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


Illinois

Average Temperature Rankings, September 1939

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1939
1-Month
71.2°F
(21.8°C)
66.2°F
(19.0°C)
5.0°F
(2.8°C)
120th Coolest Coolest since: 1938 1918
6th Warmest Warmest since: 1933 1925, 1933
Aug–Sep 1939
2-Month
71.8°F
(22.1°C)
69.8°F
(21.0°C)
2.0°F
(1.1°C)
100th Coolest Coolest since: 1937 1967
26th Warmest Warmest since: 1938 1936
Ties: 1895, 1913
Jul–Sep 1939
3-Month
73.1°F
(22.8°C)
71.7°F
(22.1°C)
1.4°F
(0.7°C)
97th Coolest Coolest since: 1937 1967
29th Warmest Warmest since: 1938 1936
Ties: 1919, 1934, 1959
Jun–Sep 1939
4-Month
73.0°F
(22.8°C)
71.6°F
(22.0°C)
1.4°F
(0.8°C)
93rd Coolest Coolest since: 1938 1915, 1924
33rd Warmest Warmest since: 1936 1936
Ties: 1900
May–Sep 1939
5-Month
71.5°F
(21.9°C)
69.8°F
(21.0°C)
1.7°F
(0.9°C)
105th Coolest Coolest since: 1938 1924
21st Warmest Warmest since: 1936 1936
Ties: 1980
Apr–Sep 1939
6-Month
67.6°F
(19.8°C)
66.7°F
(19.3°C)
0.9°F
(0.5°C)
82nd Coolest Coolest since: 1938 1907
44th Warmest Warmest since: 1938 2010
Ties: 1906, 1938, 1970
Mar–Sep 1939
7-Month
63.9°F
(17.7°C)
62.8°F
(17.1°C)
1.1°F
(0.6°C)
97th Coolest Coolest since: 1937 1924
29th Warmest Warmest since: 1938 2012
Ties: 1914, 1946, 1953, 2000
Feb–Sep 1939
8-Month
59.5°F
(15.3°C)
58.7°F
(14.8°C)
0.8°F
(0.5°C)
86th Coolest Coolest since: 1937 1904
40th Warmest Warmest since: 1938 2012
Ties: 1990
Jan–Sep 1939
9-Month
56.5°F
(13.6°C)
54.9°F
(12.7°C)
1.6°F
(0.9°C)
101st Coolest Coolest since: 1937 1904, 1912
25th Warmest Warmest since: 1938 2012
Ties: 1946
Dec 1938–Sep 1939
10-Month
53.9°F
(12.2°C)
52.4°F
(11.3°C)
1.5°F
(0.9°C)
99th Coolest Coolest since: 1937 1904
26th Warmest Warmest since: 1938 2012
Nov 1938–Sep 1939
11-Month
52.9°F
(11.6°C)
51.4°F
(10.8°C)
1.5°F
(0.8°C)
100th Coolest Coolest since: 1938 1904
25th Warmest Warmest since: 1934 2012
Ties: 1933, 1995
Oct 1938–Sep 1939
12-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
107th Coolest Coolest since: 1938 1904
18th Warmest Warmest since: 1932 2012
Apr 1938–Sep 1939
18-Month
58.1°F
(14.5°C)
56.6°F
(13.7°C)
1.5°F
(0.8°C)
106th Coolest Coolest since: 1938 1904, 1918
19th Warmest Warmest since: 1934 2012
Ties: 1988
Oct 1937–Sep 1939
24-Month
53.0°F
(11.7°C)
51.6°F
(10.9°C)
1.4°F
(0.8°C)
105th Coolest Coolest since: 1938 1979
19th Warmest Warmest since: 1933 2017
Ties: 1992
Oct 1936–Sep 1939
36-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
95th Coolest Coolest since: 1938 1979
28th Warmest Warmest since: 1935 2018
Ties: 1989, 2014
Oct 1935–Sep 1939
48-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
84th Coolest Coolest since: 1938 1905
38th Warmest Warmest since: 1936 2019
Ties: 1954, 2015
Oct 1934–Sep 1939
60-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1938 1906
38th Warmest Warmest since: 1936 2002
Ties: 1941, 1943, 1988, 1995

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2020, retrieved on September 24, 2020 from https://www.ncdc.noaa.gov/cag/