Climatological Rankings

Look up monthly U.S., Statewide, Divisional, and Regional Temperature, Precipitation, Degree Days, and Palmer (Drought) rankings for 1-12, 18, 24, 36, 48, 60-month, and Year-to-Date time periods. Data and statistics are as of January 1895.
Please note, Degree Days are not available for Agricultural Belts

Period(s) (Hold "Ctrl" to select multiple):
1-month period 2-month period 3-month period 4-month period 5-month period 6-month period 7-month period 8-month period 9-month period 10-month period 11-month period 12-month period 18-month period 24-month period 36-month period 48-month period 60-month period Year-to-Date

Parameter: Temperature Precipitation Cooling Degree Days Heating Degree Days Palmer Drought Severity Index (PDSI) Palmer Hydrological Drought Index (PHDI) Palmer Modified Drought Index (PMDI) Palmer Z-Index

State/Region/Ag Belt: Contiguous U.S. -- States -- Alabama Arizona Arkansas California Colorado Connecticut Delaware Florida Georgia Idaho Illinois Indiana Iowa Kansas Kentucky Louisiana Maine Maryland Massachusetts Michigan Minnesota Mississippi Missouri Montana Nebraska Nevada New Hampshire New Jersey New Mexico New York North Carolina North Dakota Ohio Oklahoma Oregon Pennsylvania Rhode Island South Carolina South Dakota Tennessee Texas Utah Vermont Virginia Washington West Virginia Wisconsin Wyoming -- Regions -- Northeast East North Central Central Southeast West North Central South Southwest Northwest West -- Agricultural Belts (by area) -- Spring Wheat Belt Winter Wheat Belt Primary Corn and Soybean Belt Corn Belt Soybean Belt Cotton Belt -- Agricultural Belts (by productivity) -- Spring Wheat Belt Winter Wheat Belt Corn Belt Soybean Belt Cotton Belt

Climate Division: All Divisions 1 2 3 4 5 6 7 8 9 10 Year: 2013 2012 2011 2010 2009 2008 2007 2006 2005 2004 2003 2002 2001 2000 1999 1998 1997 1996 1995 1994 1993 1992 1991 1990 1989 1988 1987 1986 1985 1984 1983 1982 1981 1980 1979 1978 1977 1976 1975 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962 1961 1960 1959 1958 1957 1956 1955 1954 1953 1952 1951 1950 1949 1948 1947 1946 1945 1944 1943 1942 1941 1940 1939 1938 1937 1936 1935 1934 1933 1932 1931 1930 1929 1928 1927 1926 1925 1924 1923 1922 1921 1920 1919 1918 1917 1916 1915 1914 1913 1912 1911 1910 1909 1908 1907 1906 1905 1904 1903 1902 1901 1900 1899 1898 1897 1896 1895 Month: January February March April May June July August September October November December

Check to display statistics as of month/year requested (leave unchecked for statistics relative to the entire period of record)

Iowa Precipitation Rankings, September 2010

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More information on Climatological Rankings

Period	Amount	20th Century Average	Departure	Rank (out of 119 years)	Record	Wettest/Driest Since
Jul - Sep 2010 3-month period	18.40" (467.36 mm)	11.38" (289.05 mm)	7.02" (178.31 mm)	116th Driest	1947	Driest since: 2009
				3rd Wettest	1993	Wettest since: 1993