Statewide Rankings

Statewide Data Info
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Illinois

Average Temperature Rankings, September 1901

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
September 1901
1-Month
65.7°F
(18.7°C)
66.2°F
(19.0°C)
-0.5°F
(-0.3°C)
53rd Coolest
Coolest since:
1918
76th Warmest
Warmest since:
1925, 1933
Ties: 1979
Aug–Sep 1901
2-Month
69.9°F
(21.1°C)
69.8°F
(21.0°C)
0.1°F
(0.1°C)
66th Coolest
Coolest since:
1967
63rd Warmest
Warmest since:
1936
Jul–Sep 1901
3-Month
73.8°F
(23.2°C)
71.7°F
(22.1°C)
2.1°F
(1.1°C)
112th Coolest
Coolest since:
1967
17th Warmest
Warmest since:
1936
Ties: 1913, 2007
Jun–Sep 1901
4-Month
73.9°F
(23.3°C)
71.7°F
(22.1°C)
2.2°F
(1.2°C)
116th Coolest
Coolest since:
1915, 1924
13th Warmest
Warmest to Date
1936
May–Sep 1901
5-Month
71.2°F
(21.8°C)
69.7°F
(20.9°C)
1.5°F
(0.9°C)
101st Coolest
Coolest since:
1924
28th Warmest
Warmest since:
1936
Ties: 1900, 1922, 1954, 1983
Apr–Sep 1901
6-Month
67.5°F
(19.7°C)
66.7°F
(19.3°C)
0.8°F
(0.4°C)
80th Coolest
Coolest since:
1907
49th Warmest
Warmest since:
2010
Ties: 2022
Mar–Sep 1901
7-Month
63.3°F
(17.4°C)
62.9°F
(17.2°C)
0.4°F
(0.2°C)
72nd Coolest
Coolest since:
1924
57th Warmest
Warmest since:
2012
Ties: 1898, 1944, 1948, 1952, 1980
Feb–Sep 1901
8-Month
58.0°F
(14.4°C)
58.7°F
(14.8°C)
-0.7°F
(-0.4°C)
37th Coolest
Coolest since:
1904
92nd Warmest
Warmest since:
2012
Ties: 1903, 1909, 1972, 2013
Jan–Sep 1901
9-Month
54.8°F
(12.7°C)
54.9°F
(12.7°C)
-0.1°F
(0.0°C)
60th Coolest
Coolest since:
1904, 1912
69th Warmest
Warmest since:
2012
Ties: 1943, 2013
Dec 1900–Sep 1901
10-Month
52.4°F
(11.3°C)
52.4°F
(11.3°C)
0.0°F
(0.0°C)
58th Coolest
Coolest since:
1904
70th Warmest
Warmest since:
2012
Ties: 1906, 1935, 1956, 1959, 1964
Nov 1900–Sep 1901
11-Month
51.2°F
(10.7°C)
51.4°F
(10.8°C)
-0.2°F
(-0.1°C)
54th Coolest
Coolest since:
1904
74th Warmest
Warmest since:
2012
Ties: 1903, 1916, 1947, 1966, 1989
Oct 1900–Sep 1901
12-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
74th Coolest
Coolest since:
1904
54th Warmest
Warmest since:
2012
Ties: 1946, 1959, 1985, 1992, 2013, 2019
Apr 1900–Sep 1901
18-Month
57.3°F
(14.1°C)
56.7°F
(13.7°C)
0.6°F
(0.4°C)
86th Coolest
Coolest since:
1904, 1918
42nd Warmest
Warmest to Date
2012
Ties: 1949, 1957, 1964, 2010
Oct 1899–Sep 1901
24-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
81st Coolest
Coolest since:
1979
46th Warmest
Warmest to Date
2017
Ties: 1938
Oct 1898–Sep 1901
36-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
26th Coolest
Coolest since:
1979
100th Warmest
Warmest since:
2018
Ties: 1951, 1952, 1961, 1967, 1968, 1982
Oct 1897–Sep 1901
48-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
44th Coolest
Coolest since:
1905
81st Warmest
Warmest to Date
2019
Ties: 1952, 1966, 1985
Oct 1896–Sep 1901
60-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
41st Coolest
Coolest since:
1906
83rd Warmest
Warmest to Date
2020
Ties: 1915, 1917, 1921, 1926, 1951, 1968, 1984, 1985, 1996

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