Weather on March 31
Rockford, IL
55 Years of Data
Avg High
55°F
Avg Low
34°F
Warmest
1986
66°F avg
Coldest
1987
28°F avg
About This Date
March 31st in Rockford, IL typically brings cool spring weather, with average highs around 55°F and lows near 34°F. Over 56 years of records, the warmest March 31st was in 1986 (66°F average), while the coldest was 1987 (28°F) — a 38°F range across recorded history. Precipitation has occurred on 43% of recorded March 31st dates, with snow falling 11% of the time (heaviest snowfall: 1.5"). The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.3°F cooler on this date compared to 20-30 years ago.
Planning for March 31st in Rockford, IL? Bring layers as temperatures can vary throughout the day. Consider bringing rain gear or an umbrella.
Warming Trend
0.8°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 71° | 41° | 56° | 0.28" | — |
| 2025 | 50° | 33° | 42° | — | — |
| 2024 | 55° | 35° | 45° | 1.8" | — |
| 2023 | 70° | 41° | 55° | 2.01" | — |
| 2022 | 41° | 32° | 37° | 1.14" | 1.5" |
| 2021 | 44° | 31° | 38° | — | — |
| 2020 | 42° | 36° | 39° | — | — |
| 2019 | 42° | 22° | 32° | — | — |
| 2018 | 54° | 28° | 41° | 0.38" | — |
| 2017 | 45° | 34° | 39° | 0.13" | — |
| 2016 | 61° | 41° | 51° | 1.22" | — |
| 2015 | 62° | 36° | 49° | — | — |
| 2014 | 64° | 41° | 53° | — | — |
| 2013 | 57° | 32° | 45° | — | — |
| 2012 | 51° | 38° | 44° | — | — |
| 2011 | 51° | 23° | 37° | — | — |
| 2010 | 77° | 48° | 63° | — | — |
| 2009 | 55° | 39° | 47° | 1.09" | — |
| 2008 | 61° | 40° | 50° | 3.02" | — |
| 2007 | 64° | 46° | 55° | 1.19" | — |
| 2006 | 61° | 44° | 52° | 0.89" | — |
| 2005 | 59° | 37° | 48° | — | — |
| 2004 | 49° | 35° | 42° | — | — |
| 2003 | 56° | 24° | 40° | — | — |
| 2002 | 48° | 26° | 37° | 0.18" | 0.7" |
| 2001 | 57° | 32° | 45° | 0.41" | — |
| 2000 | 66° | 30° | 48° | — | — |
| 1999 | 73° | 42° | 58° | — | — |
| 1998 | 62° | 46° | 54° | 2.97" | — |
| 1997 | 53° | 33° | 43° | — | — |
| 1996 | 46° | 33° | 40° | 0.13" | — |
| 1995 | 40° | 27° | 33° | — | — |
| 1994 | 55° | 22° | 38° | — | — |
| 1993 | 52° | 32° | 42° | 3.02" | 0.2" |
| 1992 | 54° | 30° | 42° | — | — |
| 1991 | 53° | 32° | 43° | 0.2" | 0.5" |
| 1990 | 47° | 35° | 41° | 0.13" | — |
| 1989 | 37° | 28° | 33° | — | — |
| 1988 | 53° | 27° | 40° | — | — |
| 1987coldest | 41° | 16° | 28° | — | — |
| 1986warmest | 84° | 49° | 66° | — | — |
| 1985 | 46° | 31° | 38° | 1.14" | 0.1" |
| 1984 | 49° | 20° | 34° | — | — |
| 1983 | 44° | 37° | 41° | 0.15" | — |
| 1982 | 60° | 38° | 49° | — | — |
| 1981 | 81° | 34° | 57° | — | — |
| 1980 | 56° | 31° | 43° | 0.03" | — |
| 1979 | 38° | 28° | 33° | — | — |
| 1978 | 78° | 36° | 57° | — | — |
| 1977 | 43° | 34° | 38° | — | — |
| 1976 | 41° | 33° | 37° | 0.18" | — |
| 1975 | 56° | 24° | 40° | — | — |
| 1974 | 50° | 27° | 38° | — | — |
| 1973 | 43° | 40° | 41° | 2.08" | — |
| 1972 | 36° | 30° | 33° | 0.03" | 0.1" |
| 1971 | 71° | 41° | 56° | — | — |
56 years of data from ROCKFORD GTR ROCKFORD AP