Wing-Chi Poon / CC BY-SA 2.5
Mission Viejo, CA Weather on August 26
August 26th in Mission Viejo, CA typically brings warm summer weather, with average highs around 87°F and lows near 63°F. Over 55 years of records, the warmest August 26th was in 1981 (85°F average), while the coldest was 1987 (65°F) — a 20°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.
What to Expect on August 26
Planning for August 26th in Mission Viejo, CA? Stay hydrated and seek shade during peak afternoon hours.
August 26 Weather Records for Mission Viejo
- •The all-time record high for August 26th in Mission Viejo, CA is 101°F, set in 2010.
- •The coldest August 26th on record dropped to 54°F in 2006.
- •Temperatures have reached 90°F or higher on August 26th in 15 of the last 55 years.
- •Last year (1971), August 26th was 5°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest August 26 ever in Mission Viejo?
The warmest August 26 in Mission Viejo, CA reached 101°F in 2010. That is 14°F above the long-term average high of 87°F.
What was the coldest August 26 ever in Mission Viejo?
The coldest August 26 in Mission Viejo, CA dropped to 54°F in 2006. That is 9°F below the long-term average low of 63°F.
What is the average temperature on August 26 in Mission Viejo?
On August 26, Mission Viejo averages a high of 87°F and a low of 63°F based on 55 years of NOAA weather observations from EL TORO MCAS.
How many years of weather data are available for August 26 in Mission Viejo?
We have 55 years of weather records for August 26 in Mission Viejo, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
August 26 Weather History in Mission Viejo
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 62°F | -- | -- |
| 2024 | 87°F | 62°F | -- | -- |
| 2023 | 93°F | 60°F | -- | -- |
| 2022 | 87°F | 65°F | -- | -- |
| 2021 | 96°F | 66°F | -- | -- |
| 2020 | 90°F | 65°F | -- | -- |
| 2019 | 89°F | 66°F | -- | -- |
| 2018 | 82°F | 63°F | -- | -- |
| 2017 | 88°F | 63°F | -- | -- |
| 2016 | 76°F | 60°F | -- | -- |
| 2015 | 93°F | 67°F | -- | -- |
| 2014 | 87°F | 61°F | -- | -- |
| 2013 | 93°F | 69°F | -- | -- |
| 2012 | 84°F | 58°F | -- | -- |
| 2011 | 99°F | 64°F | -- | -- |
| 2010 | 101°F | 61°F | -- | -- |
| 2009 | 101°F | 67°F | -- | -- |
| 2008 | 88°F | 60°F | -- | -- |
| 2007 | 87°F | 64°F | -- | -- |
| 2006 | 87°F | 54°F | -- | -- |
| 2005 | 98°F | 65°F | -- | -- |
| 2004 | 80°F | 60°F | -- | -- |
| 2003 | 89°F | 62°F | -- | -- |
| 2002 | 87°F | 58°F | -- | -- |
| 2001 | 93°F | 59°F | -- | -- |
| 2000 | 85°F | 62°F | -- | -- |
| 1999 | 94°F | 64°F | -- | -- |
| 1998 | 83°F | 65°F | 0" | -- |
| 1997 | 83°F | 61°F | 0" | -- |
| 1996 | 81°F | 61°F | 0" | -- |
| 1995 | 87°F | 59°F | 0" | -- |
| 1994 | 85°F | 66°F | 0" | -- |
| 1993 | 91°F | 66°F | 0" | -- |
| 1992 | 87°F | 62°F | 0" | -- |
| 1991 | 83°F | 66°F | 0" | -- |
| 1990 | 77°F | 60°F | 0" | -- |
| 1989 | 76°F | 63°F | 0" | -- |
| 1988 | 85°F | 68°F | 0" | -- |
| 1987 | 75°F | 55°F | 0" | -- |
| 1986 | 88°F | 64°F | 0" | -- |
| 1985 | 95°F | 67°F | 0" | -- |
| 1984 | 83°F | 69°F | 0" | -- |
| 1983 | 89°F | 62°F | 0" | -- |
| 1982 | 88°F | 67°F | 0" | -- |
| 1981 | 99°F | 72°F | 0" | -- |
| 1980 | 82°F | 61°F | 0" | -- |
| 1979 | 83°F | 63°F | 0" | -- |
| 1978 | 80°F | 57°F | 0" | -- |
| 1977 | 80°F | 66°F | 0" | -- |
| 1976 | 86°F | 60°F | 0" | -- |
| 1975 | 79°F | 57°F | 0" | -- |
| 1974 | 86°F | 58°F | 0" | -- |
| 1973 | 73°F | 62°F | 0" | -- |
| 1972 | 77°F | 64°F | 0" | -- |
| 1971 | 92°F | 60°F | 0" | -- |
Based on 55 years of data from NOAA station: EL TORO MCAS
Monthly Climate Averages
Historical temperature and precipitation averages for Mission Viejo, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.