Kingshuk Mondal / CC BY 4.0
Rancho Cucamonga, CA Weather on July 11
July 11th in Rancho Cucamonga, CA typically brings hot summer weather, with average highs around 94°F and lows near 62°F — a 32°F daily swing. Over 42 years of records, the warmest July 11th was in 2020 (88°F average), while the coldest was 1974 (65°F) — a 23°F range across recorded history. This date has historically been dry, with little recorded precipitation. The last decade has been 3.7°F warmer on this date compared to 20-30 years ago.
What to Expect on July 11
Planning for July 11th in Rancho Cucamonga, CA? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Rancho Cucamonga
- •The all-time record high for July 11th in Rancho Cucamonga, CA is 106°F, set in 1984.
- •The coldest July 11th on record dropped to 49°F in 1974.
- •Temperatures have reached 90°F or higher on July 11th in 29 of the last 42 years.
- •Last year (1971), July 11th was 5°F warmer than the long-term average.
Frequently Asked Questions
What was the warmest July 11 ever in Rancho Cucamonga?
The warmest July 11 in Rancho Cucamonga, CA reached 106°F in 1984. That is 12°F above the long-term average high of 94°F.
What was the coldest July 11 ever in Rancho Cucamonga?
The coldest July 11 in Rancho Cucamonga, CA dropped to 49°F in 1974. That is 13°F below the long-term average low of 62°F.
What is the average temperature on July 11 in Rancho Cucamonga?
On July 11, Rancho Cucamonga averages a high of 94°F and a low of 62°F based on 42 years of NOAA weather observations from ONTARIO INTL AP.
How many years of weather data are available for July 11 in Rancho Cucamonga?
We have 42 years of weather records for July 11 in Rancho Cucamonga, 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 Rancho Cucamonga
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 91°F | 62°F | 0" | -- |
| 2024 | 95°F | 67°F | 0" | -- |
| 2023 | 98°F | 66°F | 0" | -- |
| 2022 | 93°F | 64°F | 0" | -- |
| 2021 | 99°F | 70°F | 0" | -- |
| 2020 | 105°F | 72°F | 0" | -- |
| 2019 | 99°F | 69°F | 0" | -- |
| 2018 | 99°F | 71°F | 0" | -- |
| 2017 | 95°F | 69°F | 0" | -- |
| 2016 | 91°F | 62°F | 0" | -- |
| 2015 | 86°F | 59°F | 0" | -- |
| 2014 | 90°F | 63°F | 0" | -- |
| 2013 | 85°F | 70°F | 0" | -- |
| 2012 | 102°F | 66°F | 0" | -- |
| 2011 | 85°F | 62°F | 0" | -- |
| 2010 | 86°F | 61°F | 0" | -- |
| 2009 | 99°F | 66°F | 0" | -- |
| 2008 | 88°F | 68°F | 0" | -- |
| 2007 | 87°F | 62°F | 0" | -- |
| 2006 | 96°F | 65°F | 0" | -- |
| 2005 | 93°F | 62°F | 0" | -- |
| 2004 | 97°F | 63°F | 0" | -- |
| 2003 | 98°F | 65°F | 0" | -- |
| 2002 | 92°F | 70°F | 0" | -- |
| 2001 | 87°F | 57°F | 0" | -- |
| 2000 | 84°F | 58°F | 0" | -- |
| 1999 | 103°F | 68°F | 0" | -- |
| 1998 | 95°F | 61°F | 0" | -- |
| 1984 | 106°F | 61°F | 0" | -- |
| 1983 | 104°F | 58°F | 0" | -- |
| 1982 | 98°F | 58°F | 0" | -- |
| 1981 | 94°F | 58°F | 0" | -- |
| 1980 | 99°F | 60°F | 0" | -- |
| 1979 | 89°F | 54°F | 0" | -- |
| 1978 | 89°F | 52°F | 0" | -- |
| 1977 | 88°F | 51°F | 0" | -- |
| 1976 | 86°F | 59°F | 0" | -- |
| 1975 | 95°F | 64°F | 0" | -- |
| 1974 | 82°F | 49°F | 0" | -- |
| 1973 | 90°F | 62°F | 0" | -- |
| 1972 | 98°F | 59°F | 0" | -- |
| 1971 | 99°F | 60°F | 0" | -- |
Based on 42 years of data from NOAA station: ONTARIO INTL AP
Monthly Climate Averages
Historical temperature and precipitation averages for Rancho Cucamonga, CA, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.