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 5. East

Average Temperature Rankings, May 2008

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
May 2008
1-Month 		57.5°F
(14.2°C)		 61.0°F
(16.1°C)		 -3.5°F
(-1.9°C)		 18th Coolest
Coolest since:
 1907
111th Warmest
Warmest since:
 2018
Ties: 1925, 1931, 1983, 2002
Apr–May 2008
2-Month 		54.4°F
(12.4°C)		 55.5°F
(13.1°C)		 -1.1°F
(-0.7°C)		 35th Coolest
Coolest since:
 1907
94th Warmest
Warmest since:
 1977
Ties: 1967
Mar–May 2008
3-Month 		48.6°F
(9.2°C)		 49.7°F
(9.8°C)		 -1.1°F
(-0.6°C)		 37th Coolest
Coolest since:
 1960
92nd Warmest
Warmest since:
 2012
Feb–May 2008
4-Month 		42.7°F
(5.9°C)		 44.2°F
(6.8°C)		 -1.5°F
(-0.9°C)		 31st Coolest
Coolest since:
 1978
98th Warmest
Warmest since:
 2012
Ties: 1897
Jan–May 2008
5-Month 		39.2°F
(4.0°C)		 40.1°F
(4.5°C)		 -0.9°F
(-0.5°C)		 39th Coolest
Coolest since:
 1978
90th Warmest
Warmest since:
 2012
Dec 2007–May 2008
6-Month 		37.5°F
(3.1°C)		 38.1°F
(3.4°C)		 -0.6°F
(-0.3°C)		 41st Coolest
Coolest since:
 1904, 1978
87th Warmest
Warmest since:
 2012
Ties: 1968, 1997
Nov 2007–May 2008
7-Month 		38.0°F
(3.3°C)		 38.3°F
(3.5°C)		 -0.3°F
(-0.2°C)		 49th Coolest
Coolest since:
 1904
79th Warmest
Warmest since:
 2012
Ties: 1958
Oct 2007–May 2008
8-Month 		40.7°F
(4.8°C)		 40.2°F
(4.6°C)		 0.5°F
(0.2°C)		 75th Coolest
Coolest since:
 1904
53rd Warmest
Warmest since:
 2012
Sep 2007–May 2008
9-Month 		43.8°F
(6.6°C)		 43.0°F
(6.1°C)		 0.8°F
(0.5°C)		 84th Coolest
Coolest since:
 1904
44th Warmest
Warmest since:
 2012
Ties: 1919, 1934
Aug 2007–May 2008
10-Month 		47.1°F
(8.4°C)		 45.9°F
(7.7°C)		 1.2°F
(0.7°C)		 99th Coolest
Coolest since:
 1904
29th Warmest
Warmest since:
 2012
Ties: 1919, 1922, 1983
Jul 2007–May 2008
11-Month 		49.3°F
(9.6°C)		 48.5°F
(9.2°C)		 0.8°F
(0.4°C)		 88th Coolest
Coolest since:
 1904
40th Warmest
Warmest since:
 2012
Ties: 1919, 1935, 1989, 2018
Jun 2007–May 2008
12-Month 		51.2°F
(10.7°C)		 50.3°F
(10.2°C)		 0.9°F
(0.5°C)		 88th Coolest
Coolest since:
 1904
40th Warmest
Warmest since:
 2012
Ties: 1957, 1988, 2011, 2018
Dec 2006–May 2008
18-Month 		47.7°F
(8.7°C)		 46.2°F
(7.9°C)		 1.5°F
(0.8°C)		 104th Coolest
Coolest since:
 1905
23rd Warmest
Warmest since:
 2017
Ties: 1933, 1934, 1974
Jun 2006–May 2008
24-Month 		51.5°F
(10.8°C)		 50.3°F
(10.2°C)		 1.2°F
(0.6°C)		 104th Coolest
Coolest since:
 1905
23rd Warmest
Warmest since:
 2017
Ties: 1956, 1987, 2001, 2020
Jun 2005–May 2008
36-Month 		52.1°F
(11.2°C)		 50.3°F
(10.2°C)		 1.8°F
(1.0°C)		 115th Coolest
Coolest since:
 1905, 1906
11th Warmest
Warmest since:
 2018
Ties: 1933
Jun 2004–May 2008
48-Month 		51.9°F
(11.1°C)		 50.3°F
(10.2°C)		 1.6°F
(0.9°C)		 115th Coolest
Coolest since:
 1905
10th Warmest
Warmest since:
 2019
Ties: 1956, 2000
Jun 2003–May 2008
60-Month 		51.9°F
(11.1°C)		 50.3°F
(10.2°C)		 1.6°F
(0.9°C)		 120th Coolest
Coolest since:
 1905, 1906, 1908
4th Warmest
Warmest since:
 2020
Ties: 1935, 2003, 2006, 2019

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