Weather on February 17
Naperville, IL
55 Years of Data
Avg High
38°F
Avg Low
18°F
Warmest
2026
50°F avg
Coldest
1979
7°F avg
About This Date
February 17th in Naperville, IL typically brings cold winter weather, with average highs around 38°F and lows near 18°F. Over 56 years of records, the warmest February 17th was in 2026 (50°F average), while the coldest was 1979 (7°F) — a 43°F range across recorded history. Precipitation has occurred on 32% of recorded February 17th dates, with snow falling 9% of the time (heaviest snowfall: 2"). The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
The last decade has been 1.7°F cooler on this date compared to 20-30 years ago.
Planning for February 17th in Naperville, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 67° | 33° | 50° | — | — |
| 2025 | 25° | -1° | 12° | — | — |
| 2024 | 29° | 9° | 19° | — | — |
| 2023 | 31° | 15° | 23° | 1.27" | 1.3" |
| 2022 | 54° | 29° | 41° | 2.54" | — |
| 2021 | 21° | -1° | 10° | — | — |
| 2020 | 43° | 12° | 27° | — | — |
| 2019 | 29° | 14° | 21° | — | — |
| 2018 | 45° | 11° | 28° | — | — |
| 2017 | 43° | 26° | 34° | — | — |
| 2016 | 35° | 19° | 27° | 0.13" | 0.8" |
| 2015 | 20° | 7° | 13° | 0.03" | — |
| 2014 | 28° | 22° | 25° | — | — |
| 2013 | 18° | 2° | 10° | — | — |
| 2012 | 48° | 24° | 36° | — | — |
| 2011 | 53° | 38° | 45° | — | — |
| 2010 | 35° | 26° | 31° | — | — |
| 2009 | 35° | 11° | 23° | — | — |
| 2008 | 44° | 22° | 33° | 1.3" | — |
| 2007 | 21° | 9° | 15° | 0.33" | 2" |
| 2006 | 35° | 18° | 26° | 2.24" | — |
| 2005 | 34° | 18° | 26° | — | — |
| 2004 | 37° | 12° | 25° | — | — |
| 2003 | 33° | 21° | 27° | — | — |
| 2002 | 46° | 26° | 36° | — | — |
| 2001 | 30° | 5° | 18° | — | — |
| 2000 | 39° | 15° | 27° | — | — |
| 1999 | 38° | 27° | 32° | 0.13" | — |
| 1998 | 44° | 38° | 41° | 0.15" | — |
| 1997 | 43° | 8° | 25° | — | — |
| 1996 | 31° | 20° | 25° | — | — |
| 1995 | 49° | 13° | 31° | — | — |
| 1994 | 55° | 30° | 43° | — | — |
| 1993 | 31° | 6° | 18° | 0.03" | — |
| 1992 | 41° | 35° | 38° | — | — |
| 1991 | 43° | 9° | 26° | — | — |
| 1990 | — | 12° | — | — | — |
| 1989 | 30° | 8° | 19° | — | — |
| 1988 | 41° | 17° | 29° | — | — |
| 1987 | 39° | 23° | 31° | — | — |
| 1986 | 38° | 28° | 33° | 1.37" | 1" |
| 1985 | 40° | 10° | 25° | — | — |
| 1984 | 47° | 40° | 43° | — | — |
| 1983 | 38° | 33° | 35° | 0.41" | — |
| 1982 | 38° | 31° | 34° | 0.03" | — |
| 1981 | 53° | 36° | 44° | — | — |
| 1980 | — | -9° | — | — | — |
| 1979coldest | 15° | -1° | 7° | — | — |
| 1978 | 21° | -6° | 8° | 0.05" | 0.3" |
| 1977 | 37° | 5° | 21° | — | — |
| 1976 | 45° | 32° | 38° | 0.08" | — |
| 1975 | 36° | 31° | 33° | 1.8" | — |
| 1974 | 46° | 18° | 32° | — | — |
| 1973 | 26° | -3° | 12° | — | — |
| 1972 | 44° | 32° | 38° | 0.05" | — |
| 1971 | 48° | 32° | 40° | 0.13" | — |
56 years of data from WHEATON 3 SE