Weather on February 9
Naperville, IL
55 Years of Data
Avg High
33°F
Avg Low
14°F
Warmest
2024
48°F avg
Coldest
1975
0°F avg
About This Date
February 9th in Naperville, IL typically brings cold winter weather, with average highs around 33°F and lows near 14°F. Over 56 years of records, the warmest February 9th was in 2024 (48°F average), while the coldest was 1975 (0°F) — a 48°F range across recorded history. Precipitation has occurred on 20% of recorded February 9th dates, with snow falling 14% of the time (heaviest snowfall: 7.7"). The last decade has been 10.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 10.6°F cooler on this date compared to 20-30 years ago.
Planning for February 9th in Naperville, IL? Bundle up with warm layers and protect extremities from the cold.
Warming Trend
1.9°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 29° | 18° | 23° | — | — |
| 2025 | 30° | 20° | 25° | — | — |
| 2024warmest | 58° | 39° | 48° | 0.05" | — |
| 2023 | 42° | 21° | 32° | 1.5" | — |
| 2022 | 37° | 17° | 27° | — | — |
| 2021 | 14° | 0° | 7° | 0.23" | 1.8" |
| 2020 | 37° | 22° | 29° | — | — |
| 2019 | 17° | 3° | 10° | — | — |
| 2018 | 27° | 9° | 18° | 1.6" | 7.7" |
| 2017 | 29° | 13° | 21° | — | — |
| 2016 | 30° | 16° | 23° | 0.13" | 0.8" |
| 2015 | 38° | 25° | 31° | — | — |
| 2014 | 16° | 4° | 10° | 0.18" | 2.1" |
| 2013 | 28° | 24° | 26° | — | — |
| 2012 | 36° | 20° | 28° | — | — |
| 2011 | 18° | 1° | 9° | — | — |
| 2010 | 24° | 21° | 23° | 0.23" | 1.7" |
| 2009 | 58° | 22° | 40° | — | — |
| 2008 | 38° | 27° | 32° | — | — |
| 2007 | 18° | -5° | 6° | — | — |
| 2006 | 33° | 11° | 22° | — | — |
| 2005 | 31° | 24° | 27° | 0.03" | 0.6" |
| 2004 | 32° | 22° | 27° | — | — |
| 2003 | 30° | 0° | 15° | — | — |
| 2002 | 55° | 25° | 40° | — | — |
| 2001 | 55° | 34° | 44° | 2.77" | — |
| 2000 | 52° | 28° | 40° | — | — |
| 1999 | 59° | 35° | 47° | — | — |
| 1998 | 47° | 22° | 34° | — | — |
| 1997 | 38° | 26° | 32° | — | — |
| 1996 | 49° | 29° | 39° | — | — |
| 1995 | 36° | 11° | 23° | — | — |
| 1994 | 20° | 6° | 13° | 0.33" | 2.5" |
| 1993 | 38° | 28° | 33° | — | — |
| 1992 | 28° | 7° | 17° | — | — |
| 1991 | 47° | 23° | 35° | — | — |
| 1990 | 60° | 33° | 47° | — | — |
| 1989 | 14° | -4° | 5° | — | — |
| 1988 | 25° | 12° | 18° | — | — |
| 1987 | 37° | 35° | 36° | — | — |
| 1986 | 28° | 5° | 17° | — | — |
| 1985 | 25° | 3° | 14° | — | — |
| 1984 | 46° | 20° | 33° | — | — |
| 1983 | 38° | 28° | 33° | — | — |
| 1982 | 21° | 4° | 12° | — | — |
| 1981 | 25° | 4° | 14° | — | — |
| 1980 | 32° | 20° | 26° | 0.05" | 0.5" |
| 1979 | 11° | -11° | 0° | — | — |
| 1978 | 30° | 17° | 24° | — | — |
| 1977 | 43° | 18° | 30° | — | — |
| 1976 | 42° | 13° | 27° | — | — |
| 1975coldest | 10° | -10° | 0° | — | — |
| 1974 | 26° | -6° | 10° | — | — |
| 1973 | 24° | -5° | 10° | — | — |
| 1972 | 24° | -10° | 7° | — | — |
| 1971 | 12° | -6° | 3° | — | — |
56 years of data from LISLE - MORTON ARBORETUM