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 2018

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
August 2018
1-Month		74.0°F
(23.3°C)		72.1°F
(22.3°C)		1.9°F
(1.0°C)		107th Coolest
Coolest since:
1915
22nd Warmest
Warmest since:
1947
Ties: 1899, 1930, 1991, 1998
Jul–Aug 2018
2-Month		73.9°F
(23.3°C)		73.3°F
(22.9°C)		0.6°F
(0.4°C)		83rd Coolest
Coolest since:
1915
46th Warmest
Warmest since:
1936
Ties: 1999, 2001, 2020
Jun–Aug 2018
3-Month		73.8°F
(23.2°C)		72.3°F
(22.4°C)		1.5°F
(0.8°C)		100th Coolest
Coolest since:
1915
29th Warmest
Warmest since:
1936
Ties: 1955, 2021
May–Aug 2018
4-Month		72.9°F
(22.7°C)		69.5°F
(20.8°C)		3.4°F
(1.9°C)		124th Coolest
Coolest since:
1915
5th Warmest
Warmest since:
1934
Apr–Aug 2018
5-Month		67.0°F
(19.4°C)		65.5°F
(18.6°C)		1.5°F
(0.8°C)		103rd Coolest
Coolest since:
1907
26th Warmest
Warmest since:
1991
Ties: 1949, 1986, 2006, 2016
Mar–Aug 2018
6-Month		62.0°F
(16.7°C)		61.0°F
(16.1°C)		1.0°F
(0.6°C)		91st Coolest
Coolest since:
1904
38th Warmest
Warmest since:
2012
Ties: 1918, 1953, 1954, 1964
Feb–Aug 2018
7-Month		57.5°F
(14.2°C)		56.2°F
(13.4°C)		1.3°F
(0.8°C)		95th Coolest
Coolest since:
1904
34th Warmest
Warmest since:
2012
Jan–Aug 2018
8-Month		53.1°F
(11.7°C)		52.2°F
(11.2°C)		0.9°F
(0.5°C)		85th Coolest
Coolest since:
1904, 1912
44th Warmest
Warmest since:
2012
Ties: 1922, 1976
Dec 2017–Aug 2018
9-Month		50.3°F
(10.2°C)		49.5°F
(9.7°C)		0.8°F
(0.5°C)		82nd Coolest
Coolest since:
1904
46th Warmest
Warmest since:
2012
Ties: 1913, 1990
Nov 2017–Aug 2018
10-Month		49.4°F
(9.7°C)		48.5°F
(9.2°C)		0.9°F
(0.5°C)		91st Coolest
Coolest since:
1904
37th Warmest
Warmest since:
2012
Ties: 1973, 2013
Oct 2017–Aug 2018
11-Month		50.1°F
(10.1°C)		49.0°F
(9.4°C)		1.1°F
(0.7°C)		95th Coolest
Coolest since:
1904
33rd Warmest
Warmest since:
2012
Ties: 1914, 1957
Sep 2017–Aug 2018
12-Month		51.6°F
(10.9°C)		50.3°F
(10.2°C)		1.3°F
(0.7°C)		99th Coolest
Coolest since:
1904
29th Warmest
Warmest since:
2012
Ties: 1931
Mar 2017–Aug 2018
18-Month		55.2°F
(12.9°C)		53.9°F
(12.2°C)		1.3°F
(0.7°C)		102nd Coolest
Coolest since:
1904
26th Warmest
Warmest since:
2012
Ties: 1949, 2008
Sep 2016–Aug 2018
24-Month		52.9°F
(11.6°C)		50.3°F
(10.2°C)		2.6°F
(1.4°C)		123rd Coolest
Coolest since:
1905
4th Warmest
Warmest since:
2017
Ties: 2013
Sep 2015–Aug 2018
36-Month		53.3°F
(11.8°C)		50.3°F
(10.2°C)		3.0°F
(1.6°C)		125th Coolest
Coolest since:
1904
1st Warmest
Warmest to Date
2018
Sep 2014–Aug 2018
48-Month		52.3°F
(11.3°C)		50.3°F
(10.2°C)		2.0°F
(1.1°C)		123rd Coolest
Coolest since:
1905
2nd Warmest
Warmest to Date
2019
Sep 2013–Aug 2018
60-Month		51.5°F
(10.8°C)		50.3°F
(10.2°C)		1.2°F
(0.6°C)		106th Coolest
Coolest since:
1906
18th Warmest
Warmest since:
2020
Ties: 1956, 2005, 2010, 2016

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