Weather on July 20
Chicago, IL
55 Years of Data
About This Date
July 20th in Chicago, IL typically brings warm summer weather, with average highs around 85°F and lows near 70°F. Over 53 years of records, the warmest July 20th was in 1991 (89°F average), while the coldest was 2009 (68°F) — a 21°F range across recorded history. Rain or other precipitation has occurred on about 17% of July 20th dates historically, with the wettest July 20th recording 10.03" of rain. The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
The last decade has been 2.5°F cooler on this date compared to 20-30 years ago.
Planning for July 20th in Chicago, IL? Stay hydrated and seek shade during peak afternoon hours.
| Year | High | Low | Avg | Precip | Snow |
|---|---|---|---|---|---|
| 2025 | 77° | 68° | 73° | — | — |
| 2024 | 77° | 68° | 73° | — | — |
| 2023 | 88° | 71° | 79° | — | — |
| 2022 | 85° | 76° | 80° | — | — |
| 2021 | 83° | 67° | 75° | — | — |
| 2020 | 79° | 69° | 74° | — | — |
| 2019 | 95° | 69° | 82° | — | — |
| 2018 | 77° | 69° | 73° | — | — |
| 2017 | 87° | 68° | 78° | — | — |
| 2016 | 87° | 70° | 78° | — | — |
| 2015 | 87° | 69° | 78° | — | — |
| 2014 | 76° | 65° | 70° | — | — |
| 2013 | 80° | 71° | 76° | — | — |
| 2012 | 78° | 71° | 75° | — | — |
| 2011 | 100° | 74° | 87° | — | — |
| 2010 | 85° | 71° | 78° | — | — |
| 2009coldest | 74° | 62° | 68° | — | — |
| 2008 | 83° | 71° | 77° | — | — |
| 2007 | 75° | 67° | 71° | — | — |
| 2006 | 81° | 72° | 76° | — | — |
| 2005 | 91° | 74° | 82° | — | — |
| 2004 | 90° | 72° | 81° | — | — |
| 2003 | 87° | 67° | 77° | 0.64" | — |
| 2002 | 92° | 68° | 80° | — | — |
| 2001 | 94° | 75° | 84° | — | — |
| 2000 | 77° | 61° | 69° | — | — |
| 1999 | 84° | 72° | 78° | 0.03" | — |
| 1998 | 90° | 73° | 81° | 0.05" | — |
| 1997 | 89° | 70° | 79° | — | — |
| 1994 | 90° | 74° | 82° | — | — |
| 1993 | 87° | 67° | 77° | — | — |
| 1992 | 86° | 70° | 78° | — | — |
| 1991warmest | 100° | 77° | 89° | — | — |
| 1990 | 89° | 68° | 79° | 10.03" | — |
| 1989 | 73° | 66° | 70° | 0.61" | — |
| 1988 | 80° | 72° | 76° | — | — |
| 1987 | 95° | 78° | 87° | — | — |
| 1986 | 97° | 74° | 85° | — | — |
| 1985 | 83° | 72° | 77° | 0.05" | — |
| 1984 | 85° | 71° | 78° | — | — |
| 1983 | 94° | 69° | 81° | 1.32" | — |
| 1982 | 76° | 63° | 69° | — | — |
| 1981 | 86° | 73° | 80° | 1.02" | — |
| 1980 | 98° | 77° | 88° | — | — |
| 1979 | 81° | 61° | 71° | — | — |
| 1978 | 86° | 73° | 80° | 0.89" | — |
| 1977 | 97° | 77° | 87° | — | — |
| 1976 | 89° | 71° | 80° | — | — |
| 1975 | 82° | 72° | 77° | — | — |
| 1974 | 72° | 67° | 69° | — | — |
| 1973 | 79° | 68° | 73° | — | — |
| 1972 | 92° | 77° | 84° | — | — |
| 1971 | 81° | 57° | 69° | — | — |
Chicago, IL Temperature Range by Month
Average monthly highs and lows. The shaded band shows the typical daily temperature range.
Chicago, IL Monthly Precipitation
Average rainfall per month, in inches.
Chicago, 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 Chicago, IL
Chicago, IL has no months that meet our "pleasant" threshold — every season has tradeoffs.