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Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of August 2022. For more information, please see Climatological Rankings.

Parameter: Average Temperature Maximum Temperature Minimum 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

Year: 1895 1896 1897 1898 1899 1900 1901 1902 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 1919 1920 1921 1922 1923 1924 1925 1926 1927 1928 1929 1930 1931 1932 1933 1934 1935 1936 1937 1938 1939 1940 1941 1942 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 1959 1960 1961 1962 1963 1964 1965 1966 1967 1968 1969 1970 1971 1972 1973 1974 1975 1976 1977 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1996 1997 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022

Month: January February March April May June July August September October November December

State: Alabama Alaska 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

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« August 1979

October 1979 »

Illinois

Average Temperature Rankings, September 1979

View Period (Months):All1234567891011121824364860

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• Record Coolest
• Bottom 1/10
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• Record Warmest

Period	Value	1901-2000 Mean	Anomaly	Rank (1895-2021)	Warmest/Coolest Since	Record
September 1979 1-Month	65.7°F (18.7°C)	66.2°F (19.0°C)	-0.5°F (-0.3°C)	53rd Coolest	Coolest since: 1976	1918
				75th Warmest	Warmest since: 1978	1925, 1933
	Ties: 1901
Aug–Sep 1979 2-Month	69.1°F (20.6°C)	69.8°F (21.0°C)	-0.7°F (-0.4°C)	40th Coolest	Coolest since: 1976	1967
				88th Warmest	Warmest since: 1978	1936
	Ties: 1952
Jul–Sep 1979 3-Month	70.7°F (21.5°C)	71.8°F (22.1°C)	-1.1°F (-0.6°C)	34th Coolest	Coolest since: 1976	1967
				94th Warmest	Warmest since: 1978	1936
	Ties: 1945
Jun–Sep 1979 4-Month	71.0°F (21.7°C)	71.7°F (22.1°C)	-0.7°F (-0.4°C)	41st Coolest	Coolest since: 1976	1915, 1924
				87th Warmest	Warmest since: 1978	1936
	Ties: 1942, 1981
May–Sep 1979 5-Month	69.1°F (20.6°C)	69.8°F (21.0°C)	-0.7°F (-0.4°C)	35th Coolest	Coolest since: 1976	1924
				93rd Warmest	Warmest since: 1978	1936
	Ties: 1920, 1963, 1969, 1982, 1990, 2008, 2014
Apr–Sep 1979 6-Month	65.7°F (18.7°C)	66.7°F (19.3°C)	-1.0°F (-0.6°C)	29th Coolest	Coolest since: 1976	1907
				99th Warmest	Warmest since: 1978	2010
	Ties: 1918, 1958, 2009
Mar–Sep 1979 7-Month	62.0°F (16.7°C)	62.9°F (17.2°C)	-0.9°F (-0.5°C)	33rd Coolest	Coolest since: 1975	1924
				95th Warmest	Warmest since: 1978	2012
	Ties: 1927
Feb–Sep 1979 8-Month	56.4°F (13.6°C)	58.6°F (14.8°C)	-2.2°F (-1.2°C)	6th Coolest	Coolest since: 1958	1904
				122nd Warmest	Warmest since: 1978	2012
	Ties: 1958
Jan–Sep 1979 9-Month	51.6°F (10.9°C)	55.0°F (12.8°C)	-3.4°F (-1.9°C)	3rd Coolest	Coolest since: 1912	1904, 1912
				125th Warmest	Warmest since: 1978	2012
Dec 1978–Sep 1979 10-Month	49.3°F (9.6°C)	52.4°F (11.3°C)	-3.1°F (-1.7°C)	2nd Coolest	Coolest since: 1904	1904
				125th Warmest	Warmest since: 1978	2012
Nov 1978–Sep 1979 11-Month	48.8°F (9.3°C)	51.4°F (10.8°C)	-2.6°F (-1.5°C)	4th Coolest	Coolest since: 1912	1904
				123rd Warmest	Warmest since: 1978	2012
Oct 1978–Sep 1979 12-Month	49.1°F (9.5°C)	51.7°F (10.9°C)	-2.6°F (-1.4°C)	4th Coolest	Coolest since: 1978	1904
				123rd Warmest	Warmest since: 1978	2012
	Ties: 1978
Apr 1978–Sep 1979 18-Month	55.1°F (12.8°C)	56.6°F (13.7°C)	-1.5°F (-0.9°C)	6th Coolest	Coolest since: 1951	1904, 1918
				121st Warmest	Warmest since: 1978	2012
Oct 1977–Sep 1979 24-Month	49.1°F (9.5°C)	51.6°F (10.9°C)	-2.5°F (-1.4°C)	1st Coolest	Coolest since: 1979	1979
				125th Warmest	Warmest since: 1978	2017
Oct 1976–Sep 1979 36-Month	49.5°F (9.7°C)	51.6°F (10.9°C)	-2.1°F (-1.2°C)	1st Coolest	Coolest since: 1979	1979
				124th Warmest	Warmest since: 1978	2018
Oct 1975–Sep 1979 48-Month	50.3°F (10.2°C)	51.6°F (10.9°C)	-1.3°F (-0.7°C)	5th Coolest	Coolest since: 1918	1905
				119th Warmest	Warmest since: 1978	2019
	Ties: 1904, 1906
Oct 1974–Sep 1979 60-Month	50.5°F (10.3°C)	51.6°F (10.9°C)	-1.1°F (-0.6°C)	7th Coolest	Coolest since: 1908	1906
				116th Warmest	Warmest since: 1978	2020

Citing This Page

• NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Average Temperature, published September 2022, retrieved on October 5, 2022 from https://www.ncdc.noaa.gov/cag/