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 2017

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
April 2017
1-Month		55.5°F
(13.1°C)		51.3°F
(10.7°C)		4.2°F
(2.4°C)		113th Coolest
Coolest since:
2018
17th Warmest
Warmest since:
2010
Ties: 2005
Mar–Apr 2017
2-Month		49.1°F
(9.5°C)		45.2°F
(7.3°C)		3.9°F
(2.2°C)		112th Coolest
Coolest since:
1960
18th Warmest
Warmest since:
2012
Ties: 1929, 1987
Feb–Apr 2017
3-Month		46.1°F
(7.8°C)		39.5°F
(4.2°C)		6.6°F
(3.6°C)		128th Coolest
Coolest since:
1899
2nd Warmest
Warmest since:
2012
Jan–Apr 2017
4-Month		42.0°F
(5.6°C)		35.6°F
(2.0°C)		6.4°F
(3.6°C)		128th Coolest
Coolest since:
1912
2nd Warmest
Warmest since:
2012
Dec 2016–Apr 2017
5-Month		39.1°F
(3.9°C)		34.2°F
(1.2°C)		4.9°F
(2.7°C)		125th Coolest
Coolest since:
1978
4th Warmest
Warmest since:
2012
Nov 2016–Apr 2017
6-Month		40.6°F
(4.8°C)		35.2°F
(1.8°C)		5.4°F
(3.0°C)		127th Coolest
Coolest since:
1904, 1912, 1978
2nd Warmest
Warmest since:
2012
Oct 2016–Apr 2017
7-Month		43.3°F
(6.3°C)		37.9°F
(3.3°C)		5.4°F
(3.0°C)		127th Coolest
Coolest since:
1912
2nd Warmest
Warmest since:
2012
Sep 2016–Apr 2017
8-Month		46.7°F
(8.2°C)		41.5°F
(5.3°C)		5.2°F
(2.9°C)		128th Coolest
Coolest since:
1904, 1978
1st Warmest
Warmest to Date
2017
Aug 2016–Apr 2017
9-Month		49.9°F
(9.9°C)		45.0°F
(7.2°C)		4.9°F
(2.7°C)		128th Coolest
Coolest since:
1978
1st Warmest
Warmest to Date
2017
Jul 2016–Apr 2017
10-Month		52.4°F
(11.3°C)		48.1°F
(8.9°C)		4.3°F
(2.4°C)		127th Coolest
Coolest since:
1904
2nd Warmest
Warmest since:
2012
Jun 2016–Apr 2017
11-Month		54.4°F
(12.4°C)		50.3°F
(10.2°C)		4.1°F
(2.2°C)		128th Coolest
Coolest since:
1904
1st Warmest
Warmest to Date
2017
May 2016–Apr 2017
12-Month		55.1°F
(12.8°C)		51.3°F
(10.7°C)		3.8°F
(2.1°C)		128th Coolest
Coolest since:
1918
1st Warmest
Warmest to Date
2017
Nov 2015–Apr 2017
18-Month		50.2°F
(10.1°C)		45.9°F
(7.7°C)		4.3°F
(2.4°C)		127th Coolest
Coolest since:
1979
1st Warmest
Warmest to Date
2017
May 2015–Apr 2017
24-Month		54.6°F
(12.6°C)		51.2°F
(10.7°C)		3.4°F
(1.9°C)		127th Coolest
Coolest since:
1905
1st Warmest
Warmest to Date
2017
May 2014–Apr 2017
36-Month		53.0°F
(11.7°C)		51.2°F
(10.7°C)		1.8°F
(1.0°C)		123rd Coolest
Coolest since:
1979
4th Warmest
Warmest since:
2018
May 2013–Apr 2017
48-Month		51.9°F
(11.1°C)		51.2°F
(10.7°C)		0.7°F
(0.4°C)		91st Coolest
Coolest since:
1980
35th Warmest
Warmest since:
1935
Ties: 1938, 1943, 1945, 2014
May 2012–Apr 2017
60-Month		51.9°F
(11.1°C)		51.2°F
(10.7°C)		0.7°F
(0.4°C)		91st Coolest
Coolest since:
1906, 1979
34th Warmest
Warmest since:
1935
Ties: 1937, 1945, 1989, 2000, 2005, 2010, 2016

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