Weather on August 20
Rockford, IL
55 Years of Data
Avg High
82°F
Avg Low
61°F
Warmest
1983
83°F avg
Coldest
1985
60°F avg
About This Date
August 20th in Rockford, IL typically brings warm summer weather, with average highs around 82°F and lows near 61°F. Over 55 years of records, the warmest August 20th was in 1983 (83°F average), while the coldest was 1985 (60°F) — a 23°F range across recorded history. Rain or other precipitation has occurred on about 33% of August 20th dates historically, with the wettest August 20th recording 2.46" of rain. The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.7°F warmer on this date compared to 20-30 years ago.
Planning for August 20th in Rockford, IL? Stay hydrated and seek shade during peak afternoon hours. Consider bringing rain gear or an umbrella.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 81° | 61° | 71° | 0.08" | — |
| 2024 | 74° | 54° | 64° | — | — |
| 2023 | 91° | 68° | 80° | — | — |
| 2022 | 75° | 64° | 70° | 0.33" | — |
| 2021 | 89° | 66° | 78° | — | — |
| 2020 | 84° | 57° | 71° | — | — |
| 2019 | 79° | 66° | 72° | 1.27" | — |
| 2018 | 77° | 68° | 73° | 1.7" | — |
| 2017 | 82° | 60° | 71° | — | — |
| 2016 | 78° | 61° | 69° | 1.07" | — |
| 2015 | 75° | 56° | 65° | — | — |
| 2014 | 86° | 62° | 74° | — | — |
| 2013 | 87° | 62° | 75° | — | — |
| 2012 | 79° | 52° | 65° | — | — |
| 2011 | 82° | 66° | 74° | 0.94" | — |
| 2010 | 91° | 71° | 81° | 0.05" | — |
| 2009 | 76° | 63° | 69° | 0.3" | — |
| 2008 | 84° | 64° | 74° | — | — |
| 2007 | 79° | 67° | 73° | 0.28" | — |
| 2006 | 81° | 55° | 68° | — | — |
| 2005 | 85° | 62° | 73° | 2.46" | — |
| 2004 | 75° | 52° | 63° | — | — |
| 2003 | 94° | 65° | 79° | 0.08" | — |
| 2002 | 79° | 54° | 66° | — | — |
| 2001 | 80° | 53° | 67° | — | — |
| 2000 | 74° | 58° | 66° | — | — |
| 1999 | 79° | 51° | 65° | — | — |
| 1998 | 86° | 59° | 73° | — | — |
| 1997 | 73° | 59° | 66° | 0.05" | — |
| 1996 | 80° | 68° | 74° | — | — |
| 1995 | 83° | 64° | 73° | — | — |
| 1994 | 74° | 62° | 68° | — | — |
| 1993 | 80° | 63° | 71° | — | — |
| 1992 | 78° | 50° | 64° | — | — |
| 1991 | 79° | 54° | 66° | — | — |
| 1990 | 77° | 67° | 72° | 0.64" | — |
| 1989 | 82° | 63° | 72° | — | — |
| 1988 | 84° | 60° | 72° | — | — |
| 1987 | 83° | 57° | 70° | — | — |
| 1986 | 84° | 53° | 69° | — | — |
| 1985coldest | 69° | 51° | 60° | — | — |
| 1984 | 80° | 54° | 67° | — | — |
| 1983warmest | 96° | 70° | 83° | — | — |
| 1982 | 83° | 62° | 72° | — | — |
| 1981 | 80° | 51° | 66° | — | — |
| 1980 | 93° | 72° | 82° | 0.38" | — |
| 1979 | 80° | 65° | 72° | 1.6" | — |
| 1978 | 80° | 52° | 66° | — | — |
| 1977 | 73° | 59° | 66° | 0.23" | — |
| 1976 | 86° | 56° | 71° | — | — |
| 1975 | 84° | 62° | 73° | 0.48" | — |
| 1974 | 86° | 66° | 76° | — | — |
| 1973 | 82° | 59° | 71° | — | — |
| 1972 | 83° | 70° | 76° | 0.3" | — |
| 1971 | 92° | 64° | 78° | — | — |
55 years of data from ROCKFORD GTR ROCKFORD AP