Weather on July 26
Naperville, IL
55 Years of Data
About This Date
July 26th in Naperville, IL typically brings warm summer weather, with average highs around 86°F and lows near 63°F. Over 55 years of records, the warmest July 26th was in 1997 (88°F average), while the coldest was 2004 (64°F) — a 24°F range across recorded history. Rain or other precipitation has occurred on about 25% of July 26th dates historically, with the wettest July 26th recording 3.25" of rain. The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.1°F cooler on this date compared to 20-30 years ago.
Planning for July 26th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 82° | 72° | 77° | 0.2" | — |
| 2024 | 78° | 54° | 66° | — | — |
| 2023 | 88° | 65° | 76° | — | — |
| 2022 | 79° | 59° | 69° | — | — |
| 2021 | 90° | 61° | 75° | — | — |
| 2020 | 88° | 62° | 75° | — | — |
| 2019 | 84° | 60° | 72° | — | — |
| 2018 | 87° | 68° | 78° | — | — |
| 2017 | 82° | 62° | 72° | — | — |
| 2016 | 88° | 65° | 76° | 0.03" | — |
| 2015 | 91° | 62° | 77° | — | — |
| 2014 | 75° | 59° | 67° | — | — |
| 2013 | 80° | 56° | 68° | 0.08" | — |
| 2012 | 99° | 71° | 85° | 0.48" | — |
| 2011 | 88° | 66° | 77° | — | — |
| 2010 | 88° | 58° | 73° | — | — |
| 2009 | 79° | 64° | 71° | — | — |
| 2008 | 80° | 64° | 72° | — | — |
| 2007 | 84° | 65° | 74° | 0.41" | — |
| 2006 | 89° | 70° | 79° | — | — |
| 2005 | 87° | 73° | 80° | 3.25" | — |
| 2004coldest | 74° | 55° | 64° | — | — |
| 2003 | 88° | 69° | 78° | — | — |
| 2002 | 86° | 72° | 79° | — | — |
| 2001 | 81° | 65° | 73° | — | — |
| 2000 | 86° | 60° | 73° | — | — |
| 1999 | 97° | 70° | 83° | — | — |
| 1998 | 85° | 55° | 70° | — | — |
| 1997warmest | 99° | 77° | 88° | — | — |
| 1996 | 82° | 56° | 69° | — | — |
| 1995 | 92° | 68° | 80° | 1.17" | — |
| 1994 | 83° | 53° | 68° | 0.13" | — |
| 1993 | 90° | 66° | 78° | — | — |
| 1992 | 85° | 72° | 78° | 0.3" | — |
| 1991 | 81° | 52° | 66° | — | — |
| 1990 | 86° | 61° | 73° | — | — |
| 1989 | 88° | 70° | 79° | — | — |
| 1988 | 88° | 63° | 75° | — | — |
| 1987 | 92° | 74° | 83° | — | — |
| 1986 | 88° | 63° | 75° | — | — |
| 1985 | 84° | 61° | 72° | 0.66" | — |
| 1984 | 78° | — | — | — | — |
| 1983 | 88° | 62° | 75° | — | — |
| 1982 | 90° | 69° | 79° | — | — |
| 1981 | 81° | 64° | 72° | — | — |
| 1980 | 87° | 65° | 76° | 1.22" | — |
| 1979 | 82° | 65° | 73° | 1.22" | — |
| 1978 | 87° | 65° | 76° | — | — |
| 1977 | 80° | 50° | 65° | 0.53" | — |
| 1976 | 88° | 60° | 74° | — | — |
| 1975 | 83° | 54° | 68° | — | — |
| 1974 | 89° | 60° | 75° | — | — |
| 1973 | 90° | 69° | 79° | — | — |
| 1972 | — | 57° | — | 0.23" | — |
| 1971 | 85° | 61° | 73° | — | — |
Naperville, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Naperville, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Naperville, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Naperville, IL
Naperville, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.