Climate at a Glance

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 February 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1986

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1986
1-Month
69.2°F
(20.7°C)
66.2°F
(19.0°C)
3.0°F
(1.7°C)
103rd Coolest Coolest since: 1985 1918
23rd Warmest Warmest since: 1978 1925, 1933
Ties: 1971
Aug–Sep 1986
2-Month
69.4°F
(20.8°C)
69.8°F
(21.0°C)
-0.4°F
(-0.2°C)
52nd Coolest Coolest since: 1985 1967
74th Warmest Warmest since: 1984 1936
Ties: 1912, 2008
Jul–Sep 1986
3-Month
72.2°F
(22.3°C)
71.8°F
(22.1°C)
0.4°F
(0.2°C)
74th Coolest Coolest since: 1985 1967
52nd Warmest Warmest since: 1983 1936
Ties: 1895, 1970, 2015
Jun–Sep 1986
4-Month
72.4°F
(22.4°C)
71.7°F
(22.1°C)
0.7°F
(0.3°C)
82nd Coolest Coolest since: 1985 1915, 1924
44th Warmest Warmest since: 1983 1936
Ties: 1947, 1973
May–Sep 1986
5-Month
70.7°F
(21.5°C)
69.7°F
(20.9°C)
1.0°F
(0.6°C)
89th Coolest Coolest since: 1985 1924
37th Warmest Warmest since: 1983 1936
Ties: 1925, 2011
Apr–Sep 1986
6-Month
68.2°F
(20.1°C)
66.7°F
(19.3°C)
1.5°F
(0.8°C)
102nd Coolest Coolest since: 1985 1907
24th Warmest Warmest since: 1977 2010
Ties: 1911, 1931, 2002
Mar–Sep 1986
7-Month
64.7°F
(18.2°C)
62.8°F
(17.1°C)
1.9°F
(1.1°C)
112th Coolest Coolest since: 1985 1924
14th Warmest Warmest since: 1977 2012
Ties: 1933, 1934, 1938, 2005
Feb–Sep 1986
8-Month
60.2°F
(15.7°C)
58.7°F
(14.8°C)
1.5°F
(0.9°C)
108th Coolest Coolest since: 1985 1904
18th Warmest Warmest since: 1977 2012
Ties: 1931, 1953, 1999, 2002, 2007, 2018
Jan–Sep 1986
9-Month
56.6°F
(13.7°C)
55.0°F
(12.8°C)
1.6°F
(0.9°C)
103rd Coolest Coolest since: 1985 1904, 1912
23rd Warmest Warmest since: 1955 2012
Ties: 1934
Dec 1985–Sep 1986
10-Month
53.0°F
(11.7°C)
52.4°F
(11.3°C)
0.6°F
(0.4°C)
76th Coolest Coolest since: 1985 1904
49th Warmest Warmest since: 1983 2012
Ties: 1957, 2013
Nov 1985–Sep 1986
11-Month
52.0°F
(11.1°C)
51.4°F
(10.8°C)
0.6°F
(0.3°C)
86th Coolest Coolest since: 1985 1904
39th Warmest Warmest since: 1983 2012
Ties: 1896, 1930, 1946, 2013
Oct 1985–Sep 1986
12-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
86th Coolest Coolest since: 1985 1904
39th Warmest Warmest since: 1983 2012
Ties: 1898, 1913, 1949, 1972, 1990
Apr 1985–Sep 1986
18-Month
57.2°F
(14.0°C)
56.7°F
(13.7°C)
0.5°F
(0.3°C)
81st Coolest Coolest since: 1985 1904, 1918
44th Warmest Warmest since: 1983 2012
Ties: 1956, 1976, 2004
Oct 1984–Sep 1986
24-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
87th Coolest Coolest since: 1985 1979
37th Warmest Warmest since: 1976 2017
Ties: 1943, 1949, 1973, 1976, 2010
Oct 1983–Sep 1986
36-Month
51.5°F
(10.8°C)
51.6°F
(10.9°C)
-0.1°F
(-0.1°C)
50th Coolest Coolest since: 1984 1979
73rd Warmest Warmest since: 1985 2018
Ties: 1910, 1925, 1945, 1977
Oct 1982–Sep 1986
48-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
79th Coolest Coolest since: 1985 1905
43rd Warmest Warmest since: 1976 2019
Ties: 1940, 1949, 1976, 1998, 2011
Oct 1981–Sep 1986
60-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
55th Coolest Coolest since: 1985 1906
66th Warmest Warmest since: 1977 2002
Ties: 1977

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published March 2020, retrieved on April 5, 2020 from https://www.ncdc.noaa.gov/cag/