THE CLIMATE STORY OF

CHICAGO

≈1.7 °C warmer today than in the mid-20th century

1940: 6.9 °C1941: 8.5 °C1942: 8.1 °C1943: 7.5 °C1944: 9.1 °C1945: 8.6 °C1946: 9.6 °C1947: 8.1 °C1948: 8.8 °C1949: 9.9 °C1950: 8.5 °C1951: 8.4 °C1952: 9.7 °C1953: 10.9 °C1954: 9.8 °C1955: 9.8 °C1956: 9.5 °C1957: 9.1 °C1958: 8.5 °C1959: 9.1 °C1960: 8.9 °C1961: 9.2 °C1962: 8.4 °C1963: 8.4 °C1964: 9.4 °C1965: 8.7 °C1966: 8.8 °C1967: 8.4 °C1968: 9.2 °C1969: 8.3 °C1970: 8.8 °C1971: 9.0 °C1972: 7.6 °C1973: 10.4 °C1974: 9.4 °C1975: 9.5 °C1976: 8.6 °C1977: 9.1 °C1978: 7.9 °C1979: 8.2 °C1980: 8.7 °C1981: 9.1 °C1982: 8.6 °C1983: 9.9 °C1984: 9.0 °C1985: 8.8 °C1986: 9.4 °C1987: 10.6 °C1988: 9.4 °C1989: 8.5 °C1990: 10.3 °C1991: 10.5 °C1992: 9.2 °C1993: 8.9 °C1994: 9.2 °C1995: 9.4 °C1996: 8.3 °C1997: 9.0 °C1998: 11.6 °C1999: 10.4 °C2000: 9.8 °C2001: 10.1 °C2002: 10.3 °C2003: 8.9 °C2004: 9.7 °C2005: 10.2 °C2006: 10.6 °C2007: 10.3 °C2008: 8.9 °C2009: 8.8 °C2010: 10.3 °C2011: 9.8 °C2012: 11.9 °C2013: 9.1 °C2014: 7.3 °C2015: 9.0 °C2016: 10.3 °C2017: 10.8 °C2018: 9.7 °C2019: 9.4 °C2020: 10.7 °C2021: 11.2 °C2022: 10.0 °C2023: 11.0 °C2024: 11.8 °C2025: 10.6 °C
1940Annual mean temperature, 1940–20252025

Heat-record watch

Warmest day of the last 14 days: 28.0 °C (August 16, 2026)

All-time record since 1940: 37.4 °C (June 21, 2022)

How much has Chicago warmed since 1940? See its climate story in warming stripes — then enter your birth year to see the story of your own lifetime.

Enter your birth year — see YOUR story

Your hometown, your lifetime, in warming stripes. Free, no sign-up.

More cities · Which cities have warmed the most? · Embed this chart on your site · climatestory.app

Data: Open-Meteo (ERA5 reanalysis). Warming-stripes concept: Ed Hawkins.