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 2015

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2015
1-Month
70.4°F
(21.3°C)
67.4°F
(19.7°C)
3.0°F
(1.6°C)
104th Coolest
Coolest since:
1918
25th Warmest
Warmest since:
1925
Aug–Sep 2015
2-Month
71.4°F
(21.9°C)
70.8°F
(21.6°C)
0.6°F
(0.3°C)
83rd Coolest
Coolest since:
1967
46th Warmest
Warmest since:
1936
Ties: 1905, 1914, 1937
Jul–Sep 2015
3-Month
72.6°F
(22.6°C)
72.6°F
(22.6°C)
0.0°F
(0.0°C)
64th Coolest
Coolest since:
1967
65th Warmest
Warmest since:
1936
Jun–Sep 2015
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, 2020
May–Sep 2015
5-Month
71.4°F
(21.9°C)
70.7°F
(21.5°C)
0.7°F
(0.4°C)
85th Coolest
Coolest since:
1924
44th Warmest
Warmest since:
1936
Ties: 1932, 2021
Apr–Sep 2015
6-Month
68.7°F
(20.4°C)
67.7°F
(19.8°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1907
39th Warmest
Warmest since:
2010
Ties: 1952, 1970, 1999
Mar–Sep 2015
7-Month
64.5°F
(18.1°C)
64.0°F
(17.8°C)
0.5°F
(0.3°C)
80th Coolest
Coolest since:
1924
49th Warmest
Warmest since:
2012
Ties: 1931, 1948, 1999, 2001
Feb–Sep 2015
8-Month
59.1°F
(15.1°C)
60.0°F
(15.6°C)
-0.9°F
(-0.5°C)
31st Coolest
Coolest since:
1904, 1924
98th Warmest
Warmest since:
2012
Ties: 1910, 1916, 1937, 1969, 1971, 1984
Jan–Sep 2015
9-Month
55.6°F
(13.1°C)
56.4°F
(13.6°C)
-0.8°F
(-0.5°C)
39th Coolest
Coolest since:
1979
90th Warmest
Warmest since:
2012
Ties: 1923
Dec 2014–Sep 2015
10-Month
53.6°F
(12.0°C)
53.9°F
(12.2°C)
-0.3°F
(-0.2°C)
48th Coolest
Coolest since:
1904
80th Warmest
Warmest since:
2012
Ties: 1950, 1964, 1974, 2008
Nov 2014–Sep 2015
11-Month
51.9°F
(11.1°C)
52.8°F
(11.6°C)
-0.9°F
(-0.5°C)
28th Coolest
Coolest since:
1904
100th Warmest
Warmest since:
2012
Ties: 1926, 1961, 1969
Oct 2014–Sep 2015
12-Month
52.2°F
(11.2°C)
53.0°F
(11.7°C)
-0.8°F
(-0.5°C)
29th Coolest
Coolest since:
1904
99th Warmest
Warmest since:
2012
Ties: 1967, 1969, 1997, 2003
Apr 2014–Sep 2015
18-Month
57.2°F
(14.0°C)
57.9°F
(14.4°C)
-0.7°F
(-0.4°C)
30th Coolest
Coolest since:
1918
98th Warmest
Warmest since:
2012
Ties: 1940, 1963, 1969
Oct 2013–Sep 2015
24-Month
51.5°F
(10.8°C)
53.1°F
(11.7°C)
-1.6°F
(-0.9°C)
6th Coolest
Coolest since:
1979
121st Warmest
Warmest since:
2017
Oct 2012–Sep 2015
36-Month
52.1°F
(11.2°C)
53.1°F
(11.7°C)
-1.0°F
(-0.5°C)
9th Coolest
Coolest since:
1979
117th Warmest
Warmest since:
2018
Ties: 1912, 1928, 1969, 1971, 1981
Oct 2011–Sep 2015
48-Month
53.5°F
(11.9°C)
53.1°F
(11.7°C)
0.4°F
(0.2°C)
81st Coolest
Coolest since:
1980
44th Warmest
Warmest since:
2019
Ties: 1949, 1987, 1994, 1998, 1999
Oct 2010–Sep 2015
60-Month
53.5°F
(11.9°C)
53.0°F
(11.7°C)
0.5°F
(0.2°C)
74th Coolest
Coolest since:
1982
50th Warmest
Warmest since:
2020
Ties: 1922, 1938, 1941, 1944, 1976

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