Weather on July 17
Costa Mesa, CA
55 Years of Data
About This Date
July 17th in Costa Mesa, CA typically brings warm summer weather, with average highs around 81°F and lows near 65°F. Over 55 years of records, the warmest July 17th was in 1990 (79°F average), while the coldest was 1987 (65°F) — a 14°F range across recorded history. Rain or other precipitation has occurred on about 5% of July 17th dates historically. 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 17th in Costa Mesa, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 66° | 72° | — | — |
| 2024 | 79° | 67° | 73° | — | — |
| 2023 | 84° | 68° | 76° | — | — |
| 2022 | 82° | 66° | 74° | — | — |
| 2021 | 83° | 69° | 76° | — | — |
| 2020 | 79° | 67° | 73° | — | — |
| 2019 | 75° | 67° | 71° | — | — |
| 2018 | 80° | 69° | 75° | — | — |
| 2017 | 78° | 69° | 74° | — | — |
| 2016 | 77° | 66° | 72° | — | — |
| 2015 | 79° | 66° | 72° | — | — |
| 2014 | 80° | 69° | 75° | — | — |
| 2013 | 84° | 64° | 74° | — | — |
| 2012 | 75° | 65° | 70° | — | — |
| 2011 | 77° | 64° | 71° | — | — |
| 2010 | 84° | 68° | 76° | — | — |
| 2009 | 85° | 65° | 75° | — | — |
| 2008 | 80° | 65° | 72° | — | — |
| 2007 | 75° | 66° | 71° | — | — |
| 2006 | 86° | 71° | 79° | 0.03" | — |
| 2005 | 79° | 63° | 71° | — | — |
| 2004 | 83° | 67° | 75° | — | — |
| 2003 | 84° | 69° | 77° | — | — |
| 2002 | 76° | 64° | 70° | — | — |
| 2001 | 75° | 63° | 69° | — | — |
| 2000 | 80° | 61° | 70° | — | — |
| 1999 | 80° | 62° | 71° | 0.3" | — |
| 1998 | 94° | 63° | 78° | — | — |
| 1997 | 82° | 66° | 74° | — | — |
| 1996 | 79° | 65° | 72° | — | — |
| 1995 | 85° | 65° | 75° | — | — |
| 1994 | 79° | 63° | 71° | — | — |
| 1993 | 80° | 65° | 72° | — | — |
| 1992 | 86° | 66° | 76° | — | — |
| 1991 | 76° | 63° | 69° | — | — |
| 1990warmest | 89° | 69° | 79° | — | — |
| 1989 | 80° | 63° | 71° | — | — |
| 1988 | 82° | 65° | 73° | — | — |
| 1987coldest | 71° | 59° | 65° | 0.05" | — |
| 1986 | 78° | 62° | 70° | — | — |
| 1985 | 83° | 67° | 75° | — | — |
| 1984 | 87° | 69° | 78° | — | — |
| 1983 | 79° | 61° | 70° | — | — |
| 1982 | 79° | 62° | 70° | — | — |
| 1981 | 83° | 67° | 75° | — | — |
| 1980 | 89° | 61° | 75° | — | — |
| 1979 | 90° | 63° | 76° | — | — |
| 1978 | 84° | 64° | 74° | — | — |
| 1977 | 87° | 62° | 75° | — | — |
| 1976 | 80° | 64° | 72° | — | — |
| 1975 | 77° | 63° | 70° | — | — |
| 1974 | 89° | 62° | 76° | — | — |
| 1973 | 78° | 59° | 69° | — | — |
| 1972 | 84° | 64° | 74° | — | — |
| 1971 | 83° | 65° | 74° | — | — |
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.