Weather on March 31
Naperville, IL
55 Years of Data
Avg High
58°F
Avg Low
33°F
Warmest
2026
67°F avg
Coldest
1987
30°F avg
About This Date
March 31st in Naperville, IL typically brings cool spring weather, with average highs around 58°F and lows near 33°F — a 25°F daily swing. Over 56 years of records, the warmest March 31st was in 2026 (67°F average), while the coldest was 1987 (30°F) — a 37°F range across recorded history. Precipitation has occurred on 36% of recorded March 31st dates, with snow falling 2% of the time (heaviest snowfall: 2.1"). 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 March 31st in Naperville, IL? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026warmest | 81° | 53° | 67° | 0.79" | — |
| 2025 | 75° | 31° | 53° | 0.69" | — |
| 2024 | 61° | 33° | 47° | — | — |
| 2023 | 55° | 26° | 41° | 0.3" | — |
| 2022 | 59° | 36° | 47° | 4.57" | — |
| 2021 | 68° | 32° | 50° | — | — |
| 2020 | 50° | 36° | 43° | — | — |
| 2019 | — | 23° | — | — | — |
| 2018 | 49° | 28° | 38° | — | — |
| 2017 | 42° | 36° | 39° | 2.13" | — |
| 2016 | 62° | 46° | 54° | 0.76" | — |
| 2015 | 63° | 35° | 49° | — | — |
| 2014 | 56° | 19° | 37° | — | — |
| 2013 | 58° | 24° | 41° | — | — |
| 2012 | 57° | 37° | 47° | 0.36" | — |
| 2011 | 47° | 18° | 32° | — | — |
| 2010 | 65° | 28° | 46° | — | — |
| 2009 | 48° | 24° | 36° | 0.05" | — |
| 2008 | 47° | 36° | 41° | 0.41" | — |
| 2007 | 65° | 47° | 56° | — | — |
| 2006 | 70° | 56° | 63° | 0.3" | — |
| 2005 | 75° | 43° | 59° | 1.3" | — |
| 2004 | 52° | 36° | 44° | 0.05" | — |
| 2003 | 56° | 20° | 38° | — | — |
| 2002 | 54° | 25° | 39° | — | — |
| 2001 | 59° | 33° | 46° | — | — |
| 2000 | 66° | 26° | 46° | — | — |
| 1999 | 73° | 43° | 58° | — | — |
| 1998 | 78° | 52° | 65° | 0.79" | — |
| 1997 | 57° | 26° | 42° | 0.3" | — |
| 1996 | 45° | 32° | 38° | — | — |
| 1995 | 43° | 34° | 38° | — | — |
| 1994 | 55° | 22° | 38° | — | — |
| 1993 | 68° | 42° | 55° | 1.19" | — |
| 1992 | 52° | 28° | 40° | — | — |
| 1991 | 56° | 31° | 43° | — | — |
| 1990 | 54° | 38° | 46° | — | — |
| 1989 | 49° | 34° | 41° | — | — |
| 1988 | 52° | 29° | 40° | — | — |
| 1987coldest | 43° | 17° | 30° | — | — |
| 1986 | 85° | 45° | 65° | — | — |
| 1985 | 38° | 35° | 36° | 1.09" | — |
| 1984 | 54° | 21° | 37° | — | — |
| 1983 | 46° | 35° | 41° | — | — |
| 1982 | 63° | 44° | 53° | 1.09" | — |
| 1981 | 83° | 35° | 59° | — | — |
| 1980 | 45° | 33° | 39° | 0.36" | — |
| 1979 | 64° | 34° | 49° | — | — |
| 1978 | 79° | 36° | 57° | — | — |
| 1977 | 58° | 38° | 48° | — | — |
| 1976 | 46° | 33° | 40° | — | — |
| 1975 | 60° | 19° | 40° | — | — |
| 1974 | 52° | 28° | 40° | — | — |
| 1973 | 52° | 38° | 45° | 1.24" | — |
| 1972 | 45° | 31° | 38° | 0.13" | 2.1" |
| 1971 | 74° | 38° | 56° | — | — |
56 years of data from WHEATON 3 SE