Dietmar Rabich / CC BY-SA 4.0
Jurupa Valley, CA Weather on September 4
September 4th in Jurupa Valley, CA typically brings hot fall weather, with average highs around 96°F and lows near 64°F — a 32°F daily swing. Over 55 years of records, the warmest September 4th was in 2022 (95°F average), while the coldest was 1985 (66°F) — a 29°F range across recorded history. Rain or other precipitation has occurred on about 2% of September 4th dates historically. The last decade has been 4.2°F warmer on this date compared to 20-30 years ago.
What to Expect on September 4
Planning for September 4th in Jurupa Valley, CA? Stay hydrated and seek shade during peak afternoon hours.
September 4 Weather Records for Jurupa Valley
- •The all-time record high for September 4th in Jurupa Valley, CA is 111°F, set in 2007.
- •The coldest September 4th on record dropped to 54°F in 2005.
- •Temperatures have reached 90°F or higher on September 4th in 41 of the last 55 years.
Frequently Asked Questions
What was the warmest September 4 ever in Jurupa Valley?
The warmest September 4 in Jurupa Valley, CA reached 111°F in 2007. That is 15°F above the long-term average high of 96°F.
What was the coldest September 4 ever in Jurupa Valley?
The coldest September 4 in Jurupa Valley, CA dropped to 54°F in 2005. That is 10°F below the long-term average low of 64°F.
What is the average temperature on September 4 in Jurupa Valley?
On September 4, Jurupa Valley averages a high of 96°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 September 4 in Jurupa Valley?
We have 55 years of weather records for September 4 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.
September 4 Weather History in Jurupa Valley
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 98°F | 70°F | 0" | -- |
| 2024 | 108°F | 67°F | 0" | -- |
| 2023 | 82°F | 61°F | 0" | -- |
| 2022 | 110°F | 80°F | 0" | -- |
| 2021 | 101°F | 62°F | 0" | -- |
| 2020 | 103°F | 67°F | 0" | -- |
| 2019 | 104°F | 71°F | 0" | -- |
| 2018 | 88°F | 65°F | 0" | -- |
| 2017 | 89°F | 71°F | 0" | -- |
| 2016 | 81°F | 63°F | 0" | -- |
| 2015 | 84°F | 63°F | 0" | -- |
| 2014 | 88°F | 65°F | 0" | -- |
| 2013 | 104°F | 73°F | 0" | -- |
| 2012 | 99°F | 68°F | 0" | -- |
| 2011 | 93°F | 61°F | 0" | -- |
| 2010 | 108°F | 65°F | 0" | -- |
| 2009 | 101°F | 72°F | 0" | -- |
| 2008 | 99°F | 67°F | 0" | -- |
| 2007 | 111°F | 75°F | 0" | -- |
| 2006 | 102°F | 68°F | 0" | -- |
| 2005 | 94°F | 54°F | 0" | -- |
| 2004 | 97°F | 55°F | 0" | -- |
| 2003 | 103°F | 66°F | 0" | -- |
| 2002 | 99°F | 65°F | 0" | -- |
| 2001 | 94°F | 61°F | 0" | -- |
| 2000 | 88°F | 55°F | 0" | -- |
| 1999 | 85°F | 55°F | 0" | -- |
| 1998 | 82°F | 72°F | 0" | -- |
| 1997 | 106°F | 73°F | 0" | -- |
| 1996 | 92°F | 62°F | 0" | -- |
| 1995 | 101°F | 67°F | 0" | -- |
| 1994 | 95°F | 62°F | 0" | -- |
| 1993 | 101°F | 62°F | 0" | -- |
| 1992 | 85°F | 56°F | 0" | -- |
| 1991 | 93°F | 65°F | 0" | -- |
| 1990 | 101°F | 63°F | 0" | -- |
| 1989 | 100°F | 58°F | 0" | -- |
| 1988 | 87°F | 72°F | 0" | -- |
| 1987 | 94°F | 62°F | 0" | -- |
| 1986 | 97°F | 57°F | 0" | -- |
| 1985 | 74°F | 59°F | 0" | -- |
| 1984 | 109°F | 67°F | 0" | -- |
| 1983 | 94°F | 60°F | 0" | -- |
| 1982 | 105°F | 66°F | 0" | -- |
| 1981 | 89°F | 61°F | 0" | -- |
| 1980 | 94°F | 58°F | 0" | -- |
| 1979 | 96°F | 57°F | 0" | -- |
| 1978 | 97°F | 70°F | 0" | -- |
| 1977 | 100°F | 60°F | 0" | -- |
| 1976 | 98°F | 67°F | 0.01" | -- |
| 1975 | 100°F | 61°F | 0" | -- |
| 1974 | 101°F | 65°F | 0" | -- |
| 1973 | 79°F | 57°F | 0" | -- |
| 1972 | 98°F | 67°F | 0" | -- |
| 1971 | 95°F | 56°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.