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, June 2017

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
June 2017
1-Month 		74.5°F
(23.6°C)		 73.9°F
(23.3°C)		 0.6°F
(0.3°C)		 71st Coolest
Coolest since:
 1903
58th Warmest
Warmest since:
 1952
May–Jun 2017
2-Month 		70.2°F
(21.2°C)		 69.4°F
(20.8°C)		 0.8°F
(0.4°C)		 80th Coolest
Coolest since:
 1907
49th Warmest
Warmest since:
 2018
Ties: 2013, 2019
Apr–Jun 2017
3-Month 		67.0°F
(19.4°C)		 64.8°F
(18.2°C)		 2.2°F
(1.2°C)		 114th Coolest
Coolest since:
 1907
15th Warmest
Warmest since:
 2010
Ties: 1922, 2011
Mar–Jun 2017
4-Month 		62.3°F
(16.8°C)		 59.7°F
(15.4°C)		 2.6°F
(1.4°C)		 118th Coolest
Coolest since:
 1960
11th Warmest
Warmest since:
 2012
Feb–Jun 2017
5-Month 		59.0°F
(15.0°C)		 54.7°F
(12.6°C)		 4.3°F
(2.4°C)		 127th Coolest
Coolest since:
 1912, 1960, 1978
2nd Warmest
Warmest since:
 2012
Ties: 1991
Jan–Jun 2017
6-Month 		55.5°F
(13.1°C)		 50.8°F
(10.4°C)		 4.7°F
(2.7°C)		 127th Coolest
Coolest since:
 1912, 1978
2nd Warmest
Warmest since:
 2012
Dec 2016–Jun 2017
7-Month 		52.5°F
(11.4°C)		 48.5°F
(9.2°C)		 4.0°F
(2.2°C)		 125th Coolest
Coolest since:
 1978
3rd Warmest
Warmest since:
 2012
Nov 2016–Jun 2017
8-Month 		52.2°F
(11.2°C)		 48.1°F
(8.9°C)		 4.1°F
(2.3°C)		 125th Coolest
Coolest since:
 1912
3rd Warmest
Warmest since:
 2012
Oct 2016–Jun 2017
9-Month 		53.4°F
(11.9°C)		 49.1°F
(9.5°C)		 4.3°F
(2.4°C)		 126th Coolest
Coolest since:
 1912, 1978
2nd Warmest
Warmest since:
 2012
Sep 2016–Jun 2017
10-Month 		55.3°F
(12.9°C)		 51.1°F
(10.6°C)		 4.2°F
(2.3°C)		 126th Coolest
Coolest since:
 1978
2nd Warmest
Warmest since:
 2012
Ties: 1932
Aug 2016–Jun 2017
11-Month 		57.3°F
(14.1°C)		 53.3°F
(11.8°C)		 4.0°F
(2.3°C)		 126th Coolest
Coolest since:
 1904, 1978
2nd Warmest
Warmest since:
 2012
Jul 2016–Jun 2017
12-Month 		59.1°F
(15.1°C)		 55.3°F
(12.9°C)		 3.8°F
(2.2°C)		 126th Coolest
Coolest since:
 1904, 1912, 1918, 1978
2nd Warmest
Warmest since:
 2012
Ties: 1932
Jan 2016–Jun 2017
18-Month 		57.4°F
(14.1°C)		 53.9°F
(12.2°C)		 3.5°F
(1.9°C)		 127th Coolest
Coolest since:
 1979
1st Warmest
Warmest to Date
 2017
Jul 2015–Jun 2017
24-Month 		58.8°F
(14.9°C)		 55.4°F
(13.0°C)		 3.4°F
(1.9°C)		 126th Coolest
Coolest since:
 1978, 1979
1st Warmest
Warmest to Date
 2017
Jul 2014–Jun 2017
36-Month 		57.4°F
(14.1°C)		 55.4°F
(13.0°C)		 2.0°F
(1.1°C)		 124th Coolest
Coolest since:
 1979
2nd Warmest
Warmest since:
 2018
Ties: 1934, 2000, 2013
Jul 2013–Jun 2017
48-Month 		56.5°F
(13.6°C)		 55.3°F
(12.9°C)		 1.2°F
(0.7°C)		 104th Coolest
Coolest since:
 1980
21st Warmest
Warmest since:
 2019
Jul 2012–Jun 2017
60-Month 		56.5°F
(13.6°C)		 55.4°F
(13.0°C)		 1.1°F
(0.6°C)		 107th Coolest
Coolest since:
 1980
17th Warmest
Warmest since:
 2020
Ties: 1956, 2003, 2018

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