07" of rain. 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 18th in Mission Viejo, CA? Great weather for outdoor activities.
Warming Trend
1.1°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 63° | 52° | 57° | — | — |
| 2024 | 72° | 48° | 60° | — | — |
| 2023 | 65° | 47° | 56° | — | — |
| 2022 | 78° | 52° | 65° | — | — |
| 2021 | 87° | 49° | 68° | — | — |
| 2020 | 63° | 53° | 58° | — | — |
| 2019 | 87° | 54° | 70° | — | — |
| 2018 | 70° | 49° | 59° | — | — |
| 2017 | 75° | 56° | 65° | — | — |
| 2016 | 88° | 63° | 75° | — | — |
| 2015 | 78° | 55° | 67° | — | — |
| 2014 | 70° | 55° | 62° | — | — |
| 2013 | 78° | 55° | 67° | — | — |
| 2012 | 74° | 51° | 62° | — | — |
| 2011 | 62° | 54° | 58° | — | — |
| 2010 | 77° | 51° | 64° | — | — |
| 2009 | 86° | 53° | 70° | — | — |
| 2008 | 86° | 50° | 68° | — | — |
| 2007 | 67° | 47° | 57° | — | — |
| 2006 | 68° | 47° | 57° | — | — |
| 2005 | 66° | 50° | 58° | — | — |
| 2004 | 66° | 46° | 56° | — | — |
| 2003 | 64° | 47° | 55° | — | — |
| 2002 | 66° | 43° | 54° | — | — |
| 2001 | 71° | 50° | 61° | — | — |
| 2000 | 62° | 49° | 55° | — | — |
| 1999warmest | 91° | 59° | 75° | — | — |
| 1998 | 75° | 50° | 63° | — | — |
| 1997 | 71° | 54° | 62° | — | — |
| 1996 | 70° | 51° | 60° | 0.33" | — |
| 1995 | 56° | 45° | 50° | 0.71" | — |
| 1994 | 85° | 57° | 71° | — | — |
| 1993 | 71° | 56° | 63° | — | — |
| 1992 | 79° | 60° | 69° | — | — |
| 1991 | 68° | 49° | 58° | — | — |
| 1990 | 69° | 54° | 61° | — | — |
| 1989 | 75° | 59° | 67° | — | — |
| 1988 | 66° | 53° | 60° | — | — |
| 1987 | 68° | 57° | 63° | — | — |
| 1986 | 83° | 49° | 66° | — | — |
| 1985 | 66° | 53° | 60° | — | — |
| 1984 | 68° | 54° | 61° | 0.13" | — |
| 1983 | 67° | 54° | 60° | 1.07" | — |
| 1982 | 75° | 48° | 62° | — | — |
| 1981 | 63° | 52° | 57° | 0.69" | — |
| 1980 | 79° | 53° | 66° | — | — |
| 1979 | 64° | 50° | 57° | — | — |
| 1978 | 74° | 48° | 61° | — | — |
| 1977 | 70° | 56° | 63° | — | — |
| 1976 | 67° | 41° | 54° | — | — |
| 1975 | 64° | 45° | 54° | — | — |
| 1974 | 62° | 44° | 53° | — | — |
| 1973 | 67° | 48° | 57° | — | — |
| 1972coldest | 56° | 44° | 50° | — | — |
| 1971 | 67° | 44° | 55° | — | — |
55 years of data from EL TORO MCAS