Areas of Excessive Rainfall and Extreme Heat; Monitoring Tropical Storm Erin

Heavy to excessive rainfall over the southern Appalachians may bring areas of flooding Tuesday. Hot to extremely hot temperatures are in place through Tuesday across much of the western U.S. and northern New England. Tropical Storm Erin is forecast to become a Major Hurricane by this weekend as it moves across the central Atlantic Ocean. Monitor future forecasts for any East Coast impacts. Read More >

Chicago Precipitation Rankings for each month

CHICAGO
MONTHLY TOTAL PRECIPITATION
OCTOBER

Normal: 3.43 inches

***Smallest to Greatest Official Chicago Precipitation Data from 1871 - 2022***

0.18	1897	1.75	1893	3.19	1880
0.20	1964	1.77	1927	3.23	1994
0.30	1956	1.79	1910	3.26	1898
0.36	1891	1.79	1939	3.26	1921
0.40	1915	1.79	1992	3.26	1940
0.51	1895	1.80	1981	3.40	1882
0.59	1944	1.81	1979	3.40	1922
0.62	1948	1.82	1889	3.47	1973
0.62	1963	1.82	1905	3.49	1961
0.65	1872	1.88	1982	3.52	1912
0.71	1968	1.88	2003	3.52	1932
0.77	1938	1.98	2011	3.59	1884
0.81	1908	2.03	1887	3.62	1972
0.84	1894	2.05	1906	3.64	1933
0.84	1924	2.07	2008	3.65	2020
0.85	1971	2.09	1899	3.72	1925
0.90	1952	2.09	1980	3.75	1986
0.93	1907	2.12	1958	3.77	2016
0.93	2010	2.17	1966	3.79	1911
1.06	1965	2.19	1993	3.87	1885
1.07	1999	2.23	1913	3.88	1916
1.09	1903	2.23	2015	3.95	1969
1.12	2000	2.26	1975	3.96	1917
1.18	1945	2.32	1934	4.04	2006
1.20	1876	2.32	1976	4.10	1990
1.20	1909	2.32	1996	4.20	1890
1.21	1974	2.43	1873	4.20	1995
1.25	1953	2.48	2014	4.32	1875
1.29	1901	2.55	1874	4.41	1983
1.29	1950	2.60	1947	4.57	1923
1.35	1900	2.62	1931	4.67	1967
1.36	1896	2.72	1879	4.79	2018
1.38	1962	2.73	1949	4.94	1970
1.39	2005	2.73	1951	4.98	1985
1.40	1978	2.74	1928	5.05	1988
1.42	1886	2.76	1997	5.17	1878
1.44	1942	2.81	1930	5.22	1998
1.45	1902	2.82	1946	5.37	1955
1.49	1943	2.85	2004	5.77	2021
1.49	1989	2.86	1959	6.04	2009
1.54	1892	2.88	1871	6.41	1919
1.57	1920	2.89	1914	6.51	1877
1.58	1904	2.94	1918	6.76	2019
1.59	1987	2.95	1888	6.89	1881
1.60	2002	3.00	1936	7.36	1883
1.66	1977	3.06	1929	7.36	1991
1.66	2022	3.09	1937	8.44	1941
1.67	1926	3.12	2013	8.54	2001
1.68	1935	3.15	1957	8.70	2017
1.69	2007	3.15	1984	12.06	1954
1.71	1960	3.15	2012

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Areas of Excessive Rainfall and Extreme Heat; Monitoring Tropical Storm Erin

October Precipitation Rankings for Chicago