Weather on September 24
Costa Mesa, CA
55 Years of Data
About This Date
September 24th in Costa Mesa, CA typically brings warm fall weather, with average highs around 82°F and lows near 63°F. Over 55 years of records, the warmest September 24th was in 1978 (85°F average), while the coldest was 1986 (63°F) — a 22°F range across recorded history. Rain or other precipitation has occurred on about 4% of September 24th dates historically, with the wettest September 24th recording 0.5" of rain. Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for September 24th in Costa Mesa, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 66° | 74° | — | — |
| 2024 | 75° | 64° | 70° | — | — |
| 2023 | 77° | 63° | 70° | — | — |
| 2022 | 89° | 70° | 79° | — | — |
| 2021 | 77° | 64° | 71° | 0.1" | — |
| 2020 | 82° | 64° | 73° | — | — |
| 2019 | 84° | 65° | 74° | — | — |
| 2018 | 74° | 66° | 70° | — | — |
| 2017 | 79° | 57° | 68° | — | — |
| 2016 | 84° | 60° | 72° | — | — |
| 2015 | 86° | 69° | 78° | — | — |
| 2014 | 90° | 68° | 79° | — | — |
| 2013 | 83° | 63° | 73° | — | — |
| 2012 | 84° | 68° | 76° | — | — |
| 2011 | 72° | 64° | 68° | — | — |
| 2010 | 89° | 63° | 76° | — | — |
| 2009 | 91° | 64° | 78° | — | — |
| 2008 | 83° | 64° | 73° | — | — |
| 2007 | 75° | 58° | 66° | — | — |
| 2006 | 83° | 60° | 71° | — | — |
| 2005 | 74° | 61° | 67° | — | — |
| 2004 | 82° | 62° | 72° | — | — |
| 2003 | 73° | 64° | 69° | — | — |
| 2002 | 81° | 63° | 72° | — | — |
| 2001 | 91° | 60° | 76° | — | — |
| 2000 | 79° | 59° | 69° | — | — |
| 1999 | 73° | 62° | 68° | — | — |
| 1998 | 76° | 60° | 68° | — | — |
| 1997 | 99° | 66° | 82° | — | — |
| 1996 | 79° | 64° | 71° | — | — |
| 1995 | 83° | 64° | 73° | — | — |
| 1994 | 78° | 63° | 70° | — | — |
| 1993 | 82° | 58° | 70° | — | — |
| 1992 | 94° | 67° | 80° | — | — |
| 1991 | 96° | 66° | 81° | — | — |
| 1990 | 79° | 62° | 70° | — | — |
| 1989 | 84° | 58° | 71° | — | — |
| 1988 | 71° | 64° | 68° | — | — |
| 1987 | 82° | 65° | 73° | — | — |
| 1986coldest | 68° | 58° | 63° | 0.5" | — |
| 1985 | 91° | 61° | 76° | — | — |
| 1984 | 79° | 65° | 72° | — | — |
| 1983 | 81° | 63° | 72° | — | — |
| 1982 | 93° | 70° | 81° | — | — |
| 1981 | 80° | 64° | 72° | — | — |
| 1980 | 81° | 59° | 70° | — | — |
| 1979 | 82° | 67° | 74° | — | — |
| 1978warmest | 104° | 67° | 85° | — | — |
| 1977 | 85° | 59° | 72° | — | — |
| 1976 | 73° | 67° | 70° | — | — |
| 1975 | 102° | 64° | 83° | — | — |
| 1974 | 81° | 65° | 73° | — | — |
| 1973 | 75° | 56° | 65° | — | — |
| 1972 | 74° | 64° | 69° | — | — |
| 1971 | 83° | 59° | 71° | — | — |
Costa Mesa, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Costa Mesa, CA Monthly Precipitation
Average rainfall per month, in inches.
Costa Mesa, CA Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Costa Mesa, CA
Most pleasant months in Costa Mesa, CA: January, February, March, April, May, June, July, October, November, December.
What to expect on September 24th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
September 24th outlook →