Weather on February 15
Joliet, IL
55 Years of Data
Avg High
37°F
Avg Low
18°F
Warmest
2026
44°F avg
Coldest
2021
0°F avg
About This Date
February 15th in Joliet, IL typically brings cold winter weather, with average highs around 37°F and lows near 18°F. Over 55 years of records, the warmest February 15th was in 2026 (44°F average), while the coldest was 2021 (0°F) — a 44°F range across recorded history. Precipitation has occurred on 31% of recorded February 15th dates, with snow falling 7% of the time (heaviest snowfall: 3"). The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.6°F cooler on this date compared to 20-30 years ago.
Planning for February 15th in Joliet, IL? Bundle up with warm layers and protect extremities from the cold. Consider bringing rain gear or an umbrella.
Cooling Trend
0.4°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 63° | 25° | 44° | — | — |
| 2025 | 36° | 23° | 30° | — | — |
| 2024 | 46° | 26° | 36° | 0.05" | — |
| 2023 | 53° | 33° | 43° | 0.13" | — |
| 2022 | 25° | 12° | 18° | — | — |
| 2021coldest | 4° | -4° | 0° | 0.1" | 1" |
| 2020 | 19° | -5° | 7° | — | — |
| 2019 | 47° | 10° | 28° | — | — |
| 2018 | 43° | 22° | 32° | — | — |
| 2017 | 50° | 28° | 39° | — | — |
| 2016 | 21° | 13° | 17° | 0.13" | 3" |
| 2015 | 23° | -1° | 11° | — | — |
| 2014 | 18° | 2° | 10° | — | — |
| 2013 | 39° | 28° | 34° | — | — |
| 2012 | 36° | 28° | 32° | — | — |
| 2011 | 44° | 28° | 36° | — | — |
| 2010 | 28° | 8° | 18° | — | — |
| 2009 | 33° | 19° | 26° | — | — |
| 2008 | 37° | 15° | 26° | — | — |
| 2007 | 20° | 2° | 11° | — | — |
| 2006 | 56° | 26° | 41° | — | — |
| 2005 | 45° | 37° | 41° | 0.15" | — |
| 2004 | 34° | 18° | 26° | — | — |
| 2003 | 39° | 24° | 32° | 0.64" | 3" |
| 2002 | 46° | 29° | 37° | — | — |
| 2001 | 53° | 15° | 34° | — | — |
| 2000 | 31° | 22° | 26° | — | — |
| 1999 | 46° | 22° | 34° | — | — |
| 1998 | 40° | 31° | 35° | — | — |
| 1997 | 32° | 13° | 22° | — | — |
| 1996 | 34° | 18° | 26° | — | — |
| 1995 | 33° | 8° | 21° | 0.03" | — |
| 1994 | 47° | 26° | 36° | — | — |
| 1993 | 28° | 17° | 23° | — | — |
| 1992 | 36° | 31° | 33° | 0.74" | — |
| 1991 | 30° | 4° | 17° | 0.38" | — |
| 1990 | 31° | 26° | 28° | 2.16" | — |
| 1989 | 35° | 22° | 28° | 0.13" | — |
| 1988 | 40° | 23° | 31° | 0.79" | — |
| 1987 | 40° | 21° | 30° | — | — |
| 1986 | 28° | -7° | 11° | 0.15" | — |
| 1985 | 19° | -3° | 8° | — | — |
| 1984 | 56° | 31° | 43° | — | — |
| 1983 | 49° | 28° | 38° | — | — |
| 1982 | 39° | 18° | 28° | — | — |
| 1981 | 39° | 15° | 27° | — | — |
| 1980 | 37° | 26° | 32° | 0.38" | — |
| 1979 | 28° | 18° | 23° | — | — |
| 1978 | 29° | 17° | 23° | — | — |
| 1977 | 30° | 11° | 20° | — | — |
| 1976 | 56° | 29° | 42° | 0.08" | — |
| 1974 | 34° | 17° | 25° | — | — |
| 1973 | — | 19° | — | 0.36" | 3" |
| 1972 | 44° | 22° | 33° | 0.23" | — |
| 1971 | 36° | 24° | 30° | — | — |
55 years of data from JOLIET