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El Cajon, CA Weather on August 26
August 26th in El Cajon, CA typically brings hot summer weather, with average highs around 90°F and lows near 64°F — a 26°F daily swing. Over 55 years of records, the warmest August 26th was in 1981 (88°F average), while the coldest was 1978 (68°F) — a 20°F range across recorded history. Rain or other precipitation has occurred on about 2% of August 26th dates historically. Temperatures on this date have remained relatively stable over the past several decades.
What to Expect on August 26
Planning for August 26th in El Cajon, CA? Stay hydrated and seek shade during peak afternoon hours.
August 26 Weather Records for El Cajon
- •The all-time record high for August 26th in El Cajon, CA is 105°F, set in 1981.
- •The coldest August 26th on record dropped to 51°F in 1978.
- •Temperatures have reached 90°F or higher on August 26th in 34 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 El Cajon?
The warmest August 26 in El Cajon, CA reached 105°F in 1981. That is 15°F above the long-term average high of 90°F.
What was the coldest August 26 ever in El Cajon?
The coldest August 26 in El Cajon, CA dropped to 51°F in 1978. That is 13°F below the long-term average low of 64°F.
What is the average temperature on August 26 in El Cajon?
On August 26, El Cajon averages a high of 90°F and a low of 64°F based on 55 years of NOAA weather observations from GILLESPIE FLD.
How many years of weather data are available for August 26 in El Cajon?
We have 55 years of weather records for August 26 in El Cajon, 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 El Cajon
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 87°F | 66°F | 0" | -- |
| 2024 | 89°F | 58°F | 0" | -- |
| 2023 | 93°F | 63°F | 0" | -- |
| 2022 | 90°F | 67°F | 0" | -- |
| 2021 | 99°F | 68°F | 0" | -- |
| 2020 | 94°F | 67°F | 0" | -- |
| 2019 | 95°F | 70°F | 0" | -- |
| 2018 | 86°F | 68°F | 0" | -- |
| 2017 | 91°F | 61°F | 0" | -- |
| 2016 | 80°F | 64°F | 0" | -- |
| 2015 | 95°F | 69°F | 0" | -- |
| 2014 | 91°F | 64°F | 0" | -- |
| 2013 | 90°F | 76°F | 0" | -- |
| 2012 | 88°F | 60°F | 0" | -- |
| 2011 | 94°F | 69°F | 0" | -- |
| 2010 | 98°F | 71°F | 0" | -- |
| 2009 | 102°F | 60°F | 0" | -- |
| 2008 | 90°F | 67°F | 0" | -- |
| 2007 | 90°F | 67°F | -- | -- |
| 2006 | 96°F | 60°F | 0" | -- |
| 2005 | 96°F | 66°F | 0" | -- |
| 2004 | 86°F | 60°F | 0" | -- |
| 2003 | 92°F | 64°F | 0" | -- |
| 2002 | 76°F | 60°F | -- | -- |
| 2001 | 94°F | 59°F | 0" | -- |
| 2000 | 89°F | 67°F | 0" | -- |
| 1999 | 96°F | 65°F | 0" | -- |
| 1998 | 85°F | 66°F | 0" | -- |
| 1997 | 92°F | 70°F | 0" | -- |
| 1996 | 95°F | 65°F | 0" | -- |
| 1995 | 98°F | 60°F | 0" | -- |
| 1994 | 84°F | 67°F | 0.02" | -- |
| 1993 | 92°F | 68°F | 0" | -- |
| 1992 | 93°F | 60°F | 0" | -- |
| 1991 | 83°F | 65°F | 0" | -- |
| 1990 | 82°F | 60°F | 0" | -- |
| 1989 | 80°F | 65°F | 0" | -- |
| 1988 | 92°F | 70°F | 0" | -- |
| 1987 | 80°F | 56°F | 0" | -- |
| 1986 | 91°F | 67°F | 0" | -- |
| 1985 | 93°F | 69°F | 0" | -- |
| 1984 | 87°F | 69°F | 0" | -- |
| 1983 | 97°F | 58°F | 0" | -- |
| 1982 | 93°F | 69°F | 0" | -- |
| 1981 | 105°F | 72°F | 0" | -- |
| 1980 | 90°F | 60°F | 0" | -- |
| 1979 | 86°F | 64°F | 0" | -- |
| 1978 | 84°F | 51°F | 0" | -- |
| 1977 | 80°F | 65°F | 0" | -- |
| 1976 | 89°F | 63°F | 0" | -- |
| 1975 | 90°F | 57°F | 0" | -- |
| 1974 | 93°F | 60°F | 0" | -- |
| 1973 | 76°F | 62°F | 0" | -- |
| 1972 | 83°F | 59°F | 0" | -- |
| 1971 | 95°F | 63°F | 0" | -- |
Based on 55 years of data from NOAA station: GILLESPIE FLD
Monthly Climate Averages
Historical temperature and precipitation averages for El Cajon, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.