Weather on March 31
Joliet, IL
55 Years of Data
Avg High
56°F
Avg Low
36°F
Warmest
1998
69°F avg
Coldest
1987
27°F avg
About This Date
March 31st in Joliet, IL typically brings cool spring weather, with average highs around 56°F and lows near 36°F. Over 55 years of records, the warmest March 31st was in 1998 (69°F average), while the coldest was 1987 (27°F) — a 42°F range across recorded history. Rain or other precipitation has occurred on about 44% of March 31st dates historically, with the wettest March 31st recording 4.83" of rain. The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.8°F cooler on this date compared to 20-30 years ago.
Planning for March 31st in Joliet, IL? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 78° | 55° | 66° | — | — |
| 2025 | 51° | 37° | 44° | 0.36" | — |
| 2024 | 62° | 38° | 50° | — | — |
| 2023 | 58° | 27° | 42° | 0.13" | — |
| 2022 | 60° | 37° | 49° | 4.83" | — |
| 2021 | 66° | 34° | 50° | — | — |
| 2020 | 42° | 37° | 40° | — | — |
| 2019 | 45° | 24° | 34° | — | — |
| 2018 | 49° | 33° | 41° | — | — |
| 2017 | 48° | 37° | 43° | 1.83" | — |
| 2016 | 60° | 41° | 51° | 0.76" | — |
| 2015 | 63° | 32° | 47° | — | — |
| 2014 | 56° | 26° | 41° | — | — |
| 2013 | 58° | 30° | 44° | 0.03" | — |
| 2012 | 61° | 39° | 50° | 0.05" | — |
| 2011 | 48° | 25° | 36° | — | — |
| 2010 | 63° | 32° | 47° | — | — |
| 2009 | 51° | 28° | 40° | — | — |
| 2008 | 51° | 35° | 43° | 0.38" | — |
| 2007 | 58° | 48° | 53° | — | — |
| 2006 | 72° | 36° | 54° | 0.18" | — |
| 2005 | 76° | 46° | 61° | 0.25" | — |
| 2004 | 56° | 38° | 47° | 1.4" | — |
| 2003 | 46° | 27° | 36° | — | — |
| 2002 | 53° | 31° | 42° | — | — |
| 2001 | 54° | 39° | 46° | 0.03" | — |
| 2000 | 67° | 32° | 49° | — | — |
| 1999 | 72° | 40° | 56° | — | — |
| 1998warmest | 78° | 61° | 69° | 0.51" | — |
| 1997 | 48° | 34° | 41° | 0.1" | — |
| 1996 | 54° | 37° | 45° | — | — |
| 1995 | 45° | 30° | 37° | 0.03" | — |
| 1994 | 43° | 27° | 35° | — | — |
| 1993 | 68° | 40° | 54° | 0.33" | — |
| 1992 | 51° | 32° | 42° | — | — |
| 1991 | 43° | 32° | 37° | 0.03" | — |
| 1990 | 46° | 39° | 43° | — | — |
| 1989 | 51° | 36° | 43° | — | — |
| 1988 | 51° | 30° | 41° | 0.05" | — |
| 1987coldest | 37° | 18° | 27° | — | — |
| 1986 | 84° | 49° | 66° | — | — |
| 1985 | 40° | 36° | 38° | 0.64" | — |
| 1984 | 44° | 26° | 35° | — | — |
| 1983 | 42° | 35° | 39° | — | — |
| 1982 | 63° | 46° | 54° | 1.14" | — |
| 1981 | 60° | 45° | 52° | — | — |
| 1980 | 46° | 32° | 39° | 0.61" | — |
| 1979 | 65° | 38° | 51° | 0.66" | — |
| 1978 | 57° | 31° | 44° | — | — |
| 1977 | 53° | 39° | 46° | — | — |
| 1976 | 60° | 33° | 47° | 0.1" | — |
| 1974 | 53° | 31° | 42° | — | — |
| 1973 | 58° | 40° | 49° | 1.63" | — |
| 1972 | 45° | 32° | 38° | — | — |
| 1971 | 75° | 41° | 58° | — | — |
55 years of data from JOLIET