Weather on May 20
Rockford, IL
55 Years of Data
About This Date
May 20th in Rockford, IL typically brings pleasant spring weather, with average highs around 73°F and lows near 50°F. Over 56 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 34% of May 20th dates historically, with the wettest May 20th recording 5.44" of rain. 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 May 20th in Rockford, IL? Great weather for outdoor activities. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2026 | 68° | 42° | 55° | — | — |
| 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° | — | — |
Rockford, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Rockford, IL Monthly Precipitation
Average rainfall and snowfall per month, in inches.
Rockford, IL Daily Temperature Calendar
Average daily high temperature for every day of the year. Each cell is the climatological mean for that calendar day across 55 years of NOAA data.
Best Time to Visit Rockford, IL
Rockford, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.