Weather on March 20
Naperville, IL
55 Years of Data
Avg High
52°F
Avg Low
30°F
Warmest
2012
70°F avg
Coldest
1986
23°F avg
About This Date
March 20th in Naperville, IL typically brings cool spring weather, with average highs around 52°F and lows near 30°F. Over 56 years of records, the warmest March 20th was in 2012 (70°F average), while the coldest was 1986 (23°F) — a 47°F range across recorded history. Precipitation has occurred on 32% of recorded March 20th dates, with snow falling 9% of the time (heaviest snowfall: 3.2"). The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
The last decade has been 4.8°F cooler on this date compared to 20-30 years ago.
Planning for March 20th in Naperville, IL? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Cooling Trend
0.3°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 68° | 32° | 50° | — | — |
| 2025 | 49° | 28° | 38° | 2.49" | 1.7" |
| 2024 | 58° | 27° | 42° | — | — |
| 2023 | 38° | 14° | 26° | — | — |
| 2022 | 42° | 26° | 34° | 0.13" | — |
| 2021 | 47° | 20° | 33° | — | — |
| 2020 | 62° | 39° | 51° | 1.17" | — |
| 2019 | 50° | 27° | 38° | — | — |
| 2018 | 47° | 28° | 37° | — | — |
| 2017 | 53° | 24° | 39° | 0.64" | — |
| 2016 | 45° | 27° | 36° | — | — |
| 2015 | 50° | 35° | 43° | — | — |
| 2014 | 44° | 29° | 36° | 0.3" | 0.5" |
| 2013 | 34° | 13° | 23° | — | — |
| 2012warmest | 78° | 63° | 70° | 0.03" | — |
| 2011 | 54° | 24° | 39° | — | — |
| 2010 | 65° | 31° | 48° | 0.38" | 1" |
| 2009 | 51° | 16° | 33° | — | — |
| 2008 | 49° | 22° | 35° | — | — |
| 2007 | 48° | 30° | 39° | — | — |
| 2006 | 48° | 21° | 35° | — | — |
| 2005 | 40° | 31° | 35° | — | — |
| 2004 | 63° | 47° | 55° | 0.2" | — |
| 2003 | 65° | 43° | 54° | 0.41" | — |
| 2002 | 53° | 37° | 45° | 0.15" | — |
| 2001 | 55° | 25° | 40° | — | — |
| 2000 | 58° | 37° | 47° | 0.81" | — |
| 1999 | 56° | 21° | 38° | — | — |
| 1998 | 38° | 32° | 35° | — | — |
| 1997 | 61° | 38° | 49° | — | — |
| 1996 | 42° | 29° | 35° | — | — |
| 1995 | 67° | 43° | 55° | 0.36" | — |
| 1994 | 58° | 41° | 49° | — | — |
| 1993 | 38° | 31° | 34° | 0.36" | 1.5" |
| 1992 | 45° | 26° | 35° | — | — |
| 1991 | 61° | 29° | 45° | — | — |
| 1990 | 62° | 33° | 48° | — | — |
| 1989 | 39° | 30° | 35° | — | — |
| 1988 | 41° | 21° | 31° | — | — |
| 1987 | 60° | 27° | 43° | — | — |
| 1986coldest | 38° | 8° | 23° | — | — |
| 1985 | 61° | 28° | 44° | — | — |
| 1984 | 38° | 31° | 34° | 2.06" | — |
| 1983 | 35° | 29° | 32° | — | — |
| 1982 | 46° | 34° | 40° | 2.13" | — |
| 1981 | 47° | 27° | 37° | — | — |
| 1980 | 59° | 34° | 46° | 0.36" | — |
| 1979 | 59° | 42° | 51° | 0.41" | — |
| 1978 | 52° | 22° | 37° | — | — |
| 1977 | 43° | 30° | 36° | 0.97" | 3.2" |
| 1976 | 74° | 59° | 66° | — | — |
| 1975 | 64° | 32° | 48° | — | — |
| 1974 | 45° | 17° | 31° | — | — |
| 1973 | 45° | 28° | 36° | — | — |
| 1972 | 70° | 38° | 54° | — | — |
| 1971 | 39° | 23° | 31° | — | — |
56 years of data from LISLE - MORTON ARBORETUM