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Rialto, CA Weather on July 11
July 11th in Rialto, CA typically brings hot summer weather, with average highs around 93°F and lows near 62°F — a 31°F daily swing. Over 47 years of records, the warmest July 11th was in 1999 (86°F average), while the coldest was 1992 (68°F) — a 18°F range across recorded history. This date has historically been dry, with little recorded precipitation.
What to Expect on July 11
Planning for July 11th in Rialto, CA? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Rialto
- •The all-time record high for July 11th in Rialto, CA is 108°F, set in 1971.
- •The coldest July 11th on record dropped to 54°F in 2001.
- •Temperatures have reached 90°F or higher on July 11th in 29 of the last 47 years.
- •Last year (1971), July 11th was 15°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest July 11 ever in Rialto?
The warmest July 11 in Rialto, CA reached 108°F in 1971. That is 15°F above the long-term average high of 93°F.
What was the coldest July 11 ever in Rialto?
The coldest July 11 in Rialto, CA dropped to 54°F in 2001. That is 8°F below the long-term average low of 62°F.
What is the average temperature on July 11 in Rialto?
On July 11, Rialto averages a high of 93°F and a low of 62°F based on 47 years of NOAA weather observations from FONTANA 5 N.
How many years of weather data are available for July 11 in Rialto?
We have 47 years of weather records for July 11 in Rialto, CA, sourced from NOAA's Global Historical Climatology Network. Records include daily high and low temperatures, precipitation, and snowfall data going back to 2025.
July 11 Weather History in Rialto
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 95°F | 64°F | -- | -- |
| 2017 | 90°F | 69°F | -- | -- |
| 2016 | 87°F | 62°F | -- | -- |
| 2015 | 84°F | 55°F | -- | -- |
| 2014 | 86°F | 60°F | -- | -- |
| 2013 | 80°F | 69°F | -- | -- |
| 2012 | 103°F | 70°F | -- | -- |
| 2011 | 83°F | 57°F | -- | -- |
| 2010 | 87°F | 61°F | -- | -- |
| 2009 | 95°F | 68°F | -- | -- |
| 2008 | 83°F | 68°F | -- | -- |
| 2007 | 84°F | 59°F | -- | -- |
| 2006 | 94°F | 65°F | -- | -- |
| 2005 | 95°F | 60°F | -- | -- |
| 2004 | 101°F | 63°F | -- | -- |
| 2003 | 100°F | 69°F | -- | -- |
| 2001 | 88°F | 54°F | -- | -- |
| 2000 | 85°F | 56°F | -- | -- |
| 1999 | 102°F | 70°F | -- | -- |
| 1998 | 98°F | 64°F | -- | -- |
| 1997 | 81°F | 56°F | -- | -- |
| 1996 | 94°F | 63°F | -- | -- |
| 1995 | 93°F | 62°F | -- | -- |
| 1994 | 95°F | 63°F | 0" | -- |
| 1993 | 90°F | 59°F | -- | -- |
| 1992 | 73°F | 63°F | -- | -- |
| 1991 | 84°F | 56°F | -- | -- |
| 1990 | 101°F | 68°F | 0" | -- |
| 1989 | 89°F | 61°F | 0" | -- |
| 1988 | 87°F | 60°F | 0" | -- |
| 1987 | 87°F | 59°F | 0" | -- |
| 1986 | 91°F | 58°F | 0" | -- |
| 1985 | 99°F | 71°F | 0" | -- |
| 1984 | 102°F | 67°F | 0" | -- |
| 1983 | 107°F | 62°F | 0" | -- |
| 1982 | 103°F | 61°F | 0" | -- |
| 1981 | 99°F | 62°F | 0" | -- |
| 1980 | 103°F | 64°F | 0" | -- |
| 1979 | 95°F | 62°F | 0" | -- |
| 1978 | 88°F | 67°F | 0" | -- |
| 1977 | 93°F | 57°F | 0" | -- |
| 1976 | 94°F | 60°F | 0" | -- |
| 1975 | 102°F | 68°F | 0" | -- |
| 1974 | 87°F | 58°F | 0" | -- |
| 1973 | 98°F | 63°F | 0" | -- |
| 1972 | 101°F | 60°F | 0" | -- |
| 1971 | 108°F | 58°F | 0" | -- |
Based on 47 years of data from NOAA station: FONTANA 5 N
Monthly Climate Averages
Historical temperature and precipitation averages for Rialto, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.