Statewide Rankings

Statewide 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

Average Temperature Rankings, July 2017

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
July 2017
1-Month 		76.1°F
(24.5°C)		 75.6°F
(24.2°C)		 0.5°F
(0.3°C)		 84th Coolest
Coolest since:
 2009, 2014
45th Warmest
Warmest since:
 1936
Ties: 1940, 1969
Jun–Jul 2017
2-Month 		74.4°F
(23.6°C)		 73.5°F
(23.1°C)		 0.9°F
(0.5°C)		 92nd Coolest
Coolest since:
 1915, 1958
37th Warmest
Warmest since:
 1934
Ties: 1923, 1941, 1964, 1995, 2021
May–Jul 2017
3-Month 		70.2°F
(21.2°C)		 69.7°F
(20.9°C)		 0.5°F
(0.3°C)		 77th Coolest
Coolest since:
 1924
52nd Warmest
Warmest since:
 1934
Ties: 1970, 2001
Apr–Jul 2017
4-Month 		66.8°F
(19.3°C)		 65.2°F
(18.4°C)		 1.6°F
(0.9°C)		 104th Coolest
Coolest since:
 1907
25th Warmest
Warmest since:
 1934
Ties: 1930, 1998
Mar–Jul 2017
5-Month 		62.1°F
(16.7°C)		 60.1°F
(15.6°C)		 2.0°F
(1.1°C)		 116th Coolest
Coolest since:
 1960
13th Warmest
Warmest since:
 2012
Feb–Jul 2017
6-Month 		58.6°F
(14.8°C)		 55.0°F
(12.8°C)		 3.6°F
(2.0°C)		 124th Coolest
Coolest since:
 1947
5th Warmest
Warmest since:
 2012
Jan–Jul 2017
7-Month 		54.8°F
(12.7°C)		 50.7°F
(10.4°C)		 4.1°F
(2.3°C)		 126th Coolest
Coolest since:
 1912
3rd Warmest
Warmest since:
 2012
Dec 2016–Jul 2017
8-Month 		51.6°F
(10.9°C)		 48.1°F
(8.9°C)		 3.5°F
(2.0°C)		 124th Coolest
Coolest since:
 1904
4th Warmest
Warmest since:
 2012
Nov 2016–Jul 2017
9-Month 		51.2°F
(10.7°C)		 47.2°F
(8.4°C)		 4.0°F
(2.3°C)		 126th Coolest
Coolest since:
 1904
2nd Warmest
Warmest since:
 2012
Ties: 2016
Oct 2016–Jul 2017
10-Month 		52.1°F
(11.2°C)		 48.0°F
(8.9°C)		 4.1°F
(2.3°C)		 126th Coolest
Coolest since:
 1904
2nd Warmest
Warmest since:
 2012
Sep 2016–Jul 2017
11-Month 		53.8°F
(12.1°C)		 49.7°F
(9.8°C)		 4.1°F
(2.3°C)		 126th Coolest
Coolest since:
 1904
2nd Warmest
Warmest since:
 2012
Aug 2016–Jul 2017
12-Month 		55.6°F
(13.1°C)		 51.6°F
(10.9°C)		 4.0°F
(2.2°C)		 126th Coolest
Coolest since:
 1904
2nd Warmest
Warmest since:
 2012
Feb 2016–Jul 2017
18-Month 		56.3°F
(13.5°C)		 52.7°F
(11.5°C)		 3.6°F
(2.0°C)		 126th Coolest
Coolest since:
 1918
2nd Warmest
Warmest since:
 2012
Aug 2015–Jul 2017
24-Month 		55.3°F
(12.9°C)		 51.6°F
(10.9°C)		 3.7°F
(2.0°C)		 126th Coolest
Coolest since:
 1905
1st Warmest
Warmest to Date
 2017
Aug 2014–Jul 2017
36-Month 		53.8°F
(12.1°C)		 51.6°F
(10.9°C)		 2.2°F
(1.2°C)		 123rd Coolest
Coolest since:
 1979
3rd Warmest
Warmest since:
 2018
Ties: 2012
Aug 2013–Jul 2017
48-Month 		52.7°F
(11.5°C)		 51.6°F
(10.9°C)		 1.1°F
(0.6°C)		 105th Coolest
Coolest since:
 1905, 1980
20th Warmest
Warmest since:
 2019
Ties: 1922, 2009
Aug 2012–Jul 2017
60-Month 		52.5°F
(11.4°C)		 51.6°F
(10.9°C)		 0.9°F
(0.5°C)		 98th Coolest
Coolest since:
 1906
26th Warmest
Warmest since:
 2020
Ties: 1923, 1933, 1992, 2000, 2014

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