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 3. West

Average Temperature Rankings, April 2002

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
April 2002
1-Month 		52.1°F
(11.2°C)		 51.3°F
(10.7°C)		 0.8°F
(0.5°C)		 78th Coolest
Coolest since:
 2018
51st Warmest
Warmest since:
 2010
Ties: 1932, 1965, 1978, 1998
Mar–Apr 2002
2-Month 		44.3°F
(6.8°C)		 45.2°F
(7.3°C)		 -0.9°F
(-0.5°C)		 48th Coolest
Coolest since:
 1960
81st Warmest
Warmest since:
 2012
Ties: 1970, 2008, 2019
Feb–Apr 2002
3-Month 		40.8°F
(4.9°C)		 39.5°F
(4.2°C)		 1.3°F
(0.7°C)		 88th Coolest
Coolest since:
 1899
41st Warmest
Warmest since:
 2012
Ties: 1896
Jan–Apr 2002
4-Month 		38.8°F
(3.8°C)		 35.6°F
(2.0°C)		 3.2°F
(1.8°C)		 112th Coolest
Coolest since:
 1912
17th Warmest
Warmest since:
 2012
Dec 2001–Apr 2002
5-Month 		38.1°F
(3.4°C)		 34.2°F
(1.2°C)		 3.9°F
(2.2°C)		 120th Coolest
Coolest since:
 1978
8th Warmest
Warmest since:
 2012
Ties: 1998
Nov 2001–Apr 2002
6-Month 		40.1°F
(4.5°C)		 35.2°F
(1.8°C)		 4.9°F
(2.7°C)		 124th Coolest
Coolest since:
 1904, 1912, 1978
4th Warmest
Warmest to Date
 2012
Oct 2001–Apr 2002
7-Month 		42.0°F
(5.6°C)		 37.9°F
(3.3°C)		 4.1°F
(2.3°C)		 121st Coolest
Coolest since:
 1912
7th Warmest
Warmest since:
 2012
Sep 2001–Apr 2002
8-Month 		44.7°F
(7.1°C)		 41.5°F
(5.3°C)		 3.2°F
(1.8°C)		 120th Coolest
Coolest since:
 1904, 1978
8th Warmest
Warmest since:
 2017
Aug 2001–Apr 2002
9-Month 		48.0°F
(8.9°C)		 45.0°F
(7.2°C)		 3.0°F
(1.7°C)		 121st Coolest
Coolest since:
 1978
7th Warmest
Warmest since:
 2017
Ties: 1954, 1999
Jul 2001–Apr 2002
10-Month 		50.9°F
(10.5°C)		 48.1°F
(8.9°C)		 2.8°F
(1.6°C)		 121st Coolest
Coolest since:
 1904
7th Warmest
Warmest since:
 2012
Ties: 1954, 2000
Jun 2001–Apr 2002
11-Month 		52.6°F
(11.4°C)		 50.3°F
(10.2°C)		 2.3°F
(1.2°C)		 119th Coolest
Coolest since:
 1904
9th Warmest
Warmest since:
 2017
Ties: 1935, 1942, 1999
May 2001–Apr 2002
12-Month 		53.6°F
(12.0°C)		 51.3°F
(10.7°C)		 2.3°F
(1.3°C)		 117th Coolest
Coolest since:
 1918
11th Warmest
Warmest since:
 2017
Ties: 1921
Nov 2000–Apr 2002
18-Month 		46.7°F
(8.2°C)		 45.9°F
(7.7°C)		 0.8°F
(0.5°C)		 93rd Coolest
Coolest since:
 1979
34th Warmest
Warmest since:
 2017
Ties: 1923, 1981, 2011
May 2000–Apr 2002
24-Month 		52.0°F
(11.1°C)		 51.2°F
(10.7°C)		 0.8°F
(0.4°C)		 96th Coolest
Coolest since:
 1905
31st Warmest
Warmest since:
 2017
Ties: 1940, 1956, 1990, 2016, 2021, 2022
May 1999–Apr 2002
36-Month 		52.6°F
(11.4°C)		 51.2°F
(10.7°C)		 1.4°F
(0.7°C)		 110th Coolest
Coolest since:
 1979
16th Warmest
Warmest since:
 2018
Ties: 1956, 2001
May 1998–Apr 2002
48-Month 		52.9°F
(11.6°C)		 51.2°F
(10.7°C)		 1.7°F
(0.9°C)		 121st Coolest
Coolest since:
 1980
4th Warmest
Warmest since:
 1935
May 1997–Apr 2002
60-Month 		52.7°F
(11.5°C)		 51.2°F
(10.7°C)		 1.5°F
(0.8°C)		 121st Coolest
Coolest since:
 1906, 1979
3rd Warmest
Warmest since:
 1935

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