Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

Flash flooding likely in northeast Kansas & Missouri into tonight. Widespread extreme heat will develop and persist across much of the Southeast this weekend & next week. Tropical Storm Krosa has formed and will continue to cause heavy rain across Guam & the CNMI through Saturday. Severe storms with flooding rains expected into tonight for portions of the Midwest. Read More >

Chicago Temperature Rankings for each month
Jan	Feb	Mar	Apr	May	Jun	July	Aug	Sept	Oct	Nov	Dec

CHICAGO

MEAN MONTHLY TEMPERATURE
SEPTEMBER

Normal: 66.3 degrees

***Coldest to Warmest Official Chicago Temperature Data from 1872-2022***

59.2	1993	64.4	1926	66.8	1994
59.6	1918	64.4	1932	66.9	1930
59.8	1888	64.5	1904	67.0	1911
60.3	1924	64.5	1976	67.0	1973
60.4	1890	64.6	1885	67.1	1874
60.4	1949	64.6	1907	67.2	1915
60.6	1883	64.6	1929	67.2	2013
60.6	1896	64.6	1940	67.3	2002
60.9	1875	64.6	1983	67.4	2022
60.9	1902	64.7	2000	67.5	1905
61.1	1879	64.8	1967	67.6	1898
61.1	1984	64.8	1972	67.6	1953
61.4	1928	64.9	1882	67.6	1963
61.4	1975	64.9	1950	67.7	1912
61.5	1974	65.0	1938	67.7	1998
61.6	1943	65.0	1956	67.8	1948
61.7	1981	65.0	1965	67.9	1955
61.8	1876	65.0	1966	68.1	2007
61.9	2001	65.1	1923	68.2	1936
62.0	1989	65.1	1937	68.6	1895
62.1	1982	65.1	1987	68.8	1884
62.2	2011	65.2	1910	68.8	1941
62.4	1887	65.2	2010	68.9	1919
62.4	1942	65.4	1913	68.9	2018
62.4	2006	65.4	1985	69.0	1891
62.5	1995	65.4	2009	69.0	1927
62.6	1873	65.5	1952	69.0	1959
62.7	1899	65.6	1900	69.0	2015
62.7	1992	65.6	1946	69.2	1961
62.8	1889	65.8	1935	69.3	1920
62.9	1880	65.8	1977	69.4	1954
62.9	1951	65.8	1979	69.4	2005
63.4	1999	65.9	1964	69.4	2017
63.4	2003	65.9	1988	69.4	2019
63.5	1996	65.9	1990	69.5	1897
63.6	1872	66.0	1980	69.5	1922
63.7	1917	66.1	1886	69.6	2016
63.7	1991	66.2	1878	69.8	1933
63.9	1892	66.2	1894	70.0	1921
63.9	2014	66.2	1944	70.0	1939
64.0	1909	66.2	1958	70.1	1906
64.0	1945	66.2	1970	70.2	1881
64.1	1893	66.2	2008	70.2	1925
64.1	2012	66.3	2020	70.2	1978
64.2	1934	66.4	1969	70.3	2021
64.2	1957	66.5	2004	70.4	1971
64.2	1962	66.6	1914	70.6	1908
64.2	1997	66.7	1947	70.6	1960
64.3	1901	66.7	1968	71.2	1931
64.4	1903	66.8	1877
64.4	1916	66.8	1986

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Flash Flooding Likely into Tonight for Portions of Kansas and Missouri; Heat Wave Expands to the East Coast; Tropical Storm Krosa Forms Near the Marianas.

September Temperature Rankings for Chicago