Weather on August 15
Mission Viejo, CA
55 Years of Data
Avg High
85°F
Avg Low
62°F
Warmest
2015
87°F avg
Coldest
1982
60°F avg
About This Date
August 15th in Mission Viejo, CA typically brings warm summer weather, with average highs around 85°F and lows near 62°F. Over 55 years of records, the warmest August 15th was in 2015 (87°F average), while the coldest was 1982 (60°F) — a 27°F range across recorded history. Rain or other precipitation has occurred on about 4% of August 15th dates historically, with the wettest August 15th recording 1.47" of rain. The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.2°F warmer on this date compared to 20-30 years ago.
Planning for August 15th in Mission Viejo, CA? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
1.0°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 62° | 70° | — | — |
| 2024 | 87° | 60° | 74° | — | — |
| 2023 | 94° | 62° | 78° | — | — |
| 2022 | 90° | 64° | 77° | — | — |
| 2021 | 87° | 63° | 75° | — | — |
| 2020 | 95° | 71° | 83° | — | — |
| 2019 | 91° | 55° | 73° | — | — |
| 2018 | 82° | 67° | 74° | — | — |
| 2017 | 73° | 62° | 68° | — | — |
| 2016 | 102° | 67° | 84° | — | — |
| 2015warmest | 103° | 71° | 87° | — | — |
| 2014 | 94° | 62° | 78° | — | — |
| 2013 | 84° | 57° | 71° | — | — |
| 2012 | 86° | 63° | 74° | — | — |
| 2011 | 82° | 59° | 71° | — | — |
| 2010 | 89° | 52° | 70° | — | — |
| 2009 | 79° | 61° | 70° | — | — |
| 2008 | 85° | 63° | 74° | — | — |
| 2007 | 97° | 63° | 80° | — | — |
| 2006 | 81° | 59° | 70° | — | — |
| 2005 | 78° | 61° | 69° | — | — |
| 2004 | 82° | 60° | 71° | — | — |
| 2003 | 99° | 68° | 83° | — | — |
| 2002 | 81° | 59° | 70° | — | — |
| 2001 | 94° | 61° | 77° | — | — |
| 2000 | 91° | 65° | 78° | — | — |
| 1999 | 82° | 57° | 70° | — | — |
| 1998 | 85° | 64° | 74° | — | — |
| 1997 | 76° | 64° | 70° | — | — |
| 1996 | 97° | 68° | 82° | — | — |
| 1995 | 79° | 61° | 70° | — | — |
| 1994 | 97° | 72° | 84° | — | — |
| 1993 | 78° | 63° | 70° | — | — |
| 1992 | 95° | 72° | 83° | — | — |
| 1991 | 79° | 66° | 72° | — | — |
| 1990 | 73° | 66° | 70° | — | — |
| 1989 | 82° | 63° | 72° | — | — |
| 1988 | 77° | 55° | 66° | — | — |
| 1987 | 73° | 59° | 66° | — | — |
| 1986 | 79° | 61° | 70° | — | — |
| 1985 | 81° | 60° | 70° | — | — |
| 1984 | 87° | 72° | 79° | 0.15" | — |
| 1983 | 89° | 72° | 80° | 1.47" | — |
| 1982coldest | 80° | 40° | 60° | — | — |
| 1981 | 88° | 68° | 78° | — | — |
| 1980 | 77° | 66° | 72° | — | — |
| 1979 | 78° | 64° | 71° | — | — |
| 1978 | 82° | 60° | 71° | — | — |
| 1977 | 88° | 62° | 75° | — | — |
| 1976 | 75° | 61° | 68° | — | — |
| 1975 | 77° | 57° | 67° | — | — |
| 1974 | 78° | 60° | 69° | — | — |
| 1973 | 83° | 62° | 72° | — | — |
| 1972 | 78° | 58° | 68° | — | — |
| 1971 | 84° | 67° | 75° | — | — |
55 years of data from EL TORO MCAS