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Naperville, IL Weather on July 11
July 11th in Naperville, IL typically brings warm summer weather, with average highs around 85°F and lows near 61°F. Over 55 years of records, the warmest July 11th was in 1976 (87°F average), while the coldest was 1975 (62°F) — a 25°F range across recorded history. Rain or other precipitation has occurred on about 29% of July 11th dates historically, with the wettest July 11th recording 3.56" of rain. The last decade has been 2.4°F warmer on this date compared to 20-30 years ago.
What to Expect on July 11
Planning for July 11th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
July 11 Weather Records for Naperville
- •The all-time record high for July 11th in Naperville, IL is 98°F, set in 1989.
- •The coldest July 11th on record dropped to 47°F in 1996.
- •Temperatures have reached 90°F or higher on July 11th in 13 of the last 55 years.
Frequently Asked Questions
What was the warmest July 11 ever in Naperville?
The warmest July 11 in Naperville, IL reached 98°F in 1989. That is 13°F above the long-term average high of 85°F.
What was the coldest July 11 ever in Naperville?
The coldest July 11 in Naperville, IL dropped to 47°F in 1996. That is 14°F below the long-term average low of 61°F.
What is the average temperature on July 11 in Naperville?
On July 11, Naperville averages a high of 85°F and a low of 61°F based on 55 years of NOAA weather observations from WHEATON 3 SE.
How many years of weather data are available for July 11 in Naperville?
We have 55 years of weather records for July 11 in Naperville, IL, 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 Naperville
| Year | High | Low | Precip | Snow |
|---|---|---|---|---|
| 2025 | 86°F | 67°F | 2.64" | -- |
| 2024 | 84°F | 65°F | 0.64" | -- |
| 2023 | 84°F | 64°F | 0" | -- |
| 2022 | 86°F | 61°F | 0" | -- |
| 2021 | 75°F | 56°F | 0.58" | -- |
| 2020 | 84°F | 64°F | 0" | -- |
| 2019 | 94°F | 64°F | 0" | -- |
| 2018 | 86°F | 60°F | 0" | -- |
| 2017 | 85°F | 66°F | 0.1" | -- |
| 2016 | 84°F | 57°F | 0" | -- |
| 2015 | 82°F | 57°F | 0" | -- |
| 2014 | 80°F | 54°F | 0" | -- |
| 2013 | 85°F | 58°F | 0" | -- |
| 2012 | 84°F | 56°F | 0" | -- |
| 2011 | 91°F | 74°F | 0" | -- |
| 2010 | 88°F | 63°F | 0" | -- |
| 2009 | 82°F | 65°F | 2.08" | -- |
| 2008 | 82°F | 62°F | 2.16" | -- |
| 2007 | 86°F | 61°F | 0.53" | -- |
| 2006 | 76°F | 64°F | 0.18" | -- |
| 2005 | 92°F | 60°F | 0" | -- |
| 2004 | 86°F | 60°F | 0" | -- |
| 2003 | 79°F | 59°F | 0.13" | -- |
| 2002 | 80°F | 65°F | 0" | -- |
| 2001 | 95°F | 56°F | 0" | -- |
| 2000 | 86°F | 60°F | 0.1" | -- |
| 1999 | 83°F | 50°F | 0" | -- |
| 1998 | 86°F | 59°F | 0" | -- |
| 1997 | 85°F | 52°F | 0" | -- |
| 1996 | 83°F | 47°F | 0" | -- |
| 1995 | 92°F | 66°F | 0" | -- |
| 1994 | 83°F | 52°F | 0" | -- |
| 1993 | 86°F | 68°F | 0" | -- |
| 1992 | 85°F | 60°F | 0" | -- |
| 1991 | 86°F | 60°F | 0" | -- |
| 1990 | 75°F | 63°F | 1.75" | -- |
| 1989 | 98°F | 69°F | 0" | -- |
| 1988 | 90°F | 60°F | 0" | -- |
| 1987 | 93°F | 68°F | 0" | -- |
| 1986 | 77°F | 68°F | 3.56" | -- |
| 1985 | 84°F | 59°F | 0" | -- |
| 1984 | 95°F | 64°F | 3.05" | -- |
| 1983 | 91°F | 64°F | 0" | -- |
| 1982 | 80°F | 69°F | 2.21" | -- |
| 1981 | 89°F | 57°F | 0" | -- |
| 1980 | 92°F | 65°F | 0" | -- |
| 1979 | 89°F | 64°F | 0" | -- |
| 1978 | 75°F | 48°F | 0" | -- |
| 1977 | 87°F | 65°F | 0.05" | -- |
| 1976 | 98°F | 75°F | 0" | -- |
| 1975 | 76°F | 49°F | 0" | -- |
| 1974 | 82°F | 66°F | 0" | -- |
| 1973 | 86°F | 57°F | 0" | -- |
| 1972 | 92°F | 69°F | 0" | -- |
| 1971 | 82°F | 64°F | 0.36" | -- |
Based on 55 years of data from NOAA station: WHEATON 3 SE
Monthly Climate Averages
Historical temperature and precipitation averages for Naperville, IL, based on 55+ years of weather data.
Temperatures in Fahrenheit. Precipitation and snowfall in inches.