Divisional Rankings

Divisional Data Info
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Illinois, Climate Division 7. East Southeast

Average Temperature Rankings, September 1987

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
September 1987
1-Month 		68.3°F
(20.2°C)		 67.4°F
(19.7°C)		 0.9°F
(0.5°C)		 74th Coolest
Coolest since:
 1918
55th Warmest
Warmest since:
 1925
Ties: 1905, 1912
Aug–Sep 1987
2-Month 		71.9°F
(22.2°C)		 70.8°F
(21.6°C)		 1.1°F
(0.6°C)		 90th Coolest
Coolest since:
 1967
39th Warmest
Warmest since:
 1936
Ties: 1898, 1991
Jul–Sep 1987
3-Month 		73.5°F
(23.1°C)		 72.6°F
(22.6°C)		 0.9°F
(0.5°C)		 85th Coolest
Coolest since:
 1967
44th Warmest
Warmest since:
 1936
Ties: 1906, 1977
Jun–Sep 1987
4-Month 		73.9°F
(23.3°C)		 72.6°F
(22.6°C)		 1.3°F
(0.7°C)		 99th Coolest
Coolest since:
 1967
30th Warmest
Warmest since:
 1936
Ties: 1900, 1959, 2019, 2021
May–Sep 1987
5-Month 		73.1°F
(22.8°C)		 70.7°F
(21.5°C)		 2.4°F
(1.3°C)		 118th Coolest
Coolest since:
 1924
11th Warmest
Warmest since:
 1936
Ties: 1913
Apr–Sep 1987
6-Month 		69.8°F
(21.0°C)		 67.7°F
(19.8°C)		 2.1°F
(1.2°C)		 117th Coolest
Coolest since:
 1907
12th Warmest
Warmest since:
 2010
Ties: 1914, 2005, 2007
Mar–Sep 1987
7-Month 		66.4°F
(19.1°C)		 64.0°F
(17.8°C)		 2.4°F
(1.3°C)		 120th Coolest
Coolest since:
 1924
9th Warmest
Warmest since:
 2012
Feb–Sep 1987
8-Month 		62.6°F
(17.0°C)		 59.9°F
(15.5°C)		 2.7°F
(1.5°C)		 123rd Coolest
Coolest since:
 1904, 1924
6th Warmest
Warmest since:
 2012
Ties: 2016, 2017
Jan–Sep 1987
9-Month 		58.7°F
(14.8°C)		 56.4°F
(13.6°C)		 2.3°F
(1.2°C)		 120th Coolest
Coolest since:
 1979
9th Warmest
Warmest since:
 2012
Ties: 1938, 1953, 2002, 2005
Dec 1986–Sep 1987
10-Month 		56.1°F
(13.4°C)		 53.9°F
(12.2°C)		 2.2°F
(1.2°C)		 115th Coolest
Coolest since:
 1904
13th Warmest
Warmest since:
 2012
Ties: 2005
Nov 1986–Sep 1987
11-Month 		54.6°F
(12.6°C)		 52.8°F
(11.6°C)		 1.8°F
(1.0°C)		 111th Coolest
Coolest since:
 1904
17th Warmest
Warmest since:
 2012
Ties: 1919, 1995
Oct 1986–Sep 1987
12-Month 		54.8°F
(12.7°C)		 53.1°F
(11.7°C)		 1.7°F
(1.0°C)		 113th Coolest
Coolest since:
 1904
15th Warmest
Warmest since:
 2012
Ties: 1995, 2006, 2022
Apr 1986–Sep 1987
18-Month 		59.7°F
(15.4°C)		 58.0°F
(14.4°C)		 1.7°F
(1.0°C)		 118th Coolest
Coolest since:
 1918
10th Warmest
Warmest since:
 2012
Ties: 1921, 1922
Oct 1985–Sep 1987
24-Month 		54.5°F
(12.5°C)		 53.1°F
(11.7°C)		 1.4°F
(0.8°C)		 110th Coolest
Coolest since:
 1979
17th Warmest
Warmest since:
 2017
Ties: 2022
Oct 1984–Sep 1987
36-Month 		54.1°F
(12.3°C)		 53.0°F
(11.7°C)		 1.1°F
(0.6°C)		 101st Coolest
Coolest since:
 1979
25th Warmest
Warmest since:
 2018
Ties: 1922, 2004, 2020
Oct 1983–Sep 1987
48-Month 		53.5°F
(11.9°C)		 53.0°F
(11.7°C)		 0.5°F
(0.2°C)		 81st Coolest
Coolest since:
 1980
44th Warmest
Warmest since:
 2019
Ties: 1949, 1994, 1998, 1999, 2015
Oct 1982–Sep 1987
60-Month 		53.7°F
(12.1°C)		 53.0°F
(11.7°C)		 0.7°F
(0.4°C)		 85th Coolest
Coolest since:
 1982
39th Warmest
Warmest since:
 2020
Ties: 1932, 1943, 1954, 1958, 1993

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