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 May 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1989

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1989
1-Month
63.3°F
(17.4°C)
66.2°F
(19.0°C)
-2.9°F
(-1.6°C)
13th Coolest Coolest since: 1975 1918
114th Warmest Warmest since: 1988 1925, 1933
Ties: 1966, 1995
Aug–Sep 1989
2-Month
68.0°F
(20.0°C)
69.8°F
(21.0°C)
-1.8°F
(-1.0°C)
17th Coolest Coolest since: 1982 1967
110th Warmest Warmest since: 1988 1936
Jul–Sep 1989
3-Month
70.5°F
(21.4°C)
71.7°F
(22.1°C)
-1.2°F
(-0.7°C)
24th Coolest Coolest since: 1985 1967
103rd Warmest Warmest since: 1988 1936
Ties: 1896, 1927, 1985
Jun–Sep 1989
4-Month
70.5°F
(21.4°C)
71.6°F
(22.0°C)
-1.1°F
(-0.6°C)
28th Coolest Coolest since: 1985 1915, 1924
99th Warmest Warmest since: 1988 1936
Ties: 2003
May–Sep 1989
5-Month
68.3°F
(20.2°C)
69.7°F
(20.9°C)
-1.4°F
(-0.7°C)
19th Coolest Coolest since: 1976 1924
108th Warmest Warmest since: 1988 1936
Ties: 1903, 1966
Apr–Sep 1989
6-Month
65.5°F
(18.6°C)
66.7°F
(19.3°C)
-1.2°F
(-0.7°C)
23rd Coolest Coolest since: 1982 1907
104th Warmest Warmest since: 1988 2010
Ties: 1909, 1976
Mar–Sep 1989
7-Month
61.9°F
(16.6°C)
62.9°F
(17.2°C)
-1.0°F
(-0.6°C)
29th Coolest Coolest since: 1984 1924
98th Warmest Warmest since: 1988 2012
Ties: 1902, 1923, 1965
Feb–Sep 1989
8-Month
56.9°F
(13.8°C)
58.6°F
(14.8°C)
-1.7°F
(-1.0°C)
15th Coolest Coolest since: 1979 1904
112th Warmest Warmest since: 1988 2012
Ties: 1947, 1951
Jan–Sep 1989
9-Month
54.5°F
(12.5°C)
55.0°F
(12.8°C)
-0.5°F
(-0.3°C)
48th Coolest Coolest since: 1985 1904, 1912
79th Warmest Warmest since: 1988 2012
Ties: 1916, 2009, 2015
Dec 1988–Sep 1989
10-Month
52.1°F
(11.2°C)
52.4°F
(11.3°C)
-0.3°F
(-0.1°C)
50th Coolest Coolest since: 1984 1904
76th Warmest Warmest since: 1988 2012
Ties: 1968, 1975
Nov 1988–Sep 1989
11-Month
51.2°F
(10.7°C)
51.3°F
(10.7°C)
-0.1°F
(0.0°C)
54th Coolest Coolest since: 1984 1904
72nd Warmest Warmest since: 1988 2012
Ties: 1901, 1903, 1916, 1947, 1966
Oct 1988–Sep 1989
12-Month
51.0°F
(10.6°C)
51.6°F
(10.9°C)
-0.6°F
(-0.3°C)
33rd Coolest Coolest since: 1984 1904
93rd Warmest Warmest since: 1988 2012
Ties: 1927, 1961, 1965, 1968, 1993, 2003
Apr 1988–Sep 1989
18-Month
57.0°F
(13.9°C)
56.7°F
(13.7°C)
0.3°F
(0.2°C)
73rd Coolest Coolest since: 1985 1904, 1918
53rd Warmest Warmest since: 1988 2012
Ties: 1896, 1898, 1913
Oct 1987–Sep 1989
24-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
73rd Coolest Coolest since: 1985 1979
52nd Warmest Warmest since: 1988 2017
Ties: 1898, 1941, 1948, 1950, 1965, 1972, 2004
Oct 1986–Sep 1989
36-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
95th Coolest Coolest since: 1986 1979
29th Warmest Warmest since: 1988 2018
Ties: 1939, 2014
Oct 1985–Sep 1989
48-Month
52.4°F
(11.3°C)
51.5°F
(10.8°C)
0.9°F
(0.5°C)
97th Coolest Coolest since: 1987 1905
26th Warmest Warmest since: 1988 2019
Ties: 1941, 1942, 1990, 2004, 2010, 2014
Oct 1984–Sep 1989
60-Month
52.3°F
(11.3°C)
51.5°F
(10.8°C)
0.8°F
(0.5°C)
87th Coolest Coolest since: 1988 1906
35th Warmest Warmest since: 1987 2020
Ties: 1958, 1999, 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2021, retrieved on June 12, 2021 from https://www.ncdc.noaa.gov/cag/