Weather on October 23
Costa Mesa, CA
55 Years of Data
Avg High
78°F
Avg Low
59°F
Warmest
2007
83°F avg
Coldest
2004
61°F avg
About This Date
October 23rd in Costa Mesa, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 59°F. Over 55 years of records, the warmest October 23rd was in 2007 (83°F average), while the coldest was 2004 (61°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 23rd dates historically, with the wettest October 23rd recording 1.85" of rain. The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 3.3°F warmer on this date compared to 20-30 years ago.
Planning for October 23rd in Costa Mesa, CA? Great weather for outdoor activities.
Warming Trend
0.6°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 73° | 59° | 66° | — | — |
| 2024 | 81° | 59° | 70° | — | — |
| 2023 | 73° | 63° | 68° | — | — |
| 2022 | 73° | 62° | 68° | — | — |
| 2021 | 70° | 61° | 65° | 0.18" | — |
| 2020 | 73° | 67° | 70° | — | — |
| 2019 | 88° | 64° | 76° | — | — |
| 2018 | 73° | 63° | 68° | — | — |
| 2017 | 97° | 61° | 79° | — | — |
| 2016 | 76° | 60° | 68° | 0.56" | — |
| 2015 | 81° | 62° | 71° | — | — |
| 2014 | 85° | 62° | 73° | — | — |
| 2013 | 69° | 62° | 66° | — | — |
| 2012 | 72° | 61° | 66° | 0.13" | — |
| 2011 | 68° | 58° | 63° | — | — |
| 2010 | 73° | 63° | 68° | 0.08" | — |
| 2009 | 84° | 59° | 72° | — | — |
| 2008 | 90° | 59° | 74° | — | — |
| 2007warmest | 99° | 67° | 83° | — | — |
| 2006 | 86° | 58° | 72° | — | — |
| 2005 | 68° | 62° | 65° | — | — |
| 2004coldest | 69° | 54° | 61° | — | — |
| 2003 | 87° | 59° | 73° | — | — |
| 2002 | 67° | 59° | 63° | — | — |
| 2001 | 69° | 58° | 63° | 0.33" | — |
| 2000 | 77° | 60° | 69° | — | — |
| 1999 | 79° | 56° | 67° | — | — |
| 1998 | 82° | 58° | 70° | — | — |
| 1997 | 73° | 63° | 68° | — | — |
| 1996 | 75° | 58° | 66° | — | — |
| 1995 | 81° | 53° | 67° | — | — |
| 1994 | 75° | 52° | 63° | — | — |
| 1993 | 83° | 56° | 69° | — | — |
| 1992 | 89° | 69° | 79° | 0.03" | — |
| 1991 | 74° | 61° | 67° | — | — |
| 1990 | 88° | 56° | 72° | — | — |
| 1989 | 74° | 63° | 68° | — | — |
| 1988 | 73° | 60° | 67° | — | — |
| 1987 | 74° | 63° | 68° | 1.85" | — |
| 1986 | 76° | 56° | 66° | — | — |
| 1985 | 78° | 52° | 65° | — | — |
| 1984 | 80° | 52° | 66° | — | — |
| 1983 | 83° | 58° | 70° | — | — |
| 1982 | 96° | 64° | 80° | — | — |
| 1981 | 82° | 56° | 69° | — | — |
| 1980 | 80° | 55° | 68° | — | — |
| 1979 | 76° | 55° | 65° | — | — |
| 1978 | 88° | 56° | 72° | — | — |
| 1977 | 77° | 57° | 67° | — | — |
| 1976 | 74° | 60° | 67° | — | — |
| 1975 | 74° | 51° | 62° | — | — |
| 1974 | 69° | 61° | 65° | — | — |
| 1973 | 72° | 60° | 66° | 0.05" | — |
| 1972 | 76° | 56° | 66° | — | — |
| 1971 | 81° | 50° | 65° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP