Statewide Rankings

Statewide Data Info
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Illinois

Average Temperature Rankings, September 1990

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1990
1-Month
67.9°F
(19.9°C)
66.2°F
(19.0°C)
1.7°F
(0.9°C)
90th Coolest
Coolest since:
1918
39th Warmest
Warmest since:
1925, 1933
Ties: 1938, 1948, 1959
Aug–Sep 1990
2-Month
70.2°F
(21.2°C)
69.9°F
(21.1°C)
0.3°F
(0.1°C)
72nd Coolest
Coolest since:
1967
57th Warmest
Warmest since:
1936
Ties: 1972
Jul–Sep 1990
3-Month
71.5°F
(21.9°C)
71.7°F
(22.1°C)
-0.2°F
(-0.2°C)
55th Coolest
Coolest since:
1967
74th Warmest
Warmest since:
1936
Ties: 1899, 1969, 2013
Jun–Sep 1990
4-Month
71.6°F
(22.0°C)
71.6°F
(22.0°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1915, 1924
74th Warmest
Warmest since:
1936
Ties: 1935, 1957, 2008
May–Sep 1990
5-Month
69.1°F
(20.6°C)
69.8°F
(21.0°C)
-0.7°F
(-0.4°C)
35th Coolest
Coolest since:
1924
94th Warmest
Warmest since:
1936
Ties: 1920, 1963, 1969, 1979, 1982, 2008, 2014
Apr–Sep 1990
6-Month
66.0°F
(18.9°C)
66.7°F
(19.3°C)
-0.7°F
(-0.4°C)
33rd Coolest
Coolest since:
1907
96th Warmest
Warmest since:
2010
Ties: 1946, 1975, 1984, 1993
Mar–Sep 1990
7-Month
63.0°F
(17.2°C)
62.9°F
(17.2°C)
0.1°F
(0.0°C)
62nd Coolest
Coolest since:
1924
67th Warmest
Warmest since:
2012
Ties: 1968
Feb–Sep 1990
8-Month
59.5°F
(15.3°C)
58.6°F
(14.8°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Ties: 1939, 2020, 2022
Jan–Sep 1990
9-Month
57.0°F
(13.9°C)
55.0°F
(12.8°C)
2.0°F
(1.1°C)
115th Coolest
Coolest since:
1904, 1912
14th Warmest
Warmest since:
2012
Ties: 1931
Dec 1989–Sep 1990
10-Month
53.1°F
(11.7°C)
52.4°F
(11.3°C)
0.7°F
(0.4°C)
79th Coolest
Coolest since:
1904
49th Warmest
Warmest since:
2012
Ties: 1946, 1992
Nov 1989–Sep 1990
11-Month
51.9°F
(11.1°C)
51.3°F
(10.7°C)
0.6°F
(0.4°C)
81st Coolest
Coolest since:
1904
47th Warmest
Warmest since:
2012
Ties: 1908, 1944, 1973
Oct 1989–Sep 1990
12-Month
52.3°F
(11.3°C)
51.7°F
(10.9°C)
0.6°F
(0.4°C)
86th Coolest
Coolest since:
1904
42nd Warmest
Warmest since:
2012
Ties: 1898, 1913, 1949, 1972, 1986
Apr 1989–Sep 1990
18-Month
56.7°F
(13.7°C)
56.7°F
(13.7°C)
0.0°F
(0.0°C)
60th Coolest
Coolest since:
1904, 1918
68th Warmest
Warmest since:
2012
Ties: 1909, 1945, 1948, 1965, 2003
Oct 1988–Sep 1990
24-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
51st Coolest
Coolest since:
1979
76th Warmest
Warmest since:
2017
Ties: 1945, 1946, 1964, 1975, 1977, 1983, 1996
Oct 1987–Sep 1990
36-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
80th Coolest
Coolest since:
1979
46th Warmest
Warmest since:
2018
Ties: 1931, 1949, 1974, 1976, 2010
Oct 1986–Sep 1990
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
97th Coolest
Coolest since:
1905
28th Warmest
Warmest since:
2019
Ties: 1941, 1942, 1989, 2004, 2010, 2014
Oct 1985–Sep 1990
60-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
92nd Coolest
Coolest since:
1906
32nd Warmest
Warmest since:
2020
Ties: 1932, 1955, 1987, 1992

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