Weather on August 17
Rockford, IL
55 Years of Data
Avg High
82°F
Avg Low
61°F
Warmest
1988
89°F avg
Coldest
1992
61°F avg
About This Date
August 17th 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 17th was in 1988 (89°F average), while the coldest was 1992 (61°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 38% of August 17th dates historically, with the wettest August 17th recording 5.16" of rain. The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.3°F warmer on this date compared to 20-30 years ago.
Planning for August 17th 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 | 85° | 69° | 77° | 0.05" | — |
| 2024 | 81° | 68° | 74° | — | — |
| 2023 | 77° | 58° | 67° | 0.1" | — |
| 2022 | 84° | 55° | 70° | — | — |
| 2021 | 83° | 57° | 70° | — | — |
| 2020 | 88° | 63° | 75° | — | — |
| 2019 | 79° | 61° | 70° | 0.23" | — |
| 2018 | 82° | 64° | 73° | — | — |
| 2017 | 81° | 68° | 74° | 0.13" | — |
| 2016 | 86° | 68° | 77° | — | — |
| 2015 | 91° | 66° | 79° | 1.09" | — |
| 2014 | 79° | 62° | 70° | — | — |
| 2013 | 81° | 54° | 67° | — | — |
| 2012 | 76° | 53° | 64° | — | — |
| 2011 | 83° | 62° | 72° | — | — |
| 2010 | 73° | 60° | 67° | — | — |
| 2009 | 81° | 69° | 75° | 1.27" | — |
| 2008 | 84° | 59° | 72° | — | — |
| 2007 | 79° | 58° | 68° | — | — |
| 2006 | 75° | 57° | 66° | 0.03" | — |
| 2005 | 84° | 56° | 70° | — | — |
| 2004 | 77° | 60° | 69° | 0.15" | — |
| 2003 | 88° | 66° | 77° | — | — |
| 2002 | 87° | 60° | 74° | 0.08" | — |
| 2001 | 79° | 56° | 67° | — | — |
| 2000 | 72° | 58° | 65° | 2.9" | — |
| 1999 | 85° | 62° | 73° | — | — |
| 1998 | 80° | 66° | 73° | 0.36" | — |
| 1997 | 74° | 59° | 66° | 2.92" | — |
| 1996 | 80° | 60° | 70° | — | — |
| 1995 | 89° | 71° | 80° | 0.43" | — |
| 1994 | 81° | 57° | 69° | — | — |
| 1993 | 84° | 68° | 76° | — | — |
| 1992coldest | 76° | 47° | 61° | — | — |
| 1991 | 81° | 63° | 72° | 0.28" | — |
| 1990 | 77° | 69° | 73° | 1.09" | — |
| 1989 | 79° | 52° | 65° | — | — |
| 1988warmest | 102° | 75° | 89° | — | — |
| 1987 | 81° | 65° | 73° | — | — |
| 1986 | 82° | 64° | 73° | 0.03" | — |
| 1985 | 85° | 63° | 74° | 0.28" | — |
| 1984 | 74° | 65° | 69° | 1.83" | — |
| 1983 | 97° | 73° | 85° | 0.05" | — |
| 1982 | 82° | 60° | 71° | — | — |
| 1981 | 75° | 51° | 63° | — | — |
| 1980 | 73° | 60° | 67° | 0.13" | — |
| 1979 | 80° | 61° | 70° | 5.16" | — |
| 1978 | 84° | 62° | 73° | — | — |
| 1977 | 75° | 56° | 65° | — | — |
| 1976 | 78° | 49° | 63° | — | — |
| 1975 | 84° | 60° | 72° | — | — |
| 1974 | 82° | 60° | 71° | — | — |
| 1973 | 85° | 63° | 74° | — | — |
| 1972 | 91° | 73° | 82° | — | — |
| 1971 | 84° | 53° | 69° | — | — |
55 years of data from ROCKFORD GTR ROCKFORD AP