| Chicago Precipitation Rankings for each month | |||||||||||
| Jan | Feb | Mar | Apr | May | Jun | July | Aug | Sept | Oct | Nov | Dec |
|
CHICAGO Normal 3.70 inches ***Smallest to Greatest Official Chicago Precipitation Data from 1871 - 2012***
|
| 0.22 | 1936 | 2.67 | 1923 | 3.96 | 1974 | ||
| 0.42 | 1934 | 2.68 | 1917 | 3.98 | 1973 | ||
| 0.58 | 1874 | 2.68 | 1931 | 4.00 | 1922 | ||
| 0.60 | 1894 | 2.68 | 2002 | 4.03 | 1942 | ||
| 1.05 | 1887 | 2.70 | 1933 | 4.04 | 1873 | ||
| 1.10 | 1941 | 2.74 | 1939 | 4.10 | 1947 | ||
| 1.29 | 1940 | 2.74 | 1988 | 4.16 | 1953 | ||
| 1.32 | 1991 | 2.76 | 1904 | 4.19 | 1987 | ||
| 1.33 | 1945 | 2.84 | 1955 | 4.25 | 1901 | ||
| 1.40 | 1977 | 2.86 | 1972 | 4.25 | 1983 | ||
| 1.41 | 1937 | 2.94 | 1927 | 4.30 | 1986 | ||
| 1.45 | 1908 | 2.95 | 1928 | 4.31 | 1881 | ||
| 1.47 | 1897 | 2.96 | 2001 | 4.45 | 1993 | ||
| 1.53 | 1886 | 2.98 | 1877 | 4.50 | 1981 | ||
| 1.53 | 1975 | 2.99 | 1961 | 4.50 | 2003 | ||
| 1.53 | 2009 | 3.04 | 1997 | 4.58 | 1954 | ||
| 1.55 | 1968 | 3.05 | 1935 | 4.61 | 1965 | ||
| 1.59 | 1919 | 3.06 | 1976 | 4.64 | 1900 | ||
| 1.61 | 1920 | 3.07 | 1880 | 4.65 | 1962 | ||
| 1.62 | 1994 | 3.08 | 1893 | 4.67 | 1932 | ||
| 1.75 | 1998 | 3.09 | 1872 | 4.74 | 1958 | ||
| 1.77 | 1909 | 3.11 | 1876 | 4.76 | 2008 | ||
| 1.79 | 1910 | 3.15 | 1907 | 4.77 | 1959 | ||
| 1.87 | 1921 | 3.17 | 1995 | 4.78 | 1903 | ||
| 1.93 | 1944 | 3.18 | 1948 | 4.83 | 1964 | ||
| 1.94 | 1898 | 3.19 | 1984 | 4.84 | 1906 | ||
| 1.95 | 2005 | 3.21 | 1926 | 4.96 | 1951 | ||
| 2.11 | 1914 | 3.30 | 1913 | 5.00 | 1971 | ||
| 2.18 | 1929 | 3.43 | 1882 | 5.02 | 1905 | ||
| 2.22 | 1916 | 3.56 | 1980 | 5.14 | 1943 | ||
| 2.23 | 1892 | 3.58 | 1960 | 5.53 | 1883 | ||
| 2.25 | 1990 | 3.58 | 2000 | 5.57 | 1915 | ||
| 2.27 | 1952 | 3.59 | 1949 | 5.58 | 1879 | ||
| 2.36 | 1967 | 3.61 | 1896 | 5.78 | 1902 | ||
| 2.42 | 1895 | 3.66 | 1924 | 5.89 | 1989 | ||
| 2.44 | 1885 | 3.66 | 2012 | 6.09 | 1878 | ||
| 2.47 | 1891 | 3.70 | 2006 | 6.38 | 1978 | ||
| 2.47 | 1925 | 3.71 | 1884 | 6.60 | 1966 | ||
| 2.49 | 1946 | 3.73 | 1999 | 6.66 | 1899 | ||
| 2.49 | 1956 | 3.75 | 1985 | 6.78 | 1950 | ||
| 2.52 | 1871 | 3.77 | 1992 | 7.18 | 1875 | ||
| 2.57 | 1890 | 3.80 | 1979 | 7.31 | 1963 | ||
| 2.58 | 1970 | 3.86 | 1912 | 7.58 | 1969 | ||
| 2.63 | 1930 | 3.86 | 2007 | 8.33 | 1982 | ||
| 2.65 | 1911 | 3.90 | 1938 | 8.84 | 2010 | ||
| 2.66 | 1918 | 3.93 | 1888 | 8.98 | 1957 | ||
| 2.66 | 2004 | 3.95 | 1996 | 9.56 | 1889 | ||
| 2.66 | 2004 | 11.15 | 2011 |