Weather on May 31
Irvine, CA
55 Years of Data
Avg High
78°F
Avg Low
57°F
Warmest
2025
81°F avg
Coldest
1980
58°F avg
About This Date
May 31st in Irvine, CA typically brings pleasant spring weather, with average highs around 78°F and lows near 57°F. Over 55 years of records, the warmest May 31st was in 2025 (81°F average), while the coldest was 1980 (58°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 31st dates historically. The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.3°F cooler on this date compared to 20-30 years ago.
Planning for May 31st in Irvine, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025warmest | 98° | 64° | 81° | — | — |
| 2024 | 76° | 58° | 67° | — | — |
| 2023 | 63° | 53° | 58° | — | — |
| 2022 | 80° | 54° | 67° | — | — |
| 2021 | 78° | 61° | 69° | — | — |
| 2020 | 76° | 58° | 67° | — | — |
| 2019 | 75° | 60° | 68° | — | — |
| 2018 | 75° | 56° | 65° | 0.33" | — |
| 2017 | 70° | 58° | 64° | — | — |
| 2016 | 80° | 61° | 70° | — | — |
| 2015 | 82° | 58° | 70° | — | — |
| 2014 | 86° | 63° | 74° | — | — |
| 2013 | 83° | 57° | 70° | — | — |
| 2012 | 84° | 53° | 69° | — | — |
| 2011 | 82° | 47° | 64° | — | — |
| 2010 | 81° | 50° | 65° | — | — |
| 2009 | 72° | 63° | 67° | — | — |
| 2008 | 79° | 52° | 65° | — | — |
| 2007 | 70° | 51° | 60° | — | — |
| 2006 | 90° | 56° | 73° | — | — |
| 2005 | 81° | 55° | 68° | — | — |
| 2004 | 91° | 55° | 73° | — | — |
| 2003 | 79° | 57° | 68° | — | — |
| 2002 | 74° | 58° | 66° | — | — |
| 2001 | 78° | 60° | 69° | — | — |
| 2000 | 76° | 60° | 68° | — | — |
| 1999 | 80° | 53° | 67° | — | — |
| 1998 | 80° | 59° | 70° | — | — |
| 1997 | 89° | 64° | 77° | — | — |
| 1996 | 78° | 49° | 63° | — | — |
| 1995 | 83° | 60° | 71° | — | — |
| 1994 | 79° | 59° | 69° | — | — |
| 1993 | 79° | 61° | 70° | — | — |
| 1992 | 84° | 62° | 73° | — | — |
| 1991 | 70° | 47° | 58° | — | — |
| 1990 | 71° | 57° | 64° | — | — |
| 1989 | 76° | 49° | 62° | — | — |
| 1988 | 78° | 47° | 62° | — | — |
| 1987 | 77° | 53° | 65° | — | — |
| 1986 | 75° | 60° | 68° | — | — |
| 1985 | 69° | 58° | 63° | — | — |
| 1984 | 76° | 64° | 70° | — | — |
| 1983 | 66° | 57° | 62° | — | — |
| 1982 | 70° | 55° | 62° | — | — |
| 1981 | 84° | — | — | — | — |
| 1980coldest | 62° | 54° | 58° | — | — |
| 1979 | 73° | 59° | 66° | — | — |
| 1978 | 88° | 59° | 73° | — | — |
| 1977 | 78° | 58° | 68° | — | — |
| 1976 | 69° | 52° | 60° | — | — |
| 1975 | 78° | — | — | — | — |
| 1974 | 71° | 58° | 64° | — | — |
| 1973 | 73° | 59° | 66° | 0.05" | — |
| 1972 | 84° | 56° | 70° | — | — |
| 1971 | 67° | 54° | 60° | 0.1" | — |
55 years of data from IRVINE RCH