Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois

Average Temperature Rankings, September 2013

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2013
1-Month
68.6°F
(20.3°C)
66.2°F
(19.0°C)
2.4°F
(1.3°C)
97th Coolest
Coolest since:
1918
32nd Warmest
Warmest since:
1925, 1933
Aug–Sep 2013
2-Month
70.7°F
(21.5°C)
69.8°F
(21.0°C)
0.9°F
(0.5°C)
86th Coolest
Coolest since:
1967
43rd Warmest
Warmest since:
1936
Ties: 1905, 1919
Jul–Sep 2013
3-Month
71.5°F
(21.9°C)
71.7°F
(22.1°C)
-0.2°F
(-0.2°C)
55th Coolest
Coolest since:
1967
74th Warmest
Warmest since:
1936
Ties: 1899, 1969, 1990
Jun–Sep 2013
4-Month
71.5°F
(21.9°C)
71.6°F
(22.0°C)
-0.1°F
(-0.1°C)
51st Coolest
Coolest since:
1915, 1924
78th Warmest
Warmest since:
1936
Ties: 1905, 1949, 1968
May–Sep 2013
5-Month
70.0°F
(21.1°C)
69.8°F
(21.0°C)
0.2°F
(0.1°C)
71st Coolest
Coolest since:
1924
58th Warmest
Warmest since:
1936
Ties: 1943, 1949, 2017, 2020
Apr–Sep 2013
6-Month
66.7°F
(19.3°C)
66.7°F
(19.3°C)
0.0°F
(0.0°C)
58th Coolest
Coolest since:
1907
71st Warmest
Warmest since:
2010
Ties: 1956, 1963
Mar–Sep 2013
7-Month
62.1°F
(16.7°C)
62.9°F
(17.2°C)
-0.8°F
(-0.5°C)
35th Coolest
Coolest since:
1924
94th Warmest
Warmest since:
2012
Feb–Sep 2013
8-Month
58.0°F
(14.4°C)
58.6°F
(14.8°C)
-0.6°F
(-0.4°C)
37th Coolest
Coolest since:
1904
92nd Warmest
Warmest since:
2012
Ties: 1900, 1901, 1903, 1909, 1972
Jan–Sep 2013
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: 1901, 1943
Dec 2012–Sep 2013
10-Month
53.0°F
(11.7°C)
52.4°F
(11.3°C)
0.6°F
(0.4°C)
76th Coolest
Coolest since:
1904
52nd Warmest
Warmest since:
2012
Ties: 1957, 1986
Nov 2012–Sep 2013
11-Month
52.0°F
(11.1°C)
51.4°F
(10.8°C)
0.6°F
(0.3°C)
86th Coolest
Coolest since:
1904
42nd Warmest
Warmest since:
2012
Ties: 1896, 1930, 1946, 1986
Oct 2012–Sep 2013
12-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
75th Coolest
Coolest since:
1904
53rd Warmest
Warmest since:
2012
Ties: 1901, 1944, 1946, 1959, 1985, 1992, 2019
Apr 2012–Sep 2013
18-Month
57.8°F
(14.3°C)
56.7°F
(13.7°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1904, 1918
28th Warmest
Warmest since:
2012
Ties: 1992, 2020
Oct 2011–Sep 2013
24-Month
54.2°F
(12.3°C)
51.7°F
(10.9°C)
2.5°F
(1.4°C)
125th Coolest
Coolest since:
1979
2nd Warmest
Warmest since:
2017
Ties: 2012
Oct 2010–Sep 2013
36-Month
53.5°F
(11.9°C)
51.6°F
(10.9°C)
1.9°F
(1.0°C)
120th Coolest
Coolest since:
1979
6th Warmest
Warmest since:
2018
Ties: 1933, 2006
Oct 2009–Sep 2013
48-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
121st Coolest
Coolest since:
1905
4th Warmest
Warmest since:
2019
Ties: 2002
Oct 2008–Sep 2013
60-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
114th Coolest
Coolest since:
1906
10th Warmest
Warmest since:
2020
Ties: 2003, 2012

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