Weather on October 31
Irvine, CA
55 Years of Data
Avg High
77°F
Avg Low
52°F
Warmest
1999
77°F avg
Coldest
1971
53°F avg
About This Date
October 31st in Irvine, CA typically brings pleasant fall weather, with average highs around 77°F and lows near 52°F — a 25°F daily swing. Over 55 years of records, the warmest October 31st was in 1999 (77°F average), while the coldest was 1971 (53°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 7% of October 31st dates historically, with the wettest October 31st recording 1.75" of rain. The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.8°F warmer on this date compared to 20-30 years ago.
Planning for October 31st in Irvine, CA? Great weather for outdoor activities.
Warming Trend
1.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 79° | 52° | 65° | — | — |
| 2024 | 76° | 49° | 62° | — | — |
| 2023 | 82° | 61° | 71° | — | — |
| 2022 | 79° | 56° | 67° | — | — |
| 2021 | 73° | 63° | 68° | — | — |
| 2020 | 84° | 52° | 68° | — | — |
| 2019 | 81° | 57° | 69° | — | — |
| 2018 | 84° | 55° | 70° | — | — |
| 2017 | 69° | 58° | 63° | — | — |
| 2016 | 85° | 61° | 73° | — | — |
| 2015 | 90° | 62° | 76° | — | — |
| 2014 | 76° | 57° | 66° | — | — |
| 2013 | 82° | 61° | 71° | — | — |
| 2012 | 77° | 50° | 64° | — | — |
| 2011 | 80° | 49° | 64° | — | — |
| 2010 | 74° | 45° | 59° | — | — |
| 2009 | 85° | 47° | 66° | — | — |
| 2008 | 87° | 60° | 74° | — | — |
| 2007 | 79° | 52° | 65° | — | — |
| 2006 | 71° | 56° | 63° | — | — |
| 2005 | 85° | 69° | 77° | — | — |
| 2004 | 78° | 49° | 63° | — | — |
| 2003 | 60° | 49° | 54° | — | — |
| 2002 | 71° | 52° | 61° | — | — |
| 2001 | 78° | 55° | 67° | — | — |
| 2000 | 67° | 49° | 58° | — | — |
| 1999warmest | 94° | 60° | 77° | — | — |
| 1998 | 76° | 50° | 63° | — | — |
| 1997 | 92° | 52° | 72° | — | — |
| 1996 | 67° | 45° | 56° | 0.69" | — |
| 1995 | 66° | 54° | 60° | — | — |
| 1994 | 84° | 45° | 64° | — | — |
| 1993 | 79° | 55° | 67° | — | — |
| 1992 | 82° | 46° | 64° | 0.05" | — |
| 1991 | 77° | 43° | 60° | — | — |
| 1990 | 76° | 48° | 62° | — | — |
| 1989 | 79° | 41° | 60° | — | — |
| 1988 | 80° | 43° | 61° | — | — |
| 1987 | 65° | 57° | 61° | 1.75" | — |
| 1986 | 75° | 55° | 65° | — | — |
| 1985 | 74° | 59° | 66° | — | — |
| 1984 | 71° | 54° | 62° | — | — |
| 1983 | 78° | 59° | 69° | — | — |
| 1982 | 72° | 54° | 63° | — | — |
| 1981 | 84° | — | — | — | — |
| 1980 | 81° | 45° | 63° | — | — |
| 1979 | 75° | 43° | 59° | — | — |
| 1978 | 73° | 50° | 62° | — | — |
| 1977 | 75° | 45° | 60° | — | — |
| 1976 | 81° | 54° | 67° | — | — |
| 1975 | 70° | 43° | 56° | 0.23" | — |
| 1974 | 69° | 45° | 57° | — | — |
| 1973 | 91° | 45° | 68° | — | — |
| 1972 | 70° | 41° | 55° | — | — |
| 1971coldest | 70° | 36° | 53° | — | — |
55 years of data from IRVINE RCH