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


Illinois

Average Temperature Rankings, September 1897

View Period (Months):All1234567891011121824
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1897
1-Month
71.3°F
(21.8°C)
66.2°F
(19.0°C)
5.1°F
(2.8°C)
121st Coolest Coolest since: 1896 1918
5th Warmest Warmest to Date 1925, 1933
Aug–Sep 1897
2-Month
71.4°F
(21.9°C)
69.8°F
(21.0°C)
1.6°F
(0.9°C)
94th Coolest Coolest since: 1896 1967
32nd Warmest Warmest since: 1895 1936
Jul–Sep 1897
3-Month
73.2°F
(22.9°C)
71.8°F
(22.1°C)
1.4°F
(0.8°C)
98th Coolest Coolest since: 1896 1967
28th Warmest Warmest to Date 1936
Jun–Sep 1897
4-Month
72.6°F
(22.6°C)
71.7°F
(22.1°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 1896 1915, 1924
38th Warmest Warmest since: 1895 1936
Ties: 1895, 1922, 1938, 1978
May–Sep 1897
5-Month
69.8°F
(21.0°C)
69.8°F
(21.0°C)
0.0°F
(0.0°C)
60th Coolest Coolest to Date 1924
66th Warmest Warmest since: 1896 1936
Ties: 2006
Apr–Sep 1897
6-Month
66.5°F
(19.2°C)
66.7°F
(19.3°C)
-0.2°F
(-0.1°C)
46th Coolest Coolest to Date 1907
80th Warmest Warmest since: 1896 2010
Ties: 1912, 1947, 1969, 2004
Mar–Sep 1897
7-Month
62.5°F
(16.9°C)
62.8°F
(17.1°C)
-0.3°F
(-0.2°C)
46th Coolest Coolest to Date 1924
80th Warmest Warmest since: 1896 2012
Ties: 1903, 1935, 1937, 1978, 2009
Feb–Sep 1897
8-Month
58.5°F
(14.7°C)
58.6°F
(14.8°C)
-0.1°F
(-0.1°C)
59th Coolest Coolest since: 1895 1904
67th Warmest Warmest since: 1896 2012
Ties: 1914
Jan–Sep 1897
9-Month
54.6°F
(12.6°C)
54.9°F
(12.7°C)
-0.3°F
(-0.1°C)
52nd Coolest Coolest since: 1895 1904, 1912
74th Warmest Warmest since: 1896 2012
Ties: 1909, 1937
Dec 1896–Sep 1897
10-Month
52.6°F
(11.4°C)
52.5°F
(11.4°C)
0.1°F
(0.0°C)
71st Coolest Coolest to Date 1904
54th Warmest Warmest since: 1896 2012
Ties: 1980
Nov 1896–Sep 1897
11-Month
51.4°F
(10.8°C)
51.4°F
(10.8°C)
0.0°F
(0.0°C)
64th Coolest Coolest to Date 1904
61st Warmest Warmest since: 1896 2012
Ties: 1909, 1985
Oct 1896–Sep 1897
12-Month
51.3°F
(10.7°C)
51.7°F
(10.9°C)
-0.4°F
(-0.2°C)
44th Coolest Coolest to Date 1904
81st Warmest Warmest since: 1896 2012
Ties: 1928, 1936, 1937, 1956, 1975, 2001
Apr 1896–Sep 1897
18-Month
56.9°F
(13.8°C)
56.6°F
(13.7°C)
0.3°F
(0.1°C)
69th Coolest Coolest to Date 1904, 1918
56th Warmest Warmest since: 1896 2012
Ties: 1944
Oct 1895–Sep 1897
24-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
44th Coolest Coolest to Date 1979
80th Warmest Warmest to Date 2017
Ties: 1925, 1926, 1958, 2009

Citing This Page

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