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 1970

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2023)		Warmest/Coolest
Since		Record
April 1970
1-Month		57.4°F
(14.1°C)		55.3°F
(12.9°C)		2.1°F
(1.2°C)		95th Coolest
Coolest since:
1907
35th Warmest
Warmest since:
1896
Ties: 1895, 1957
Mar–Apr 1970
2-Month		48.9°F
(9.4°C)		50.0°F
(10.0°C)		-1.1°F
(-0.6°C)		44th Coolest
Coolest since:
1960
86th Warmest
Warmest since:
2012
Feb–Apr 1970
3-Month		43.6°F
(6.4°C)		44.9°F
(7.2°C)		-1.3°F
(-0.8°C)		41st Coolest
Coolest since:
1899
89th Warmest
Warmest since:
2012
Ties: 1962
Jan–Apr 1970
4-Month		38.8°F
(3.8°C)		41.5°F
(5.3°C)		-2.7°F
(-1.5°C)		17th Coolest
Coolest since:
1978
113th Warmest
Warmest since:
2012
Dec 1969–Apr 1970
5-Month		37.4°F
(3.0°C)		40.1°F
(4.5°C)		-2.7°F
(-1.5°C)		15th Coolest
Coolest since:
1978
114th Warmest
Warmest since:
2012
Nov 1969–Apr 1970
6-Month		38.2°F
(3.4°C)		40.9°F
(4.9°C)		-2.7°F
(-1.5°C)		13th Coolest
Coolest since:
1912
116th Warmest
Warmest since:
2012
Ties: 1984
Oct 1969–Apr 1970
7-Month		40.7°F
(4.8°C)		43.2°F
(6.2°C)		-2.5°F
(-1.4°C)		11th Coolest
Coolest since:
1899, 1978
118th Warmest
Warmest since:
2012
Ties: 1926
Sep 1969–Apr 1970
8-Month		44.1°F
(6.7°C)		46.5°F
(8.1°C)		-2.4°F
(-1.4°C)		10th Coolest
Coolest since:
1918
119th Warmest
Warmest since:
2017
Aug 1969–Apr 1970
9-Month		47.5°F
(8.6°C)		49.8°F
(9.9°C)		-2.3°F
(-1.3°C)		8th Coolest
Coolest since:
1918
121st Warmest
Warmest since:
2017
Ties: 1902, 1936, 1951
Jul 1969–Apr 1970
10-Month		50.6°F
(10.3°C)		52.6°F
(11.4°C)		-2.0°F
(-1.1°C)		11th Coolest
Coolest since:
1918
118th Warmest
Warmest since:
2012
Ties: 2014
Jun 1969–Apr 1970
11-Month		52.7°F
(11.5°C)		54.5°F
(12.5°C)		-1.8°F
(-1.0°C)		12th Coolest
Coolest since:
1918
117th Warmest
Warmest since:
2012, 2017
May 1969–Apr 1970
12-Month		53.7°F
(12.1°C)		55.4°F
(13.0°C)		-1.7°F
(-0.9°C)		12th Coolest
Coolest since:
1918
117th Warmest
Warmest since:
2012, 2017
Nov 1968–Apr 1970
18-Month		49.0°F
(9.4°C)		50.5°F
(10.3°C)		-1.5°F
(-0.9°C)		7th Coolest
Coolest since:
1905, 1979
121st Warmest
Warmest since:
2017
Ties: 1900, 2015
May 1968–Apr 1970
24-Month		54.0°F
(12.2°C)		55.4°F
(13.0°C)		-1.4°F
(-0.8°C)		7th Coolest
Coolest since:
1978
121st Warmest
Warmest since:
2017
Ties: 1906
May 1967–Apr 1970
36-Month		53.7°F
(12.1°C)		55.4°F
(13.0°C)		-1.7°F
(-0.9°C)		4th Coolest
Coolest since:
1979
123rd Warmest
Warmest since:
2018
May 1966–Apr 1970
48-Month		54.2°F
(12.3°C)		55.3°F
(12.9°C)		-1.1°F
(-0.6°C)		7th Coolest
Coolest since:
1980
119th Warmest
Warmest since:
2019
Ties: 1978
May 1965–Apr 1970
60-Month		54.5°F
(12.5°C)		55.3°F
(12.9°C)		-0.8°F
(-0.4°C)		10th Coolest
Coolest since:
1980, 1981
115th Warmest
Warmest since:
2020
Ties: 1962

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