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


Illinois

Average Temperature Rankings, September 1926

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
September 1926
1-Month
66.5°F
(19.2°C)
66.2°F
(19.0°C)
0.3°F
(0.2°C)
68th Coolest Coolest since: 1924 1918
60th Warmest Warmest since: 1925 1925, 1933
Aug–Sep 1926
2-Month
70.6°F
(21.4°C)
69.8°F
(21.0°C)
0.8°F
(0.4°C)
82nd Coolest Coolest since: 1924 1967
46th Warmest Warmest since: 1925 1936
Ties: 1911, 1944, 1991
Jul–Sep 1926
3-Month
72.4°F
(22.4°C)
71.8°F
(22.1°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1924 1967
45th Warmest Warmest since: 1925 1936
Ties: 1908, 1911, 1922, 1937
Jun–Sep 1926
4-Month
71.2°F
(21.8°C)
71.7°F
(22.1°C)
-0.5°F
(-0.3°C)
46th Coolest Coolest since: 1924 1915, 1924
82nd Warmest Warmest since: 1925 1936
Ties: 1963, 2001
May–Sep 1926
5-Month
69.7°F
(20.9°C)
69.7°F
(20.9°C)
0.0°F
(0.0°C)
56th Coolest Coolest since: 1924 1924
72nd Warmest Warmest since: 1925 1936
Ties: 1905, 1957, 1973
Apr–Sep 1926
6-Month
65.6°F
(18.7°C)
66.7°F
(19.3°C)
-1.1°F
(-0.6°C)
26th Coolest Coolest since: 1924 1907
102nd Warmest Warmest since: 1925 2010
Ties: 1903, 1929
Mar–Sep 1926
7-Month
61.1°F
(16.2°C)
62.9°F
(17.2°C)
-1.8°F
(-1.0°C)
10th Coolest Coolest since: 1924 1924
118th Warmest Warmest since: 1925 2012
Ties: 1928
Feb–Sep 1926
8-Month
57.6°F
(14.2°C)
58.7°F
(14.8°C)
-1.1°F
(-0.6°C)
25th Coolest Coolest since: 1924 1904
103rd Warmest Warmest since: 1925 2012
Ties: 1915, 1929
Jan–Sep 1926
9-Month
54.2°F
(12.3°C)
54.9°F
(12.7°C)
-0.7°F
(-0.4°C)
35th Coolest Coolest since: 1924 1904, 1912
93rd Warmest Warmest since: 1925 2012
Ties: 1970, 1993, 2003
Dec 1925–Sep 1926
10-Month
51.4°F
(10.8°C)
52.4°F
(11.3°C)
-1.0°F
(-0.5°C)
24th Coolest Coolest since: 1924 1904
103rd Warmest Warmest since: 1925 2012
Ties: 1928
Nov 1925–Sep 1926
11-Month
50.2°F
(10.1°C)
51.4°F
(10.8°C)
-1.2°F
(-0.7°C)
22nd Coolest Coolest since: 1924 1904
105th Warmest Warmest since: 1925 2012
Ties: 1958
Oct 1925–Sep 1926
12-Month
49.7°F
(9.8°C)
51.6°F
(10.9°C)
-1.9°F
(-1.1°C)
10th Coolest Coolest since: 1918 1904
117th Warmest Warmest since: 1925 2012
Ties: 1951, 1982
Apr 1925–Sep 1926
18-Month
56.0°F
(13.3°C)
56.7°F
(13.7°C)
-0.7°F
(-0.4°C)
31st Coolest Coolest since: 1924 1904, 1918
96th Warmest Warmest since: 1925 2012
Ties: 1936, 1963, 1969, 1975
Oct 1924–Sep 1926
24-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
44th Coolest Coolest since: 1925 1979
82nd Warmest Warmest since: 1925 2017
Ties: 1897, 1925, 1958, 2009
Oct 1923–Sep 1926
36-Month
50.9°F
(10.5°C)
51.6°F
(10.9°C)
-0.7°F
(-0.4°C)
21st Coolest Coolest since: 1920 1979
104th Warmest Warmest since: 1925 2018
Ties: 1969
Oct 1922–Sep 1926
48-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
24th Coolest Coolest since: 1920 1905
100th Warmest Warmest since: 1925 2019
Ties: 1899, 1913, 1915, 1917, 1968, 1997
Oct 1921–Sep 1926
60-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
41st Coolest Coolest since: 1921 1906
82nd Warmest Warmest since: 1925 2020
Ties: 1901, 1915, 1917, 1921, 1951, 1968, 1984, 1985, 1996

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2021, retrieved on October 21, 2021 from https://www.ncdc.noaa.gov/cag/