Weather on August 19
Costa Mesa, CA
55 Years of Data
Avg High
82°F
Avg Low
66°F
Warmest
1986
84°F avg
Coldest
2002
68°F avg
About This Date
August 19th in Costa Mesa, CA typically brings warm summer weather, with average highs around 82°F and lows near 66°F. Over 55 years of records, the warmest August 19th was in 1986 (84°F average), while the coldest was 2002 (68°F) — a 16°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 19th dates historically. The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.5°F warmer on this date compared to 20-30 years ago.
Planning for August 19th in Costa Mesa, CA? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 66° | 73° | — | — |
| 2024 | 86° | 67° | 76° | — | — |
| 2023 | 76° | 66° | 71° | — | — |
| 2022 | 81° | 67° | 74° | — | — |
| 2021 | 82° | 70° | 76° | — | — |
| 2020 | 90° | 74° | 82° | — | — |
| 2019 | 80° | 67° | 73° | — | — |
| 2018 | 82° | 70° | 76° | — | — |
| 2017 | 78° | 67° | 72° | — | — |
| 2016 | 81° | 64° | 72° | — | — |
| 2015 | 78° | 68° | 73° | — | — |
| 2014 | 81° | 71° | 76° | — | — |
| 2013 | 79° | 67° | 73° | — | — |
| 2012 | 89° | 73° | 81° | — | — |
| 2011 | 76° | 65° | 70° | — | — |
| 2010 | 87° | 68° | 78° | — | — |
| 2009 | 76° | 64° | 70° | — | — |
| 2008 | 77° | 64° | 71° | — | — |
| 2007 | 86° | 68° | 77° | — | — |
| 2006 | 77° | 66° | 72° | — | — |
| 2005 | 76° | 63° | 69° | — | — |
| 2004 | 75° | 65° | 70° | — | — |
| 2003 | 78° | 68° | 73° | — | — |
| 2002coldest | 73° | 63° | 68° | — | — |
| 2001 | 82° | 65° | 73° | — | — |
| 2000 | 85° | 65° | 75° | — | — |
| 1999 | 79° | 60° | 69° | — | — |
| 1998 | 81° | 62° | 71° | — | — |
| 1997 | 91° | 68° | 80° | — | — |
| 1996 | 83° | 61° | 72° | — | — |
| 1995 | 82° | 62° | 72° | — | — |
| 1994 | 86° | 71° | 79° | — | — |
| 1993 | 79° | 66° | 72° | — | — |
| 1992 | 90° | 68° | 79° | — | — |
| 1991 | 81° | 64° | 72° | — | — |
| 1990 | 79° | 67° | 73° | — | — |
| 1989 | 79° | 63° | 71° | — | — |
| 1988 | 77° | 61° | 69° | — | — |
| 1987 | 83° | 59° | 71° | — | — |
| 1986warmest | 96° | 71° | 84° | — | — |
| 1985 | 80° | 60° | 70° | — | — |
| 1984 | 84° | 69° | 77° | — | — |
| 1983 | 75° | 68° | 72° | 0.3" | — |
| 1982 | 88° | 65° | 76° | — | — |
| 1981 | 83° | 68° | 75° | — | — |
| 1980 | 78° | 63° | 70° | — | — |
| 1979 | 76° | 65° | 70° | — | — |
| 1978 | 81° | 62° | 71° | — | — |
| 1977 | 86° | 65° | 75° | — | — |
| 1976 | 80° | 60° | 70° | — | — |
| 1975 | 78° | 62° | 70° | — | — |
| 1974 | 81° | 63° | 72° | — | — |
| 1973 | 96° | 64° | 80° | — | — |
| 1972 | 79° | 62° | 70° | — | — |
| 1971 | 83° | 66° | 74° | — | — |
55 years of data from SANTA ANA JOHN WAYNE AP