Statewide Rankings

Statewide Data Info
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Illinois

Average Temperature Rankings, September 1986

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
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)
105th Coolest
Coolest since:
1918
24th Warmest
Warmest since:
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)
53rd Coolest
Coolest since:
1967
76th Warmest
Warmest since:
1936
Ties: 1912
Jul–Sep 1986
3-Month
72.2°F
(22.3°C)
71.7°F
(22.1°C)
0.5°F
(0.2°C)
76th Coolest
Coolest since:
1967
53rd Warmest
Warmest since:
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:
1915, 1924
47th Warmest
Warmest since:
1936
Ties: 1947
May–Sep 1986
5-Month
70.7°F
(21.5°C)
69.7°F
(20.9°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1924
39th Warmest
Warmest since:
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)
105th Coolest
Coolest since:
1907
24th Warmest
Warmest since:
2010
Ties: 1911, 1931, 2002
Mar–Sep 1986
7-Month
64.7°F
(18.2°C)
62.9°F
(17.2°C)
1.8°F
(1.0°C)
114th Coolest
Coolest since:
1924
15th Warmest
Warmest since:
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)
111th Coolest
Coolest since:
1904
18th Warmest
Warmest since:
2012
Ties: 1922, 1931, 1953, 1999, 2002, 2007, 2018
Jan–Sep 1986
9-Month
56.6°F
(13.7°C)
54.9°F
(12.7°C)
1.7°F
(1.0°C)
106th Coolest
Coolest since:
1904, 1912
23rd Warmest
Warmest since:
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:
1904
52nd Warmest
Warmest since:
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:
1904
42nd Warmest
Warmest since:
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:
1904
42nd Warmest
Warmest since:
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:
1904, 1918
47th Warmest
Warmest since:
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:
1979
40th Warmest
Warmest since:
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:
1979
76th Warmest
Warmest since:
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:
1905
46th Warmest
Warmest since:
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:
1906
69th Warmest
Warmest since:
2020
Ties: 1977

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