Weather on June 21
Irvine, CA
55 Years of Data
Avg High
82°F
Avg Low
58°F
Warmest
2008
93°F avg
Coldest
1975
57°F avg
About This Date
June 21st in Irvine, CA typically brings warm summer weather, with average highs around 82°F and lows near 58°F. Over 55 years of records, the warmest June 21st was in 2008 (93°F average), while the coldest was 1975 (57°F) — a 36°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for June 21st in Irvine, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.7°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 78° | 61° | 69° | — | — |
| 2024 | 86° | 57° | 72° | — | — |
| 2023 | 78° | 50° | 64° | — | — |
| 2022 | 89° | 60° | 75° | — | — |
| 2021 | 82° | 64° | 73° | — | — |
| 2020 | 78° | 52° | 65° | — | — |
| 2019 | 68° | 60° | 64° | — | — |
| 2018 | 85° | 52° | 68° | — | — |
| 2017 | 88° | 65° | 76° | — | — |
| 2016 | 106° | 65° | 85° | — | — |
| 2015 | 89° | 55° | 72° | — | — |
| 2014 | 88° | 69° | 78° | — | — |
| 2013 | 84° | 52° | 68° | — | — |
| 2012 | 81° | 55° | 68° | — | — |
| 2011 | 89° | 54° | 71° | — | — |
| 2010 | 77° | 57° | 67° | — | — |
| 2009 | 79° | 54° | 66° | — | — |
| 2008warmest | 104° | 82° | 93° | — | — |
| 2007 | 88° | 53° | 70° | — | — |
| 2006 | 85° | 59° | 72° | — | — |
| 2005 | 91° | 54° | 72° | — | — |
| 2004 | 78° | 61° | 69° | — | — |
| 2003 | 64° | 55° | 60° | — | — |
| 2002 | 70° | 60° | 65° | — | — |
| 2001 | 82° | 55° | 69° | — | — |
| 2000 | 80° | 61° | 70° | — | — |
| 1999 | 78° | 59° | 69° | — | — |
| 1998 | 83° | 61° | 72° | — | — |
| 1997 | 82° | 62° | 72° | — | — |
| 1996 | 78° | 62° | 70° | — | — |
| 1995 | 77° | 54° | 65° | — | — |
| 1994 | 85° | 55° | 70° | — | — |
| 1993 | 80° | 62° | 71° | — | — |
| 1992 | 79° | 58° | 68° | — | — |
| 1991 | 74° | 55° | 64° | — | — |
| 1990 | 81° | 61° | 71° | — | — |
| 1989 | 86° | 53° | 70° | — | — |
| 1988 | 80° | 51° | 66° | — | — |
| 1987 | 74° | 62° | 68° | — | — |
| 1986 | 81° | 58° | 69° | — | — |
| 1985 | 74° | 59° | 66° | — | — |
| 1984 | 78° | 62° | 70° | — | — |
| 1983 | 71° | 62° | 67° | — | — |
| 1982 | 65° | 57° | 61° | — | — |
| 1981 | 85° | — | — | — | — |
| 1980 | 78° | 56° | 67° | — | — |
| 1979 | 79° | 54° | 66° | — | — |
| 1978 | 90° | 56° | 73° | — | — |
| 1977 | 76° | 60° | 68° | — | — |
| 1976 | 86° | 53° | 70° | — | — |
| 1975coldest | 70° | 45° | 57° | — | — |
| 1974 | 85° | 51° | 68° | — | — |
| 1973 | 100° | 58° | 79° | — | — |
| 1972 | 79° | 60° | 69° | — | — |
| 1971 | 88° | 56° | 72° | — | — |
55 years of data from IRVINE RCH