Weather on May 20
Rockford, IL
55 Years of Data
Avg High
74°F
Avg Low
50°F
Warmest
1975
77°F avg
Coldest
2002
42°F avg
About This Date
May 20th in Rockford, IL typically brings pleasant spring weather, with average highs around 74°F and lows near 50°F. Over 55 years of records, the warmest May 20th was in 1975 (77°F average), while the coldest was 2002 (42°F) — a 35°F range across recorded history. Rain or other precipitation has occurred on about 35% of May 20th dates historically, with the wettest May 20th recording 5.44" of rain. The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 1.3°F warmer on this date compared to 20-30 years ago.
Planning for May 20th in Rockford, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
Cooling Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 54° | 48° | 51° | 2.67" | — |
| 2024 | 83° | 63° | 73° | — | — |
| 2023 | 73° | 45° | 59° | — | — |
| 2022 | 77° | 59° | 68° | 0.03" | — |
| 2021 | 84° | 66° | 75° | — | — |
| 2020 | 67° | 55° | 61° | — | — |
| 2019 | 57° | 44° | 51° | — | — |
| 2018 | 64° | 45° | 54° | 1.68" | — |
| 2017 | 63° | 47° | 55° | 1.35" | — |
| 2016 | 70° | 48° | 59° | — | — |
| 2015 | 47° | 40° | 43° | 0.89" | — |
| 2014 | 85° | 58° | 71° | 0.81" | — |
| 2013 | 85° | 64° | 74° | 0.58" | — |
| 2012 | 91° | 60° | 76° | 0.08" | — |
| 2011 | 79° | 53° | 66° | — | — |
| 2010 | 75° | 47° | 61° | 0.08" | — |
| 2009 | 83° | 53° | 68° | — | — |
| 2008 | 67° | 49° | 58° | — | — |
| 2007 | 69° | 46° | 58° | — | — |
| 2006 | 73° | 40° | 56° | — | — |
| 2005 | 70° | 51° | 60° | — | — |
| 2004 | 83° | 65° | 74° | — | — |
| 2003 | 65° | 47° | 56° | 0.03" | — |
| 2002coldest | 51° | 32° | 42° | — | — |
| 2001 | 80° | 52° | 66° | 1.32" | — |
| 2000 | 63° | 40° | 51° | — | — |
| 1999 | 79° | 52° | 65° | — | — |
| 1998 | 76° | 57° | 66° | 0.08" | — |
| 1997 | 63° | 42° | 52° | — | — |
| 1996 | 69° | 54° | 61° | 5.44" | — |
| 1995 | 72° | 51° | 61° | — | — |
| 1994 | 84° | 43° | 63° | — | — |
| 1993 | 62° | 40° | 51° | — | — |
| 1992 | 87° | 51° | 69° | — | — |
| 1991 | 78° | 50° | 64° | — | — |
| 1990 | 55° | 48° | 52° | — | — |
| 1989 | 75° | 50° | 63° | — | — |
| 1988 | 83° | 46° | 64° | — | — |
| 1987 | 80° | 63° | 71° | 3.07" | — |
| 1986 | 64° | 39° | 52° | — | — |
| 1985 | 72° | 48° | 60° | 0.1" | — |
| 1984 | 77° | 57° | 67° | — | — |
| 1983 | 67° | 51° | 59° | 0.1" | — |
| 1982 | 76° | 44° | 60° | — | — |
| 1981 | 78° | 34° | 56° | — | — |
| 1980 | 77° | 45° | 61° | — | — |
| 1979 | 74° | 45° | 59° | — | — |
| 1978 | 77° | 49° | 63° | — | — |
| 1977 | 88° | 66° | 77° | 0.41" | — |
| 1976 | 79° | 56° | 67° | — | — |
| 1975warmest | 87° | 67° | 77° | 2.29" | — |
| 1974 | 79° | 57° | 68° | 0.15" | — |
| 1973 | 71° | 46° | 59° | — | — |
| 1972 | 89° | 56° | 72° | — | — |
| 1971 | 68° | 42° | 55° | — | — |
55 years of data from ROCKFORD GTR ROCKFORD AP