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Riverside, CA Weather on August 26
August 26th in Riverside, CA typically brings hot summer weather, with average highs around 95°F and lows near 63°F — a 32°F daily swing. Over 55 years of records, the warmest August 26th was in 2010 (90°F average), while the coldest was 1989 (68°F) — a 22°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 1.1°F warmer on this date compared to 20-30 years ago.
What to Expect on August 26
Planning for August 26th in Riverside, CA? Stay hydrated and seek shade during peak afternoon hours.
August 26 Weather Records for Riverside
- •The all-time record high for August 26th in Riverside, CA is 107°F, set in 2011.
- •The coldest August 26th on record dropped to 53°F in 1987.
- •Temperatures have reached 90°F or higher on August 26th in 47 of the last 55 years.
Frequently Asked Questions
What was the warmest August 26 ever in Riverside?
The warmest August 26 in Riverside, CA reached 107°F in 2011. That is 12°F above the long-term average high of 95°F.
What was the coldest August 26 ever in Riverside?
The coldest August 26 in Riverside, CA dropped to 53°F in 1987. That is 10°F below the long-term average low of 63°F.
What is the average temperature on August 26 in Riverside?
On August 26, Riverside averages a high of 95°F and a low of 63°F based on 55 years of NOAA weather observations from RIVERSIDE CITRUS EXP.
How many years of weather data are available for August 26 in Riverside?
We have 55 years of weather records for August 26 in Riverside, 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 Riverside
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 95°F | 69°F | 0" | -- |
| 2024 | 96°F | 62°F | 0" | -- |
| 2023 | 98°F | 62°F | 0" | -- |
| 2022 | 97°F | 68°F | 0" | -- |
| 2021 | 103°F | 68°F | 0" | -- |
| 2020 | 101°F | 69°F | 0" | -- |
| 2019 | 100°F | 70°F | 0" | -- |
| 2018 | 90°F | 64°F | 0" | -- |
| 2017 | 103°F | 65°F | 0" | -- |
| 2016 | 87°F | 60°F | 0" | -- |
| 2015 | 101°F | 72°F | 0" | -- |
| 2014 | 93°F | 66°F | 0" | -- |
| 2013 | 91°F | 73°F | 0" | -- |
| 2012 | 92°F | 63°F | 0" | -- |
| 2011 | 107°F | 73°F | 0" | -- |
| 2010 | 105°F | 76°F | 0" | -- |
| 2009 | 104°F | 61°F | 0" | -- |
| 2008 | 94°F | 69°F | 0" | -- |
| 2007 | 97°F | 67°F | 0" | -- |
| 2006 | 96°F | 55°F | 0" | -- |
| 2005 | 104°F | 67°F | 0" | -- |
| 2004 | 90°F | 58°F | 0" | -- |
| 2003 | 99°F | 69°F | 0" | -- |
| 2002 | 94°F | 57°F | 0" | -- |
| 2001 | 101°F | 63°F | 0" | -- |
| 2000 | 95°F | 63°F | 0" | -- |
| 1999 | 101°F | 69°F | 0" | -- |
| 1998 | 95°F | 64°F | 0" | -- |
| 1997 | 96°F | 60°F | 0" | -- |
| 1996 | 100°F | 60°F | 0" | -- |
| 1995 | 97°F | 57°F | 0" | -- |
| 1994 | 92°F | 64°F | 0" | -- |
| 1993 | 98°F | 67°F | 0" | -- |
| 1992 | 95°F | 61°F | 0" | -- |
| 1991 | 90°F | 61°F | 0" | -- |
| 1990 | 85°F | 57°F | 0" | -- |
| 1989 | 82°F | 54°F | 0" | -- |
| 1988 | 96°F | 70°F | 0" | -- |
| 1987 | 85°F | 53°F | 0" | -- |
| 1986 | 99°F | 66°F | 0" | -- |
| 1985 | 101°F | 70°F | 0" | -- |
| 1984 | 93°F | 68°F | 0" | -- |
| 1983 | 100°F | 63°F | 0" | -- |
| 1982 | 92°F | 64°F | 0" | -- |
| 1981 | 107°F | 71°F | 0" | -- |
| 1980 | 93°F | 61°F | 0" | -- |
| 1979 | 94°F | 58°F | 0" | -- |
| 1978 | 87°F | 53°F | 0" | -- |
| 1977 | 89°F | 61°F | 0" | -- |
| 1976 | 97°F | 60°F | 0" | -- |
| 1975 | 96°F | 54°F | 0" | -- |
| 1974 | 98°F | 57°F | 0" | -- |
| 1973 | 83°F | 58°F | 0" | -- |
| 1972 | 83°F | 58°F | 0" | -- |
| 1971 | 95°F | 59°F | 0" | -- |
Based on 55 years of data from NOAA station: RIVERSIDE CITRUS EXP
Monthly Climate Averages
Historical temperature and precipitation averages for Riverside, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.