Weather on October 30
Costa Mesa, CA
55 Years of Data
Avg High
76°F
Avg Low
55°F
Warmest
2015
75°F avg
Coldest
1971
53°F avg
About This Date
October 30th in Costa Mesa, CA typically brings pleasant fall weather, with average highs around 76°F and lows near 55°F. Over 55 years of records, the warmest October 30th was in 2015 (75°F average), while the coldest was 1971 (53°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 15% of October 30th dates historically, with the wettest October 30th recording 2.49" of rain. The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 4.7°F warmer on this date compared to 20-30 years ago.
Planning for October 30th in Costa Mesa, CA? Great weather for outdoor activities.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 83° | 60° | 71° | — | — |
| 2024 | 74° | 55° | 64° | — | — |
| 2023 | 87° | 61° | 74° | — | — |
| 2022 | 79° | 57° | 68° | — | — |
| 2021 | 70° | 61° | 65° | — | — |
| 2020 | 80° | 56° | 68° | — | — |
| 2019 | 80° | 55° | 68° | — | — |
| 2018 | 73° | 61° | 67° | — | — |
| 2017 | 72° | 64° | 68° | — | — |
| 2016 | 69° | 62° | 66° | 0.03" | — |
| 2015warmest | 87° | 62° | 75° | — | — |
| 2014 | 79° | 62° | 70° | — | — |
| 2013 | 70° | 53° | 61° | — | — |
| 2012 | 76° | 55° | 65° | — | — |
| 2011 | 77° | 51° | 64° | — | — |
| 2010 | 72° | 63° | 67° | 0.63" | — |
| 2009 | 72° | 50° | 61° | — | — |
| 2008 | 87° | 56° | 71° | 0.03" | — |
| 2007 | 68° | 57° | 63° | — | — |
| 2006 | 69° | 57° | 63° | — | — |
| 2005 | 74° | 53° | 63° | — | — |
| 2004 | 73° | 51° | 62° | — | — |
| 2003 | 69° | 57° | 63° | — | — |
| 2002 | 67° | 55° | 61° | — | — |
| 2001 | 72° | 57° | 64° | — | — |
| 2000 | 66° | 54° | 60° | 0.03" | — |
| 1999 | 89° | 54° | 71° | — | — |
| 1998 | 71° | 52° | 61° | — | — |
| 1997 | 83° | 54° | 68° | — | — |
| 1996 | 64° | 53° | 59° | 2.49" | — |
| 1995 | 75° | 64° | 70° | — | — |
| 1994 | 72° | 51° | 61° | — | — |
| 1993 | 84° | 54° | 69° | — | — |
| 1992 | 68° | 67° | 67° | 1.14" | — |
| 1991 | 73° | 49° | 61° | — | — |
| 1990 | 80° | 55° | 68° | — | — |
| 1989 | 83° | 62° | 72° | — | — |
| 1988 | 78° | 54° | 66° | — | — |
| 1987 | 74° | 56° | 65° | — | — |
| 1986 | 76° | 57° | 66° | — | — |
| 1985 | 71° | 58° | 64° | — | — |
| 1984 | 73° | 53° | 63° | — | — |
| 1983 | 79° | 62° | 70° | — | — |
| 1982 | 75° | 59° | 67° | 0.1" | — |
| 1981 | 79° | 48° | 63° | — | — |
| 1980 | 88° | 52° | 70° | — | — |
| 1979 | 79° | 49° | 64° | — | — |
| 1978 | 69° | 61° | 65° | 0.2" | — |
| 1977 | 74° | 54° | 64° | — | — |
| 1976 | 74° | 51° | 62° | — | — |
| 1975 | 75° | 50° | 63° | — | — |
| 1974 | 68° | 50° | 59° | — | — |
| 1973 | 93° | 50° | 72° | — | — |
| 1972 | 71° | 50° | 61° | — | — |
| 1971coldest | 70° | 37° | 53° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP