Weather on August 12
Chicago, IL
55 Years of Data
Avg High
80°F
Avg Low
66°F
Warmest
1988
85°F avg
Coldest
2004
57°F avg
About This Date
August 12th in Chicago, IL typically brings warm summer weather, with average highs around 80°F and lows near 66°F. Over 53 years of records, the warmest August 12th was in 1988 (85°F average), while the coldest was 2004 (57°F) — a 28°F range across recorded history. Rain or other precipitation has occurred on about 11% of August 12th dates historically, with the wettest August 12th recording 2.03" of rain. The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
The last decade has been 2.6°F warmer on this date compared to 20-30 years ago.
Planning for August 12th in Chicago, IL? Stay hydrated and seek shade during peak afternoon hours.
Warming Trend
0.5°F per decade on this date
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 80° | 69° | 75° | — | — |
| 2024 | 80° | 66° | 73° | — | — |
| 2023 | 87° | 72° | 79° | — | — |
| 2022 | 74° | 66° | 70° | — | — |
| 2021 | 85° | 74° | 79° | — | — |
| 2020 | 78° | 65° | 71° | — | — |
| 2019 | 80° | 70° | 75° | — | — |
| 2018 | 81° | 72° | 76° | — | — |
| 2017 | 74° | 65° | 69° | — | — |
| 2016 | 84° | 72° | 78° | — | — |
| 2015 | 74° | 68° | 71° | — | — |
| 2014 | 70° | 61° | 65° | — | — |
| 2013 | 83° | 69° | 76° | — | — |
| 2012 | 79° | 66° | 72° | — | — |
| 2011 | 83° | 69° | 76° | — | — |
| 2010 | 89° | 77° | 83° | — | — |
| 2009 | 76° | 67° | 71° | — | — |
| 2008 | 79° | 68° | 73° | — | — |
| 2007 | 86° | 71° | 79° | — | — |
| 2006 | 76° | 66° | 71° | — | — |
| 2005 | 86° | 74° | 80° | — | — |
| 2004coldest | 62° | 51° | 57° | 0.05" | — |
| 2003 | 76° | 68° | 72° | — | — |
| 2002 | 92° | 71° | 81° | — | — |
| 2001 | 85° | 63° | 74° | — | — |
| 2000 | 84° | 64° | 74° | — | — |
| 1999 | 76° | 65° | 70° | 0.99" | — |
| 1998 | 78° | 63° | 70° | — | — |
| 1997 | 76° | 63° | 69° | — | — |
| 1994 | 68° | 59° | 64° | — | — |
| 1993 | 86° | 70° | 78° | — | — |
| 1992 | 80° | 62° | 71° | 0.15" | — |
| 1991 | 82° | 61° | 71° | — | — |
| 1990 | 77° | 67° | 72° | 0.13" | — |
| 1989 | 83° | 64° | 73° | — | — |
| 1988warmest | 94° | 77° | 85° | — | — |
| 1987 | 84° | 67° | 75° | — | — |
| 1986 | 76° | 57° | 66° | — | — |
| 1985 | 82° | 65° | 73° | — | — |
| 1984 | 82° | 69° | 76° | — | — |
| 1983 | 81° | 63° | 72° | — | — |
| 1982 | 75° | 55° | 65° | — | — |
| 1981 | 81° | 65° | 73° | — | — |
| 1980 | 75° | 64° | 70° | 2.03" | — |
| 1979 | 76° | 57° | 66° | — | — |
| 1978 | 81° | 67° | 74° | — | — |
| 1977 | 78° | 56° | 67° | 0.08" | — |
| 1976 | 83° | — | — | — | — |
| 1975 | 89° | 68° | 79° | — | — |
| 1974 | 84° | 64° | 74° | — | — |
| 1973 | 81° | 72° | 76° | — | — |
| 1972 | 78° | 65° | 71° | — | — |
| 1971 | 83° | 58° | 70° | — | — |
53 years of data from CHICAGO GRANT PARK