Weather on August 26
Naperville, IL
55 Years of Data
About This Date
August 26th in Naperville, IL typically brings warm summer weather, with average highs around 85°F and lows near 62°F. Over 54 years of records, the warmest August 26th was in 1993 (83°F average), while the coldest was 2025 (60°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 24% of August 26th dates historically, with the wettest August 26th recording 13.94" of rain. The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for August 26th in Naperville, IL? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025coldest | 74° | 47° | 60° | — | — |
| 2024 | 90° | 69° | 79° | — | — |
| 2023 | 81° | 65° | 73° | — | — |
| 2022 | 81° | 65° | 73° | 0.56" | — |
| 2021 | 94° | 67° | 80° | 0.23" | — |
| 2020 | 92° | 68° | 80° | — | — |
| 2019 | 78° | 56° | 67° | 0.46" | — |
| 2018 | — | 65° | — | — | — |
| 2017 | 75° | 50° | 63° | — | — |
| 2016 | 85° | 61° | 73° | — | — |
| 2015 | 72° | 51° | 61° | — | — |
| 2014 | 89° | 69° | 79° | 0.03" | — |
| 2013 | 88° | 55° | 71° | — | — |
| 2012 | 95° | 61° | 78° | — | — |
| 2011 | 82° | 54° | 68° | — | — |
| 2010 | 84° | 54° | 69° | — | — |
| 2009 | 74° | 64° | 69° | 4.01" | — |
| 2008 | 74° | 49° | 61° | — | — |
| 2007 | 81° | 56° | 68° | — | — |
| 2006 | 83° | 68° | 75° | — | — |
| 2005 | 84° | 63° | 73° | — | — |
| 2004 | 81° | 67° | 74° | 2.06" | — |
| 2003 | 92° | 73° | 82° | — | — |
| 2002 | 86° | 64° | 75° | — | — |
| 2001 | 88° | 67° | 77° | 2.16" | — |
| 2000 | 87° | 63° | 75° | — | — |
| 1999 | 83° | 60° | 71° | 0.48" | — |
| 1998 | 89° | 59° | 74° | — | — |
| 1997 | 84° | 55° | 70° | — | — |
| 1996 | 85° | 60° | 72° | — | — |
| 1995 | 90° | 68° | 79° | — | — |
| 1994 | 87° | 68° | 78° | — | — |
| 1993warmest | 95° | 72° | 83° | — | — |
| 1992 | 91° | 62° | 77° | 2.77" | — |
| 1991 | 96° | 66° | 81° | — | — |
| 1990 | 86° | 69° | 78° | — | — |
| 1989 | 81° | 64° | 72° | — | — |
| 1988 | 80° | 51° | 66° | — | — |
| 1987 | 67° | 57° | 62° | 6.1" | — |
| 1985 | 80° | 55° | 68° | — | — |
| 1984 | 87° | 56° | 71° | — | — |
| 1983 | 88° | 73° | 80° | 0.38" | — |
| 1982 | 78° | 53° | 66° | — | — |
| 1981 | 82° | 65° | 73° | — | — |
| 1980 | 90° | 60° | 75° | — | — |
| 1979 | 80° | 58° | 69° | — | — |
| 1978 | 84° | 67° | 75° | 0.13" | — |
| 1977 | 84° | 61° | 72° | — | — |
| 1976 | 87° | 66° | 77° | — | — |
| 1975 | 85° | 61° | 73° | — | — |
| 1974 | 91° | 59° | 75° | — | — |
| 1973 | 95° | 69° | 82° | — | — |
| 1972 | 81° | 65° | 73° | 13.94" | — |
| 1971 | 84° | 54° | 69° | — | — |
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.