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 2022. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1955

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1955
1-Month
68.3°F
(20.2°C)
66.2°F
(19.0°C)
2.1°F
(1.2°C)
93rd Coolest Coolest since: 1953 1918
35th Warmest Warmest since: 1954 1925, 1933
Ties: 1900, 1970
Aug–Sep 1955
2-Month
72.4°F
(22.4°C)
69.8°F
(21.0°C)
2.6°F
(1.4°C)
112th Coolest Coolest since: 1954 1967
16th Warmest Warmest since: 1947 1936
Ties: 1933, 1959
Jul–Sep 1955
3-Month
74.9°F
(23.8°C)
71.7°F
(22.1°C)
3.2°F
(1.7°C)
125th Coolest Coolest since: 1954 1967
3rd Warmest Warmest since: 1936 1936
Jun–Sep 1955
4-Month
73.1°F
(22.8°C)
71.6°F
(22.0°C)
1.5°F
(0.8°C)
99th Coolest Coolest since: 1952 1915, 1924
29th Warmest Warmest since: 1954 1936
Ties: 1911, 1952, 1959, 1991
May–Sep 1955
5-Month
71.4°F
(21.9°C)
69.8°F
(21.0°C)
1.6°F
(0.9°C)
105th Coolest Coolest since: 1954 1924
23rd Warmest Warmest since: 1953 1936
Ties: 1913, 1931
Apr–Sep 1955
6-Month
69.1°F
(20.6°C)
66.7°F
(19.3°C)
2.4°F
(1.3°C)
120th Coolest Coolest since: 1954 1907
8th Warmest Warmest since: 1941 2010
Mar–Sep 1955
7-Month
64.9°F
(18.3°C)
62.8°F
(17.1°C)
2.1°F
(1.2°C)
118th Coolest Coolest since: 1954 1924
10th Warmest Warmest since: 1936 2012
Ties: 1988
Feb–Sep 1955
8-Month
60.5°F
(15.8°C)
58.6°F
(14.8°C)
1.9°F
(1.0°C)
112th Coolest Coolest since: 1953 1904
16th Warmest Warmest since: 1954 2012
Jan–Sep 1955
9-Month
56.7°F
(13.7°C)
54.9°F
(12.7°C)
1.8°F
(1.0°C)
107th Coolest Coolest since: 1952 1904, 1912
21st Warmest Warmest since: 1954 2012
Ties: 2010
Dec 1954–Sep 1955
10-Month
54.2°F
(12.3°C)
52.4°F
(11.3°C)
1.8°F
(1.0°C)
104th Coolest Coolest since: 1952 1904
23rd Warmest Warmest since: 1954 2012
Ties: 1999
Nov 1954–Sep 1955
11-Month
53.1°F
(11.7°C)
51.4°F
(10.8°C)
1.7°F
(0.9°C)
107th Coolest Coolest since: 1952 1904
20th Warmest Warmest since: 1954 2012
Ties: 1931, 2021
Oct 1954–Sep 1955
12-Month
53.2°F
(11.8°C)
51.6°F
(10.9°C)
1.6°F
(0.9°C)
108th Coolest Coolest since: 1953 1904
19th Warmest Warmest since: 1954 2012
Ties: 1995
Apr 1954–Sep 1955
18-Month
58.4°F
(14.7°C)
56.6°F
(13.7°C)
1.8°F
(1.0°C)
115th Coolest Coolest since: 1953 1904, 1918
12th Warmest Warmest since: 1954 2012
Oct 1953–Sep 1955
24-Month
53.7°F
(12.1°C)
51.7°F
(10.9°C)
2.0°F
(1.2°C)
117th Coolest Coolest since: 1954 1979
9th Warmest Warmest since: 1933 2017
Ties: 1932, 1933
Oct 1952–Sep 1955
36-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
116th Coolest Coolest since: 1954 1979
9th Warmest Warmest since: 1934 2018
Ties: 1934
Oct 1951–Sep 1955
48-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
114th Coolest Coolest since: 1954 1905
10th Warmest Warmest since: 1935 2019
Ties: 1933, 1935, 2000, 2005, 2012
Oct 1950–Sep 1955
60-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
92nd Coolest Coolest since: 1954 1906
31st Warmest Warmest since: 1942 2020
Ties: 1932, 1987, 1990, 1992

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, Average Temperature, published September 2022, retrieved on October 2, 2022 from https://www.ncdc.noaa.gov/cag/