Weather on May 31
Rockford, IL
55 Years of Data
Avg High
77°F
Avg Low
54°F
Warmest
2018
77°F avg
Coldest
2012
49°F avg
About This Date
May 31st in Rockford, IL typically brings pleasant spring weather, with average highs around 77°F and lows near 54°F. Over 55 years of records, the warmest May 31st was in 2018 (77°F average), while the coldest was 2012 (49°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 33% of May 31st dates historically, with the wettest May 31st recording 3.89" of rain. The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
The last decade has been 5.2°F warmer on this date compared to 20-30 years ago.
Planning for May 31st in Rockford, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 74° | 46° | 60° | — | — |
| 2024 | 81° | 47° | 64° | — | — |
| 2023 | 89° | 60° | 75° | 0.13" | — |
| 2022 | 85° | 68° | 76° | 0.03" | — |
| 2021 | 70° | 52° | 61° | — | — |
| 2020 | 74° | 47° | 60° | — | — |
| 2019 | 82° | 58° | 70° | — | — |
| 2018warmest | 87° | 66° | 77° | — | — |
| 2017 | 74° | 50° | 62° | — | — |
| 2016 | 81° | 64° | 72° | 1.42" | — |
| 2015 | 65° | 42° | 53° | — | — |
| 2014 | 91° | 60° | 76° | — | — |
| 2013 | 75° | 62° | 69° | 0.28" | — |
| 2012coldest | 52° | 46° | 49° | 2.49" | — |
| 2011 | 81° | 67° | 74° | — | — |
| 2010 | 78° | 62° | 70° | 0.41" | — |
| 2009 | 74° | 44° | 59° | — | — |
| 2008 | 80° | 61° | 70° | — | — |
| 2007 | 79° | 64° | 71° | 0.61" | — |
| 2006 | 77° | 64° | 71° | — | — |
| 2005 | 79° | 46° | 62° | — | — |
| 2004 | 68° | 57° | 63° | 3.35" | — |
| 2003 | 62° | 42° | 52° | 0.03" | — |
| 2002 | 83° | 57° | 70° | — | — |
| 2001 | 61° | 47° | 54° | 1.93" | — |
| 2000 | 74° | 62° | 68° | 3.89" | — |
| 1999 | 79° | 62° | 70° | — | — |
| 1998 | 78° | 56° | 67° | — | — |
| 1997 | 72° | 48° | 60° | — | — |
| 1996 | 74° | 44° | 59° | — | — |
| 1995 | 83° | 51° | 67° | — | — |
| 1994 | 82° | 61° | 71° | — | — |
| 1993 | 67° | 41° | 54° | — | — |
| 1992 | 84° | 45° | 64° | — | — |
| 1991 | 86° | 67° | 76° | 0.38" | — |
| 1990 | 77° | 42° | 60° | — | — |
| 1989 | 83° | 68° | 75° | 2.01" | — |
| 1988 | 92° | 57° | 74° | — | — |
| 1987 | 86° | 60° | 73° | 0.03" | — |
| 1986 | 86° | 60° | 73° | — | — |
| 1985 | 77° | 61° | 69° | — | — |
| 1984 | 74° | 43° | 58° | — | — |
| 1983 | 60° | 45° | 52° | 0.03" | — |
| 1982 | 74° | 57° | 65° | 0.81" | — |
| 1981 | 75° | 45° | 60° | — | — |
| 1980 | 78° | 59° | 69° | — | — |
| 1979 | 79° | 60° | 69° | — | — |
| 1978 | 90° | 54° | 72° | — | — |
| 1977 | 80° | 60° | 70° | 0.2" | — |
| 1976 | 72° | 58° | 65° | — | — |
| 1975 | 70° | 52° | 61° | 0.03" | — |
| 1974 | 71° | 51° | 61° | — | — |
| 1973 | 78° | 48° | 63° | — | — |
| 1972 | 66° | 42° | 54° | — | — |
| 1971 | 79° | 50° | 64° | — | — |
55 years of data from ROCKFORD GTR ROCKFORD AP