Weather on August 15
Mission Viejo, CA
55 Years of Data
About This Date
August 15th in Mission Viejo, CA typically brings warm summer weather, with average highs around 85°F and lows near 63°F. Over 56 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 0.58" of rain. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.1°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.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 85° | 64° | 74° | — | — |
| 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° | 0.06" | — |
| 1983 | 89° | 72° | 80° | 0.58" | — |
| 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° | — | — |
Mission Viejo, CA Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Mission Viejo, CA Monthly Precipitation
Average rainfall per month, in inches.
Mission Viejo, 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 Mission Viejo, CA
Most pleasant months in Mission Viejo, CA: January, February, March, April, May, June, October, November, December.
What to expect on August 15th
This page shows what actually happened each year. For the odds — typical high and low, and how often it stays dry — see the climatological outlook for this date.
August 15th outlook →