Weather on July 4
Costa Mesa, CA
55 Years of Data
About This Date
July 4th in Costa Mesa, CA typically brings warm summer weather, with average highs around 80°F and lows near 63°F. Over 55 years of records, the warmest July 4th was in 1981 (83°F average), while the coldest was 1975 (66°F) — a 17°F range across recorded history. This date has historically been dry, with little recorded precipitation. 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 July 4th in Costa Mesa, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 63° | 70° | — | — |
| 2024 | 77° | 65° | 71° | — | — |
| 2023 | 76° | 62° | 69° | — | — |
| 2022 | 76° | 64° | 70° | — | — |
| 2021 | 78° | 67° | 72° | — | — |
| 2020 | 82° | 65° | 73° | — | — |
| 2019 | 77° | 64° | 71° | — | — |
| 2018 | 78° | 66° | 72° | — | — |
| 2017 | 84° | 63° | 73° | — | — |
| 2016 | 75° | 64° | 70° | — | — |
| 2015 | 76° | 64° | 70° | — | — |
| 2014 | 83° | 68° | 75° | — | — |
| 2013 | 77° | 64° | 71° | — | — |
| 2012 | 71° | 63° | 67° | — | — |
| 2011 | 83° | 65° | 74° | — | — |
| 2010 | 73° | 63° | 68° | — | — |
| 2009 | 81° | 61° | 71° | — | — |
| 2008 | 85° | 63° | 74° | — | — |
| 2007 | 77° | 65° | 71° | — | — |
| 2006 | 84° | 69° | 77° | — | — |
| 2005 | 74° | 60° | 67° | — | — |
| 2004 | 75° | 64° | 70° | — | — |
| 2003 | 83° | 64° | 73° | — | — |
| 2002 | 71° | 62° | 67° | — | — |
| 2001 | 84° | 69° | 77° | — | — |
| 2000 | 72° | 64° | 68° | — | — |
| 1999 | 76° | 63° | 69° | — | — |
| 1998 | 77° | 62° | 70° | — | — |
| 1997 | 88° | 63° | 75° | — | — |
| 1996 | 84° | 65° | 74° | — | — |
| 1995 | 75° | 63° | 69° | — | — |
| 1994 | 79° | 64° | 71° | — | — |
| 1993 | 77° | 66° | 72° | — | — |
| 1992 | 78° | 61° | 69° | — | — |
| 1991 | 75° | 62° | 69° | — | — |
| 1990 | 84° | 62° | 73° | — | — |
| 1989 | 97° | 62° | 79° | — | — |
| 1988 | 79° | 63° | 71° | — | — |
| 1987 | 78° | 58° | 68° | — | — |
| 1986 | 78° | 65° | 71° | — | — |
| 1985 | 94° | 68° | 81° | — | — |
| 1984 | 83° | 63° | 73° | — | — |
| 1983 | 79° | 62° | 70° | — | — |
| 1982 | 78° | 60° | 69° | — | — |
| 1981warmest | 98° | 68° | 83° | — | — |
| 1980 | 84° | 61° | 72° | — | — |
| 1979 | 77° | 60° | 69° | — | — |
| 1978 | 80° | 61° | 70° | — | — |
| 1977 | 76° | 62° | 69° | — | — |
| 1976 | 81° | 63° | 72° | — | — |
| 1975coldest | 76° | 57° | 66° | — | — |
| 1974 | 83° | 58° | 70° | — | — |
| 1973 | 87° | 62° | 75° | — | — |
| 1972 | 86° | 58° | 72° | — | — |
| 1971 | 77° | 62° | 70° | — | — |
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.