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 2022. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1908

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1908
1-Month
69.4°F
(20.8°C)
66.2°F
(19.0°C)
3.2°F
(1.8°C)
106th Coolest Coolest since: 1907 1918
22nd Warmest Warmest since: 1906 1925, 1933
Aug–Sep 1908
2-Month
71.2°F
(21.8°C)
69.8°F
(21.0°C)
1.4°F
(0.8°C)
94th Coolest Coolest since: 1907 1967
34th Warmest Warmest since: 1906 1936
Ties: 1937, 2015
Jul–Sep 1908
3-Month
72.4°F
(22.4°C)
71.7°F
(22.1°C)
0.7°F
(0.3°C)
83rd Coolest Coolest since: 1907 1967
45th Warmest Warmest since: 1906 1936
Ties: 1911, 1922, 1926, 1937
Jun–Sep 1908
4-Month
71.8°F
(22.1°C)
71.7°F
(22.1°C)
0.1°F
(0.0°C)
68th Coolest Coolest since: 1907 1915, 1924
60th Warmest Warmest since: 1906 1936
Ties: 1899, 1916, 1923, 1960, 1964
May–Sep 1908
5-Month
69.9°F
(21.1°C)
69.7°F
(20.9°C)
0.2°F
(0.2°C)
64th Coolest Coolest since: 1907 1924
64th Warmest Warmest since: 1906 1936
Ties: 1916, 1965, 2000, 2001
Apr–Sep 1908
6-Month
66.8°F
(19.3°C)
66.7°F
(19.3°C)
0.1°F
(0.0°C)
64th Coolest Coolest since: 1907 1907
64th Warmest Warmest since: 1906 2010
Ties: 1898, 1937, 1949, 1957, 1995, 2000
Mar–Sep 1908
7-Month
63.5°F
(17.5°C)
62.9°F
(17.2°C)
0.6°F
(0.3°C)
85th Coolest Coolest since: 1907 1924
43rd Warmest Warmest since: 1896 2012
Ties: 1895, 1896, 1913, 1963, 1995, 1999, 2001, 2004
Feb–Sep 1908
8-Month
59.0°F
(15.0°C)
58.6°F
(14.8°C)
0.4°F
(0.2°C)
74th Coolest Coolest since: 1907 1904
54th Warmest Warmest since: 1898 2012
Ties: 1948, 1981
Jan–Sep 1908
9-Month
55.6°F
(13.1°C)
55.0°F
(12.8°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1907 1904, 1912
45th Warmest Warmest since: 1898 2012
Ties: 1914, 1959, 2001
Dec 1907–Sep 1908
10-Month
53.2°F
(11.8°C)
52.4°F
(11.3°C)
0.8°F
(0.5°C)
83rd Coolest Coolest since: 1907 1904
44th Warmest Warmest since: 1896 2012
Ties: 1913, 1949, 1976
Nov 1907–Sep 1908
11-Month
51.9°F
(11.1°C)
51.4°F
(10.8°C)
0.5°F
(0.3°C)
81st Coolest Coolest since: 1907 1904
46th Warmest Warmest since: 1896 2012
Ties: 1944, 1973, 1990
Oct 1907–Sep 1908
12-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
63rd Coolest Coolest since: 1907 1904
64th Warmest Warmest since: 1901 2012
Ties: 1947, 1973, 2008
Apr 1907–Sep 1908
18-Month
55.6°F
(13.1°C)
56.7°F
(13.7°C)
-1.1°F
(-0.6°C)
19th Coolest Coolest since: 1905 1904, 1918
108th Warmest Warmest since: 1907 2012
Ties: 1967, 1996
Oct 1906–Sep 1908
24-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
38th Coolest Coolest since: 1907 1979
88th Warmest Warmest since: 1901 2017
Ties: 1966, 1985
Oct 1905–Sep 1908
36-Month
51.3°F
(10.7°C)
51.6°F
(10.9°C)
-0.3°F
(-0.2°C)
39th Coolest Coolest since: 1907 1979
86th Warmest Warmest since: 1898 2018
Ties: 1909, 1914, 1964, 1972, 1996, 1997
Oct 1904–Sep 1908
48-Month
51.0°F
(10.6°C)
51.6°F
(10.9°C)
-0.6°F
(-0.3°C)
21st Coolest Coolest since: 1907 1905
103rd Warmest Warmest since: 1903 2019
Ties: 1962, 1969
Oct 1903–Sep 1908
60-Month
50.4°F
(10.2°C)
51.6°F
(10.9°C)
-1.2°F
(-0.7°C)
4th Coolest Coolest since: 1907 1906
119th Warmest Warmest since: 1907 2020
Ties: 1907, 1981

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2022, retrieved on June 29, 2022 from https://www.ncei.noaa.gov/cag/