Weather on May 31
Mission Viejo, CA
55 Years of Data
Avg High
75°F
Avg Low
56°F
Warmest
2025
75°F avg
Coldest
2023
57°F avg
About This Date
May 31st in Mission Viejo, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 56°F. Over 55 years of records, the warmest May 31st was in 2025 (75°F average), while the coldest was 2023 (57°F) — a 18°F range across recorded history. Rain or other precipitation has occurred on about 2% of May 31st dates historically. The last decade has been 3.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 3.7°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in Mission Viejo, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 89° | 60° | 75° | — | — |
| 2024 | 72° | 54° | 63° | — | — |
| 2023coldest | 61° | 54° | 57° | — | — |
| 2022 | 75° | 52° | 63° | — | — |
| 2021 | 73° | 56° | 64° | — | — |
| 2020 | 80° | 55° | 68° | — | — |
| 2019 | 72° | 55° | 63° | — | — |
| 2018 | 71° | 54° | 62° | — | — |
| 2017 | 65° | 56° | 60° | — | — |
| 2016 | 72° | 55° | 63° | — | — |
| 2015 | 75° | 57° | 66° | — | — |
| 2014 | 81° | 55° | 68° | — | — |
| 2013 | 78° | 59° | 69° | — | — |
| 2012 | 79° | 55° | 67° | — | — |
| 2011 | 78° | 51° | 65° | — | — |
| 2010 | 74° | 51° | 62° | — | — |
| 2009 | 69° | 56° | 62° | — | — |
| 2008 | 74° | 52° | 63° | — | — |
| 2007 | 74° | 54° | 64° | — | — |
| 2006 | 86° | 57° | 72° | — | — |
| 2005 | 81° | 55° | 68° | — | — |
| 2004 | 89° | 58° | 73° | — | — |
| 2003 | 77° | 56° | 66° | — | — |
| 2002 | 80° | 56° | 68° | — | — |
| 2001 | 83° | 57° | 70° | — | — |
| 2000 | 77° | 58° | 67° | — | — |
| 1999 | 77° | 52° | 64° | — | — |
| 1998 | 75° | 55° | 65° | — | — |
| 1997 | 81° | 63° | 72° | — | — |
| 1996 | 73° | 51° | 62° | — | — |
| 1995 | 78° | 58° | 68° | — | — |
| 1994 | 75° | 60° | 68° | — | — |
| 1993 | 79° | 62° | 70° | — | — |
| 1992 | 83° | 63° | 73° | — | — |
| 1991 | 70° | 52° | 61° | — | — |
| 1990 | 70° | 57° | 63° | — | — |
| 1989 | 76° | 54° | 65° | — | — |
| 1988 | 72° | 48° | 60° | — | — |
| 1987 | 79° | 52° | 65° | — | — |
| 1986 | 76° | 61° | 68° | — | — |
| 1985 | 70° | 56° | 63° | — | — |
| 1984 | 77° | 63° | 70° | — | — |
| 1983 | 67° | 59° | 63° | — | — |
| 1982 | 70° | 55° | 62° | — | — |
| 1981 | 81° | 65° | 73° | — | — |
| 1980 | 62° | 54° | 58° | — | — |
| 1979 | 70° | 60° | 65° | — | — |
| 1978 | 74° | 59° | 66° | — | — |
| 1977 | 80° | 58° | 69° | — | — |
| 1976 | 75° | 52° | 63° | — | — |
| 1975 | 75° | 57° | 66° | — | — |
| 1974 | 69° | 54° | 61° | — | — |
| 1973 | 65° | 57° | 61° | 0.18" | — |
| 1972 | 83° | 57° | 70° | — | — |
| 1971 | 70° | 56° | 63° | — | — |
55 years of data from EL TORO MCAS