Weather on September 3
Costa Mesa, CA
55 Years of Data
About This Date
September 3rd in Costa Mesa, CA typically brings warm fall weather, with average highs around 85°F and lows near 66°F. Over 55 years of records, the warmest September 3rd was in 2022 (87°F average), while the coldest was 1999 (68°F) — a 19°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 3rd dates historically. The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.9°F warmer on this date compared to 20-30 years ago.
Planning for September 3rd in Costa Mesa, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 86° | 70° | 78° | — | — |
| 2024 | 86° | 69° | 78° | — | — |
| 2023 | 79° | 68° | 73° | — | — |
| 2022warmest | 97° | 77° | 87° | — | — |
| 2021 | 78° | 67° | 72° | — | — |
| 2020 | 81° | 66° | 73° | — | — |
| 2019 | 92° | 74° | 83° | — | — |
| 2018 | 79° | 68° | 73° | — | — |
| 2017 | 92° | 75° | 83° | — | — |
| 2016 | 74° | 66° | 70° | — | — |
| 2015 | 76° | 65° | 70° | — | — |
| 2014 | 83° | 71° | 77° | — | — |
| 2013 | 92° | 72° | 82° | — | — |
| 2012 | 86° | 66° | 76° | — | — |
| 2011 | 77° | 60° | 69° | — | — |
| 2010 | 87° | 60° | 74° | — | — |
| 2009 | 95° | 70° | 82° | — | — |
| 2008 | 85° | 66° | 75° | — | — |
| 2007 | 99° | 74° | 86° | — | — |
| 2006 | 90° | 68° | 79° | — | — |
| 2005 | 86° | 61° | 73° | — | — |
| 2004 | 75° | 65° | 70° | — | — |
| 2003 | 80° | 65° | 72° | — | — |
| 2002 | 82° | 66° | 74° | — | — |
| 2001 | 78° | 66° | 72° | — | — |
| 2000 | 78° | 61° | 69° | — | — |
| 1999coldest | 74° | 63° | 68° | — | — |
| 1998 | 101° | 72° | 86° | — | — |
| 1997 | 93° | 71° | 82° | — | — |
| 1996 | 83° | 67° | 75° | — | — |
| 1995 | 89° | 67° | 78° | — | — |
| 1994 | 82° | 65° | 73° | — | — |
| 1993 | 85° | 66° | 75° | — | — |
| 1992 | 82° | 64° | 73° | — | — |
| 1991 | 84° | 64° | 74° | — | — |
| 1990 | 85° | 63° | 74° | — | — |
| 1989 | 84° | 58° | 71° | — | — |
| 1988 | 100° | 67° | 83° | — | — |
| 1987 | 86° | 66° | 76° | — | — |
| 1986 | 80° | 64° | 72° | — | — |
| 1985 | 79° | 65° | 72° | — | — |
| 1984 | 95° | 68° | 82° | — | — |
| 1983 | 88° | 66° | 77° | — | — |
| 1982 | 97° | 69° | 83° | — | — |
| 1981 | 80° | 64° | 72° | — | — |
| 1980 | 79° | 61° | 70° | — | — |
| 1979 | 88° | 66° | 77° | — | — |
| 1978 | 87° | 55° | 71° | — | — |
| 1977 | 84° | 64° | 74° | — | — |
| 1976 | 87° | 65° | 76° | — | — |
| 1975 | 85° | 58° | 71° | — | — |
| 1974 | 87° | 64° | 76° | — | — |
| 1973 | 78° | 64° | 71° | — | — |
| 1972 | 83° | 64° | 73° | 0.13" | — |
| 1971 | 80° | 65° | 72° | — | — |
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: June, July.