Weather on February 18
Joliet, IL
55 Years of Data
Avg High
36°F
Avg Low
20°F
Warmest
2026
58°F avg
Coldest
1979
5°F avg
About This Date
February 18th in Joliet, IL typically brings cold winter weather, with average highs around 36°F and lows near 20°F. Over 55 years of records, the warmest February 18th was in 2026 (58°F average), while the coldest was 1979 (5°F) — a 53°F range across recorded history. Precipitation has occurred on 27% of recorded February 18th dates, with snow falling 11% of the time (heaviest snowfall: 5.5"). Temperatures on this date have remained relatively stable over the past several decades.
Temperatures on this date have remained relatively stable over the past several decades.
Planning for February 18th in Joliet, IL? Bundle up with warm layers and protect extremities from the cold.
Cooling Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 66° | 50° | 58° | 0.08" | — |
| 2025 | 15° | -2° | 6° | — | — |
| 2024 | 26° | 12° | 19° | — | — |
| 2023 | 30° | 20° | 25° | — | — |
| 2022 | 32° | 4° | 18° | 0.38" | — |
| 2021 | 19° | -2° | 9° | 0.13" | 1.5" |
| 2020 | 37° | 31° | 34° | — | — |
| 2019 | 27° | 22° | 24° | 0.51" | 1" |
| 2018 | 34° | 14° | 24° | 0.08" | 0.5" |
| 2017 | 67° | 31° | 49° | — | — |
| 2016 | 34° | 23° | 28° | — | — |
| 2015 | 19° | 4° | 11° | — | — |
| 2014 | 32° | 20° | 26° | 1.04" | 5.5" |
| 2013 | 32° | 8° | 20° | — | — |
| 2012 | 50° | 26° | 38° | — | — |
| 2011 | 59° | 38° | 48° | — | — |
| 2010 | 33° | 27° | 30° | — | — |
| 2009 | 41° | 27° | 34° | 0.61" | — |
| 2008 | 52° | 28° | 40° | 0.2" | — |
| 2007 | 25° | 10° | 17° | 0.05" | 0.2" |
| 2006 | 26° | -6° | 10° | — | — |
| 2005 | 28° | 12° | 20° | — | — |
| 2004 | 35° | 18° | 26° | — | — |
| 2003 | 30° | 22° | 26° | — | — |
| 2002 | 38° | 26° | 32° | — | — |
| 2001 | 20° | 7° | 13° | — | — |
| 2000 | 35° | 25° | 30° | 0.43" | 0.7" |
| 1999 | 29° | 21° | 25° | — | — |
| 1998 | 46° | 38° | 42° | 0.66" | — |
| 1997 | 45° | 17° | 31° | — | — |
| 1996 | 31° | 10° | 20° | — | — |
| 1995 | 48° | 17° | 33° | — | — |
| 1994 | 54° | 37° | 45° | — | — |
| 1993 | 16° | -1° | 8° | — | — |
| 1992 | 43° | 33° | 38° | 0.48" | — |
| 1991 | 42° | 31° | 36° | — | — |
| 1990 | 29° | 18° | 23° | — | — |
| 1989 | 31° | 17° | 24° | — | — |
| 1988 | 38° | 22° | 30° | — | — |
| 1987 | 39° | 23° | 31° | — | — |
| 1986 | 38° | 30° | 34° | — | — |
| 1985 | 37° | 19° | 28° | — | — |
| 1984 | 43° | 36° | 39° | — | — |
| 1983 | 38° | 32° | 35° | — | — |
| 1982 | 39° | 32° | 36° | — | — |
| 1981 | 52° | 37° | 44° | — | — |
| 1980 | 17° | -6° | 6° | — | — |
| 1979coldest | 11° | -1° | 5° | — | — |
| 1978 | 17° | -4° | 7° | — | — |
| 1977 | 37° | 16° | 26° | — | — |
| 1976 | 52° | 35° | 43° | 0.25" | — |
| 1974 | 50° | 33° | 42° | 0.46" | — |
| 1973 | — | 20° | — | — | — |
| 1972 | 37° | 20° | 28° | — | — |
| 1971 | 51° | 32° | 42° | 0.36" | — |
55 years of data from JOLIET