Divisional Rankings

Divisional 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, Climate Division 7. East Southeast

Average Temperature Rankings, September 2020

View Period (Months):
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  • Top 1/3
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2020
1-Month
66.9°F
(19.4°C)
67.4°F
(19.7°C)
-0.5°F
(-0.3°C)
55th Coolest
Coolest since:
1918
74th Warmest
Warmest since:
1925
Aug–Sep 2020
2-Month
69.9°F
(21.1°C)
70.9°F
(21.6°C)
-1.0°F
(-0.5°C)
39th Coolest
Coolest since:
1967
90th Warmest
Warmest since:
1936
Ties: 1957, 1999
Jul–Sep 2020
3-Month
72.4°F
(22.4°C)
72.7°F
(22.6°C)
-0.3°F
(-0.2°C)
56th Coolest
Coolest since:
1967
73rd Warmest
Warmest since:
1936
Ties: 1912, 1968, 1972, 2001
Jun–Sep 2020
4-Month
72.7°F
(22.6°C)
72.6°F
(22.6°C)
0.1°F
(0.0°C)
61st Coolest
Coolest since:
1967
68th Warmest
Warmest since:
1936
Ties: 1897, 1916, 1968, 2008, 2015
May–Sep 2020
5-Month
70.4°F
(21.3°C)
70.7°F
(21.5°C)
-0.3°F
(-0.2°C)
50th Coolest
Coolest since:
1924
79th Warmest
Warmest since:
1936
Ties: 1942, 1972, 1975, 2000
Apr–Sep 2020
6-Month
67.1°F
(19.5°C)
67.7°F
(19.8°C)
-0.6°F
(-0.3°C)
38th Coolest
Coolest since:
1907
91st Warmest
Warmest since:
2010
Ties: 1975, 2003, 2009
Mar–Sep 2020
7-Month
64.1°F
(17.8°C)
64.0°F
(17.8°C)
0.1°F
(0.0°C)
62nd Coolest
Coolest since:
1924
67th Warmest
Warmest since:
2012
Ties: 1949, 1957
Feb–Sep 2020
8-Month
60.4°F
(15.8°C)
59.9°F
(15.5°C)
0.5°F
(0.3°C)
77th Coolest
Coolest since:
1904, 1924
52nd Warmest
Warmest since:
2012
Ties: 1896, 1913, 1949, 2009
Jan–Sep 2020
9-Month
57.5°F
(14.2°C)
56.4°F
(13.6°C)
1.1°F
(0.6°C)
95th Coolest
Coolest since:
1979
34th Warmest
Warmest since:
2012
Ties: 1934, 1973
Dec 2019–Sep 2020
10-Month
55.4°F
(13.0°C)
53.8°F
(12.1°C)
1.6°F
(0.9°C)
107th Coolest
Coolest since:
1904
21st Warmest
Warmest since:
2012
Ties: 1922, 1925, 1934, 2000, 2010, 2022
Nov 2019–Sep 2020
11-Month
53.8°F
(12.1°C)
52.8°F
(11.6°C)
1.0°F
(0.5°C)
90th Coolest
Coolest since:
1904
38th Warmest
Warmest since:
2012
Ties: 1913, 1942
Oct 2019–Sep 2020
12-Month
54.0°F
(12.2°C)
53.1°F
(11.7°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1904
39th Warmest
Warmest since:
2012
Ties: 1913, 1938, 1976
Apr 2019–Sep 2020
18-Month
59.0°F
(15.0°C)
57.9°F
(14.4°C)
1.1°F
(0.6°C)
98th Coolest
Coolest since:
1918
30th Warmest
Warmest since:
2012
Ties: 2019
Oct 2018–Sep 2020
24-Month
53.8°F
(12.1°C)
53.0°F
(11.7°C)
0.8°F
(0.4°C)
93rd Coolest
Coolest since:
1979
34th Warmest
Warmest since:
2017
Ties: 1931, 1943, 1986, 1998, 2001
Oct 2017–Sep 2020
36-Month
54.1°F
(12.3°C)
53.1°F
(11.7°C)
1.0°F
(0.6°C)
102nd Coolest
Coolest since:
1979
24th Warmest
Warmest since:
2018
Ties: 1922, 1935, 1987, 2004
Oct 2016–Sep 2020
48-Month
54.6°F
(12.6°C)
53.0°F
(11.7°C)
1.6°F
(0.9°C)
115th Coolest
Coolest since:
1980
10th Warmest
Warmest since:
2019
Ties: 1935
Oct 2015–Sep 2020
60-Month
55.0°F
(12.8°C)
53.1°F
(11.7°C)
1.9°F
(1.1°C)
123rd Coolest
Coolest since:
1982
1st Warmest
Warmest to Date
2020

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