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 5. East

Average Temperature Rankings, August 1940

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
August 1940
1-Month		73.5°F
(23.1°C)		72.1°F
(22.3°C)		1.4°F
(0.8°C)		95th Coolest
Coolest since:
1915
34th Warmest
Warmest since:
1947
Jul–Aug 1940
2-Month		74.4°F
(23.6°C)		73.3°F
(22.9°C)		1.1°F
(0.7°C)		95th Coolest
Coolest since:
1915
34th Warmest
Warmest since:
1936
Ties: 1933, 2006
Jun–Aug 1940
3-Month		73.4°F
(23.0°C)		72.3°F
(22.4°C)		1.1°F
(0.6°C)		93rd Coolest
Coolest since:
1915
36th Warmest
Warmest since:
1936
Ties: 1984, 2007
May–Aug 1940
4-Month		69.4°F
(20.8°C)		69.5°F
(20.8°C)		-0.1°F
(0.0°C)		58th Coolest
Coolest since:
1915
71st Warmest
Warmest since:
1934
Apr–Aug 1940
5-Month		65.0°F
(18.3°C)		65.5°F
(18.6°C)		-0.5°F
(-0.3°C)		36th Coolest
Coolest since:
1907
93rd Warmest
Warmest since:
1991
Ties: 1905, 1923, 1960, 1989
Mar–Aug 1940
6-Month		60.0°F
(15.6°C)		61.0°F
(16.1°C)		-1.0°F
(-0.5°C)		28th Coolest
Coolest since:
1904
101st Warmest
Warmest since:
2012
Ties: 1902, 1923
Feb–Aug 1940
7-Month		55.5°F
(13.1°C)		56.2°F
(13.4°C)		-0.7°F
(-0.3°C)		40th Coolest
Coolest since:
1904
89th Warmest
Warmest since:
2012
Ties: 1980, 1997
Jan–Aug 1940
8-Month		50.1°F
(10.1°C)		52.2°F
(11.2°C)		-2.1°F
(-1.1°C)		14th Coolest
Coolest since:
1904, 1912
115th Warmest
Warmest since:
2012
Ties: 1905
Dec 1939–Aug 1940
9-Month		48.2°F
(9.0°C)		49.5°F
(9.7°C)		-1.3°F
(-0.7°C)		21st Coolest
Coolest since:
1904
107th Warmest
Warmest since:
2012
Ties: 1996
Nov 1939–Aug 1940
10-Month		47.2°F
(8.4°C)		48.5°F
(9.2°C)		-1.3°F
(-0.8°C)		22nd Coolest
Coolest since:
1904
106th Warmest
Warmest since:
2012
Ties: 1970
Oct 1939–Aug 1940
11-Month		47.9°F
(8.8°C)		49.0°F
(9.4°C)		-1.1°F
(-0.6°C)		27th Coolest
Coolest since:
1904
101st Warmest
Warmest since:
2012
Ties: 1927
Sep 1939–Aug 1940
12-Month		49.8°F
(9.9°C)		50.3°F
(10.2°C)		-0.5°F
(-0.3°C)		38th Coolest
Coolest since:
1904
90th Warmest
Warmest since:
2012
Ties: 1906, 1908
Mar 1939–Aug 1940
18-Month		53.6°F
(12.0°C)		53.9°F
(12.2°C)		-0.3°F
(-0.2°C)		50th Coolest
Coolest since:
1904
78th Warmest
Warmest since:
2012
Ties: 1901, 1906, 1913, 1980
Sep 1938–Aug 1940
24-Month		50.7°F
(10.4°C)		50.3°F
(10.2°C)		0.4°F
(0.2°C)		75th Coolest
Coolest since:
1905
52nd Warmest
Warmest since:
2017
Ties: 1975, 1993, 1996, 2004
Sep 1937–Aug 1940
36-Month		50.8°F
(10.4°C)		50.3°F
(10.2°C)		0.5°F
(0.2°C)		77th Coolest
Coolest since:
1904
49th Warmest
Warmest since:
2018
Ties: 1944, 1975, 1985
Sep 1936–Aug 1940
48-Month		50.7°F
(10.4°C)		50.3°F
(10.2°C)		0.4°F
(0.2°C)		70th Coolest
Coolest since:
1905
55th Warmest
Warmest since:
2019
Ties: 1943, 1958
Sep 1935–Aug 1940
60-Month		50.4°F
(10.2°C)		50.3°F
(10.2°C)		0.1°F
(0.0°C)		54th Coolest
Coolest since:
1906
70th Warmest
Warmest since:
2020
Ties: 1948, 1952, 1986, 1996

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