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 2019

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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
April 2019
1-Month 		57.0°F
(13.9°C)		 55.3°F
(12.9°C)		 1.7°F
(1.0°C)		 87th Coolest
Coolest since:
 1907
42nd Warmest
Warmest since:
 1896
Ties: 1924, 1932, 1974, 1994
Mar–Apr 2019
2-Month 		49.6°F
(9.8°C)		 50.0°F
(10.0°C)		 -0.4°F
(-0.2°C)		 56th Coolest
Coolest since:
 1926, 1960
73rd Warmest
Warmest since:
 2012
Ties: 1897, 1911, 1966
Feb–Apr 2019
3-Month 		45.5°F
(7.5°C)		 44.9°F
(7.2°C)		 0.6°F
(0.3°C)		 71st Coolest
Coolest since:
 1899
58th Warmest
Warmest since:
 2012
Ties: 1956, 1963
Jan–Apr 2019
4-Month 		42.3°F
(5.7°C)		 41.5°F
(5.3°C)		 0.8°F
(0.4°C)		 77th Coolest
Coolest since:
 1978
52nd Warmest
Warmest since:
 2012
Dec 2018–Apr 2019
5-Month 		41.7°F
(5.4°C)		 40.1°F
(4.5°C)		 1.6°F
(0.9°C)		 96th Coolest
Coolest since:
 1978
32nd Warmest
Warmest since:
 2012
Ties: 1908, 1952, 1957
Nov 2018–Apr 2019
6-Month 		41.3°F
(5.2°C)		 40.8°F
(4.9°C)		 0.5°F
(0.3°C)		 72nd Coolest
Coolest since:
 1912
56th Warmest
Warmest since:
 2012
Ties: 1923, 1927, 1934, 1945, 2009
Oct 2018–Apr 2019
7-Month 		43.8°F
(6.6°C)		 43.3°F
(6.3°C)		 0.5°F
(0.3°C)		 78th Coolest
Coolest since:
 1899, 1978
50th Warmest
Warmest since:
 2012
Ties: 1949
Sep 2018–Apr 2019
8-Month 		47.4°F
(8.6°C)		 46.4°F
(8.0°C)		 1.0°F
(0.6°C)		 90th Coolest
Coolest since:
 1918
38th Warmest
Warmest since:
 2017
Ties: 1923, 1981, 2007, 2021
Aug 2018–Apr 2019
9-Month 		50.7°F
(10.4°C)		 49.8°F
(9.9°C)		 0.9°F
(0.5°C)		 90th Coolest
Coolest since:
 1918
38th Warmest
Warmest since:
 2017
Ties: 1923, 1934
Jul 2018–Apr 2019
10-Month 		53.4°F
(11.9°C)		 52.5°F
(11.4°C)		 0.9°F
(0.5°C)		 89th Coolest
Coolest since:
 1918
39th Warmest
Warmest since:
 2012
Ties: 1909, 1914, 1925, 1953, 2013
Jun 2018–Apr 2019
11-Month 		55.7°F
(13.2°C)		 54.5°F
(12.5°C)		 1.2°F
(0.7°C)		 99th Coolest
Coolest since:
 1918
29th Warmest
Warmest since:
 2012, 2017
Ties: 1919
May 2018–Apr 2019
12-Month 		57.1°F
(13.9°C)		 55.4°F
(13.0°C)		 1.7°F
(0.9°C)		 114th Coolest
Coolest since:
 1918
14th Warmest
Warmest since:
 2012, 2017
Ties: 2020
Nov 2017–Apr 2019
18-Month 		51.5°F
(10.8°C)		 50.5°F
(10.3°C)		 1.0°F
(0.5°C)		 97th Coolest
Coolest since:
 1979
30th Warmest
Warmest since:
 2017
Ties: 1934, 1953, 1976
May 2017–Apr 2019
24-Month 		56.4°F
(13.6°C)		 55.4°F
(13.0°C)		 1.0°F
(0.6°C)		 102nd Coolest
Coolest since:
 1978
25th Warmest
Warmest since:
 2017
Ties: 2003, 2005
May 2016–Apr 2019
36-Month 		57.3°F
(14.1°C)		 55.3°F
(12.9°C)		 2.0°F
(1.2°C)		 122nd Coolest
Coolest since:
 1979
4th Warmest
Warmest since:
 2018
Ties: 1955
May 2015–Apr 2019
48-Month 		57.6°F
(14.2°C)		 55.3°F
(12.9°C)		 2.3°F
(1.3°C)		 124th Coolest
Coolest since:
 1980
1st Warmest
Warmest to Date
 2019
May 2014–Apr 2019
60-Month 		57.0°F
(13.9°C)		 55.3°F
(12.9°C)		 1.7°F
(1.0°C)		 121st Coolest
Coolest since:
 1980, 1981
3rd Warmest
Warmest since:
 2020
Ties: 2021

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