National Weather Service United States Department of Commerce
Chicago Precipitation Rankings for each month
Jan Feb Mar Apr May Jun July Aug Sept Oct Nov Dec Annual

 

CHICAGO
MONTHLY PRECIPITATION AMOUNTS
SEPTEMBER

Normal 3.19 inches

***Smallest to Greatest Official Chicago Precipitation Data from 1871 - 2020***

 

0.01 1979   1.89 1937   3.68 1968
0.26 2004   1.98 1893   3.74 1876
0.31 1940   1.99 1878   3.76 1874
0.32 1891   2.00 1950   3.78 1933
0.32 2017   2.01 1946   3.79 1988
0.46 1956   2.02 1877   3.84 1984
0.49 1939   2.02 1953   3.85 1919
0.74 1871   2.09 1908   3.90 1910
0.77 1962   2.15 1917   3.91 1989
0.83 1954   2.17 1959   4.00 1903
0.84 1897   2.17 1976   4.03 1887
0.89 1895   2.24 1916   4.03 1911
0.91 1882   2.25 1880   4.03 1934
0.92 1943   2.29 1884   4.18 1905
0.92 1966   2.34 1998   4.23 1973
0.94 1987   2.38 1948   4.31 1992
0.98 1888   2.39 1899   4.34 1881
1.03 1990   2.50 1923   4.37 1922
1.03 2009   2.50 1964   4.39 1875
1.04 1994   2.51 1991   4.47 1993
1.04 1995   2.57 2013   4.49 1907
1.08 1957   2.63 1963   4.64 2015
1.09 1975   2.65 1904   4.83 1902
1.12 1932   2.66 2005   5.03 1926
1.15 1982   2.71 2014   5.12 1942
1.18 1879   2.73 1996   5.14 1931
1.23 2007   2.75 1889   5.20 1941
1.24 1949   2.78 2010   5.29 1938
1.27 1930   2.80 1978   5.29 1951
1.31 1969   2.92 1901   5.41 1983
1.34 1892   2.97 1885   5.54 1906
1.36 1883   3.03 1929   5.65 1980
1.39 1890   3.14 1924   5.72 1921
1.40 1960   3.16 1898   5.75 1972
1.47 1955   3.17 1967   5.85 2006
1.49 1913   3.18 2020   6.01 1945
1.53 1974   3.19 1925   6.05 2001
1.56 1900   3.25 1981   6.21 1965
1.56 1914   3.26 1912   6.43 1872
1.56 1944   3.26 1947   6.70 1896
1.61 1952   3.27 1999   6.71 1970
1.70 1997   3.28 1935   6.72 1927
1.72 2002   3.35 1920   6.93 1886
1.72 2003   3.45 2011   7.12 1986
1.76 2012   3.47 1971   7.61 2019
1.76 2016   3.53 1873   8.28 1894
1.82 1985   3.53 1915   8.97 1936
1.84 1918   3.59 2000   9.44 1977
1.86 1958   3.60 1909   13.63 2008
1.87 1928   3.65 2018   14.17 1961