Weather on October 12
Costa Mesa, CA
55 Years of Data
Avg High
78°F
Avg Low
60°F
Warmest
2015
81°F avg
Coldest
1981
61°F avg
About This Date
October 12th in Costa Mesa, CA typically brings pleasant fall weather, with average highs around 78°F and lows near 60°F. Over 55 years of records, the warmest October 12th was in 2015 (81°F average), while the coldest was 1981 (61°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 9% of October 12th dates historically, with the wettest October 12th recording 1.32" of rain. The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.6°F warmer on this date compared to 20-30 years ago.
Planning for October 12th in Costa Mesa, CA? Great weather for outdoor activities.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 75° | 59° | 67° | — | — |
| 2024 | 73° | 60° | 67° | — | — |
| 2023 | 77° | 61° | 69° | — | — |
| 2022 | 78° | 69° | 74° | 0.23" | — |
| 2021 | 73° | 57° | 65° | — | — |
| 2020 | 90° | 63° | 76° | — | — |
| 2019 | 80° | 57° | 69° | — | — |
| 2018 | 78° | 61° | 69° | 1.32" | — |
| 2017 | 75° | 63° | 69° | — | — |
| 2016 | 70° | 59° | 64° | — | — |
| 2015warmest | 91° | 71° | 81° | — | — |
| 2014 | 78° | 69° | 74° | — | — |
| 2013 | 72° | 56° | 64° | — | — |
| 2012 | 74° | 59° | 66° | 0.03" | — |
| 2011 | 99° | 61° | 80° | — | — |
| 2010 | 79° | 68° | 73° | — | — |
| 2009 | 69° | 60° | 65° | — | — |
| 2008 | 75° | 51° | 63° | — | — |
| 2007 | 70° | 58° | 64° | 0.08" | — |
| 2006 | 72° | 57° | 64° | — | — |
| 2005 | 73° | 58° | 65° | — | — |
| 2004 | 76° | 63° | 69° | — | — |
| 2003 | 81° | 61° | 71° | — | — |
| 2002 | 71° | 58° | 64° | — | — |
| 2001 | 79° | 59° | 69° | — | — |
| 2000 | 68° | 55° | 62° | — | — |
| 1999 | 88° | 58° | 73° | — | — |
| 1998 | 79° | 56° | 67° | — | — |
| 1997 | 82° | 50° | 66° | — | — |
| 1996 | 77° | 57° | 67° | — | — |
| 1995 | 79° | 64° | 71° | — | — |
| 1994 | 79° | 60° | 69° | — | — |
| 1993 | 82° | 66° | 74° | — | — |
| 1992 | 78° | 61° | 69° | — | — |
| 1991 | 88° | 64° | 76° | — | — |
| 1990 | 81° | 59° | 70° | — | — |
| 1989 | 79° | 60° | 69° | — | — |
| 1988 | 75° | 63° | 69° | — | — |
| 1987 | 70° | 64° | 67° | 0.13" | — |
| 1986 | 78° | 59° | 69° | — | — |
| 1985 | 75° | 54° | 64° | — | — |
| 1984 | 79° | 62° | 70° | — | — |
| 1983 | 96° | 62° | 79° | — | — |
| 1982 | 90° | 55° | 72° | — | — |
| 1981coldest | 68° | 54° | 61° | — | — |
| 1980 | 76° | 62° | 69° | — | — |
| 1979 | 76° | 56° | 66° | — | — |
| 1978 | 86° | 58° | 72° | — | — |
| 1977 | 82° | 58° | 70° | — | — |
| 1976 | 79° | 62° | 70° | — | — |
| 1975 | 72° | 53° | 62° | — | — |
| 1974 | 76° | 58° | 67° | — | — |
| 1973 | 81° | 51° | 66° | — | — |
| 1972 | 79° | 57° | 68° | — | — |
| 1971 | 89° | 58° | 73° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP