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, August 1920

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
August 1920
1-Month		73.0°F
(22.8°C)		76.0°F
(24.4°C)		-3.0°F
(-1.6°C)		11th Coolest
Coolest since:
1915
118th Warmest
Warmest since:
1936
Jul–Aug 1920
2-Month		74.7°F
(23.7°C)		77.0°F
(25.0°C)		-2.3°F
(-1.3°C)		10th Coolest
Coolest since:
1967
119th Warmest
Warmest since:
1936
Ties: 1924, 1994
Jun–Aug 1920
3-Month		74.1°F
(23.4°C)		75.9°F
(24.4°C)		-1.8°F
(-1.0°C)		15th Coolest
Coolest since:
1915, 1927
114th Warmest
Warmest since:
1936
Ties: 1924, 1961, 1974, 1985
May–Aug 1920
4-Month		71.5°F
(21.9°C)		73.2°F
(22.9°C)		-1.7°F
(-1.0°C)		16th Coolest
Coolest since:
1967
113th Warmest
Warmest since:
1936
Apr–Aug 1920
5-Month		67.4°F
(19.7°C)		69.6°F
(20.9°C)		-2.2°F
(-1.2°C)		8th Coolest
Coolest since:
1907
121st Warmest
Warmest since:
2010
Mar–Aug 1920
6-Month		63.5°F
(17.5°C)		65.5°F
(18.6°C)		-2.0°F
(-1.1°C)		7th Coolest
Coolest since:
1904
122nd Warmest
Warmest since:
2012
Ties: 1912, 1961
Feb–Aug 1920
7-Month		59.3°F
(15.2°C)		61.1°F
(16.2°C)		-1.8°F
(-1.0°C)		14th Coolest
Coolest since:
1904
115th Warmest
Warmest since:
2012
Jan–Aug 1920
8-Month		55.3°F
(12.9°C)		57.3°F
(14.1°C)		-2.0°F
(-1.2°C)		10th Coolest
Coolest since:
1912
119th Warmest
Warmest since:
2012
Ties: 1899
Dec 1919–Aug 1920
9-Month		52.5°F
(11.4°C)		54.8°F
(12.7°C)		-2.3°F
(-1.3°C)		5th Coolest
Coolest since:
1904
123rd Warmest
Warmest since:
2012
Ties: 1984
Nov 1919–Aug 1920
10-Month		51.6°F
(10.9°C)		53.8°F
(12.1°C)		-2.2°F
(-1.2°C)		6th Coolest
Coolest since:
1904
122nd Warmest
Warmest since:
2012
Ties: 1940
Oct 1919–Aug 1920
11-Month		52.4°F
(11.3°C)		54.1°F
(12.3°C)		-1.7°F
(-1.0°C)		7th Coolest
Coolest since:
1904
121st Warmest
Warmest since:
2012
Ties: 1940, 1958, 1960, 2014
Sep 1919–Aug 1920
12-Month		53.9°F
(12.2°C)		55.4°F
(13.0°C)		-1.5°F
(-0.8°C)		11th Coolest
Coolest since:
1904
117th Warmest
Warmest since:
2012
Ties: 1902, 1951, 1960
Mar 1919–Aug 1920
18-Month		57.9°F
(14.4°C)		58.7°F
(14.8°C)		-0.8°F
(-0.4°C)		21st Coolest
Coolest since:
1904
107th Warmest
Warmest since:
2012
Ties: 1902, 1963, 1994
Sep 1918–Aug 1920
24-Month		55.0°F
(12.8°C)		55.4°F
(13.0°C)		-0.4°F
(-0.2°C)		38th Coolest
Coolest since:
1979
89th Warmest
Warmest since:
2017
Ties: 1928, 1952
Sep 1917–Aug 1920
36-Month		54.5°F
(12.5°C)		55.4°F
(13.0°C)		-0.9°F
(-0.5°C)		12th Coolest
Coolest since:
1979
114th Warmest
Warmest since:
2018
Ties: 1907, 1912, 1919, 1962
Sep 1916–Aug 1920
48-Month		54.4°F
(12.4°C)		55.3°F
(12.9°C)		-0.9°F
(-0.5°C)		11th Coolest
Coolest since:
1980
114th Warmest
Warmest since:
2019
Ties: 1904, 1961, 1963, 1982
Sep 1915–Aug 1920
60-Month		54.7°F
(12.6°C)		55.3°F
(12.9°C)		-0.6°F
(-0.3°C)		13th Coolest
Coolest since:
1906
111th Warmest
Warmest since:
2020
Ties: 1919, 1963, 1969, 1972, 1978

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