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Jurupa Valley, CA Weather on August 28
August 28th in Jurupa Valley, CA typically brings hot summer weather, with average highs around 97°F and lows near 64°F — a 33°F daily swing. Over 55 years of records, the warmest August 28th was in 2017 (89°F average), while the coldest was 1973 (70°F) — a 19°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 2.1°F warmer on this date compared to 20-30 years ago.
What to Expect on August 28
Planning for August 28th in Jurupa Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
August 28 Weather Records for Jurupa Valley
- •The all-time record high for August 28th in Jurupa Valley, CA is 109°F, set in 2017.
- •The coldest August 28th on record dropped to 53°F in 1975.
- •Temperatures have reached 90°F or higher on August 28th in 47 of the last 55 years.
Frequently Asked Questions
What was the warmest August 28 ever in Jurupa Valley?
The warmest August 28 in Jurupa Valley, CA reached 109°F in 2017. That is 12°F above the long-term average high of 97°F.
What was the coldest August 28 ever in Jurupa Valley?
The coldest August 28 in Jurupa Valley, CA dropped to 53°F in 1975. That is 11°F below the long-term average low of 64°F.
What is the average temperature on August 28 in Jurupa Valley?
On August 28, Jurupa Valley averages a high of 97°F and a low of 64°F based on 55 years of NOAA weather observations from RIVERSIDE MUNI AP.
How many years of weather data are available for August 28 in Jurupa Valley?
We have 55 years of weather records for August 28 in Jurupa Valley, 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 28 Weather History in Jurupa Valley
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 88°F | 71°F | 0" | -- |
| 2024 | 93°F | 61°F | 0" | -- |
| 2023 | 106°F | 68°F | 0" | -- |
| 2022 | 89°F | 65°F | 0" | -- |
| 2021 | 103°F | 67°F | 0" | -- |
| 2020 | 99°F | 67°F | 0" | -- |
| 2019 | 93°F | 66°F | 0" | -- |
| 2018 | 89°F | 62°F | 0" | -- |
| 2017 | 109°F | 69°F | 0" | -- |
| 2016 | 96°F | 63°F | 0" | -- |
| 2015 | 105°F | 72°F | 0" | -- |
| 2014 | 99°F | 67°F | 0" | -- |
| 2013 | 100°F | 72°F | 0" | -- |
| 2012 | 104°F | 66°F | 0" | -- |
| 2011 | 104°F | 72°F | 0" | -- |
| 2010 | 81°F | 59°F | 0" | -- |
| 2009 | 106°F | 68°F | 0" | -- |
| 2008 | 92°F | 65°F | 0" | -- |
| 2007 | 103°F | 69°F | 0" | -- |
| 2006 | 100°F | 59°F | 0" | -- |
| 2005 | 103°F | 65°F | 0" | -- |
| 2004 | 92°F | 60°F | 0" | -- |
| 2003 | 96°F | 66°F | 0" | -- |
| 2002 | 88°F | 59°F | 0" | -- |
| 2001 | 93°F | 59°F | 0" | -- |
| 2000 | 84°F | 64°F | 0" | -- |
| 1999 | 100°F | 62°F | 0" | -- |
| 1998 | 103°F | 62°F | 0" | -- |
| 1997 | 96°F | 62°F | 0" | -- |
| 1996 | 107°F | 62°F | 0" | -- |
| 1995 | 103°F | 62°F | 0" | -- |
| 1994 | 98°F | 66°F | 0" | -- |
| 1993 | 94°F | 65°F | 0" | -- |
| 1992 | 100°F | 64°F | 0" | -- |
| 1991 | 92°F | 58°F | 0" | -- |
| 1990 | 101°F | 61°F | 0" | -- |
| 1989 | 92°F | 57°F | 0" | -- |
| 1988 | 98°F | 68°F | 0" | -- |
| 1987 | 100°F | 61°F | -- | -- |
| 1986 | 98°F | 62°F | 0" | -- |
| 1985 | 103°F | 66°F | 0" | -- |
| 1984 | 100°F | 68°F | 0" | -- |
| 1983 | 101°F | 61°F | 0" | -- |
| 1982 | 92°F | 68°F | 0" | -- |
| 1981 | 108°F | 69°F | 0" | -- |
| 1980 | 93°F | 57°F | 0" | -- |
| 1979 | 88°F | 64°F | 0" | -- |
| 1978 | 95°F | 60°F | 0" | -- |
| 1977 | 91°F | 62°F | 0" | -- |
| 1976 | 103°F | 63°F | 0" | -- |
| 1975 | 91°F | 53°F | 0" | -- |
| 1974 | 93°F | 54°F | 0" | -- |
| 1973 | 87°F | 53°F | 0" | -- |
| 1972 | 97°F | 62°F | 0" | -- |
| 1971 | 101°F | 64°F | 0" | -- |
Based on 55 years of data from NOAA station: RIVERSIDE MUNI AP
Monthly Climate Averages
Historical temperature and precipitation averages for Jurupa Valley, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.