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


Illinois

Average Temperature Rankings, September 1990

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
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)
88th Coolest Coolest since: 1989 1918
38th Warmest Warmest since: 1986 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)
71st Coolest Coolest since: 1989 1967
55th Warmest Warmest since: 1988 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: 1989 1967
71st Warmest Warmest since: 1988 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: 1989 1915, 1924
71st Warmest Warmest since: 1988 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: 1989 1924
91st Warmest Warmest since: 1988 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: 1989 1907
93rd Warmest Warmest since: 1988 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: 1989 1924
64th Warmest Warmest since: 1988 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)
86th Coolest Coolest since: 1989 1904
40th Warmest Warmest since: 1988 2012
Ties: 1939
Jan–Sep 1990
9-Month
57.0°F
(13.9°C)
55.0°F
(12.8°C)
2.0°F
(1.1°C)
112th Coolest Coolest since: 1989 1904, 1912
14th Warmest Warmest since: 1987 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: 1989 1904
46th Warmest Warmest since: 1988 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: 1989 1904
44th Warmest Warmest since: 1988 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: 1989 1904
39th Warmest Warmest since: 1988 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)
62nd Coolest Coolest since: 1985 1904, 1918
63rd Warmest Warmest since: 1989 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: 1985 1979
73rd Warmest Warmest since: 1989 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: 1986 1979
43rd Warmest Warmest since: 1989 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: 1989 1905
25th Warmest Warmest since: 1989 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: 1989 1906
29th Warmest Warmest since: 1987 2002
Ties: 1932, 1955, 1987, 1992

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2020, retrieved on August 6, 2020 from https://www.ncdc.noaa.gov/cag/