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 8. Southwest

Average Temperature Rankings, April 2022

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
April 2022
1-Month 		54.7°F
(12.6°C)		 55.3°F
(12.9°C)		 -0.6°F
(-0.3°C)		 51st Coolest
Coolest since:
 1907
78th Warmest
Warmest since:
 1896
Mar–Apr 2022
2-Month 		51.3°F
(10.7°C)		 50.0°F
(10.0°C)		 1.3°F
(0.7°C)		 83rd Coolest
Coolest since:
 1960
46th Warmest
Warmest since:
 2012
Ties: 1994
Feb–Apr 2022
3-Month 		45.4°F
(7.4°C)		 44.9°F
(7.2°C)		 0.5°F
(0.2°C)		 68th Coolest
Coolest since:
 1899
61st Warmest
Warmest since:
 2012
Ties: 1961
Jan–Apr 2022
4-Month 		41.3°F
(5.2°C)		 41.5°F
(5.3°C)		 -0.2°F
(-0.1°C)		 59th Coolest
Coolest since:
 1978
70th Warmest
Warmest since:
 2012
Ties: 1915, 1961
Dec 2021–Apr 2022
5-Month 		42.3°F
(5.7°C)		 40.1°F
(4.5°C)		 2.2°F
(1.2°C)		 104th Coolest
Coolest since:
 1978
24th Warmest
Warmest since:
 2012
Nov 2021–Apr 2022
6-Month 		42.6°F
(5.9°C)		 40.9°F
(4.9°C)		 1.7°F
(1.0°C)		 100th Coolest
Coolest since:
 1912
28th Warmest
Warmest since:
 2012
Ties: 1955
Oct 2021–Apr 2022
7-Month 		45.5°F
(7.5°C)		 43.2°F
(6.2°C)		 2.3°F
(1.3°C)		 109th Coolest
Coolest since:
 1899, 1978
19th Warmest
Warmest since:
 2012
Sep 2021–Apr 2022
8-Month 		48.6°F
(9.2°C)		 46.5°F
(8.1°C)		 2.1°F
(1.1°C)		 112th Coolest
Coolest since:
 1918
16th Warmest
Warmest since:
 2017
Ties: 1976, 1991
Aug 2021–Apr 2022
9-Month 		51.8°F
(11.0°C)		 49.8°F
(9.9°C)		 2.0°F
(1.1°C)		 116th Coolest
Coolest since:
 1918
12th Warmest
Warmest since:
 2017
Ties: 1955, 1974, 1992, 2020
Jul 2021–Apr 2022
10-Month 		54.4°F
(12.4°C)		 52.6°F
(11.4°C)		 1.8°F
(1.0°C)		 112th Coolest
Coolest since:
 1918
16th Warmest
Warmest since:
 2012
Ties: 1974, 1992
Jun 2021–Apr 2022
11-Month 		56.3°F
(13.5°C)		 54.5°F
(12.5°C)		 1.8°F
(1.0°C)		 115th Coolest
Coolest since:
 1918
13th Warmest
Warmest since:
 2012, 2017
Ties: 2002
May 2021–Apr 2022
12-Month 		56.9°F
(13.8°C)		 55.4°F
(13.0°C)		 1.5°F
(0.8°C)		 111th Coolest
Coolest since:
 1918
17th Warmest
Warmest since:
 2012, 2017
Ties: 1937, 1939, 1976
Nov 2020–Apr 2022
18-Month 		52.1°F
(11.2°C)		 50.5°F
(10.3°C)		 1.6°F
(0.9°C)		 108th Coolest
Coolest since:
 1905, 1979
19th Warmest
Warmest since:
 2017
Ties: 2016
May 2020–Apr 2022
24-Month 		56.5°F
(13.6°C)		 55.4°F
(13.0°C)		 1.1°F
(0.6°C)		 105th Coolest
Coolest since:
 1978
22nd Warmest
Warmest since:
 2017
Ties: 1942, 2016
May 2019–Apr 2022
36-Month 		56.7°F
(13.7°C)		 55.4°F
(13.0°C)		 1.3°F
(0.7°C)		 110th Coolest
Coolest since:
 1979
16th Warmest
Warmest since:
 2018
Ties: 1923, 1939, 2021
May 2018–Apr 2022
48-Month 		56.8°F
(13.8°C)		 55.3°F
(12.9°C)		 1.5°F
(0.9°C)		 116th Coolest
Coolest since:
 1980
9th Warmest
Warmest since:
 2019
Ties: 1956, 1957, 2007
May 2017–Apr 2022
60-Month 		56.6°F
(13.7°C)		 55.3°F
(12.9°C)		 1.3°F
(0.8°C)		 111th Coolest
Coolest since:
 1980, 1981
13th Warmest
Warmest since:
 2020
Ties: 2016, 2017

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