Weather on May 21
Irvine, CA
55 Years of Data
Avg High
75°F
Avg Low
54°F
Warmest
1988
73°F avg
Coldest
1975
53°F avg
About This Date
May 21st in Irvine, CA typically brings pleasant spring weather, with average highs around 75°F and lows near 54°F. Over 55 years of records, the warmest May 21st was in 1988 (73°F average), while the coldest was 1975 (53°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 5% of May 21st dates historically, with the wettest May 21st recording 0.56" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for May 21st in Irvine, CA? Great weather for outdoor activities.
Warming Trend
0.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 89° | 56° | 72° | — | — |
| 2024 | 74° | 56° | 65° | — | — |
| 2023 | 76° | 55° | 65° | — | — |
| 2022 | 70° | 57° | 63° | — | — |
| 2021 | 70° | 55° | 62° | — | — |
| 2020 | 87° | 52° | 69° | — | — |
| 2019 | 67° | 54° | 60° | — | — |
| 2018 | 68° | 54° | 61° | 0.56" | — |
| 2017 | 85° | 59° | 72° | — | — |
| 2016 | 70° | 60° | 65° | — | — |
| 2015 | 72° | 57° | 64° | — | — |
| 2014 | 77° | 56° | 66° | — | — |
| 2013 | 85° | 56° | 70° | — | — |
| 2012 | 86° | 54° | 70° | — | — |
| 2011 | 79° | 64° | 71° | — | — |
| 2010 | 79° | 48° | 63° | — | — |
| 2009 | 84° | 53° | 69° | — | — |
| 2008 | 75° | 56° | 65° | — | — |
| 2007 | 62° | 53° | 58° | — | — |
| 2006 | 67° | 53° | 60° | — | — |
| 2005 | 91° | 55° | 73° | — | — |
| 2004 | 75° | 58° | 66° | — | — |
| 2003 | 83° | 52° | 67° | — | — |
| 2002 | 63° | 47° | 55° | — | — |
| 2001 | 73° | 50° | 62° | — | — |
| 2000 | 80° | 51° | 66° | — | — |
| 1999 | 68° | 59° | 64° | — | — |
| 1998 | 79° | 54° | 66° | — | — |
| 1997 | 82° | 65° | 73° | — | — |
| 1996 | 78° | 55° | 67° | — | — |
| 1995 | 69° | 56° | 62° | — | — |
| 1994 | 76° | 46° | 61° | — | — |
| 1993 | 77° | 57° | 67° | — | — |
| 1992 | 76° | 52° | 64° | — | — |
| 1991 | 66° | 54° | 60° | — | — |
| 1990 | 75° | 50° | 63° | — | — |
| 1989 | 80° | 48° | 64° | — | — |
| 1988warmest | 86° | 61° | 73° | — | — |
| 1987 | 66° | 52° | 59° | — | — |
| 1986 | 72° | 58° | 65° | — | — |
| 1985 | 75° | 58° | 66° | — | — |
| 1984 | 74° | 50° | 62° | — | — |
| 1983 | 76° | — | — | — | — |
| 1982 | — | 58° | — | — | — |
| 1981 | 79° | 47° | 63° | — | — |
| 1980 | 71° | 56° | 63° | 0.13" | — |
| 1979 | 74° | 60° | 67° | — | — |
| 1978 | 80° | 58° | 69° | — | — |
| 1977 | 81° | 51° | 66° | — | — |
| 1976 | 73° | 52° | 62° | — | — |
| 1975coldest | 64° | 42° | 53° | 0.08" | — |
| 1974 | 77° | 45° | 61° | — | — |
| 1973 | 67° | 59° | 63° | — | — |
| 1972 | 67° | 42° | 54° | — | — |
| 1971 | 69° | 52° | 60° | — | — |
55 years of data from IRVINE RCH