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 2020

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
June 2020
1-Month 		75.5°F
(24.2°C)		 73.9°F
(23.3°C)		 1.6°F
(0.9°C)		 94th Coolest
Coolest since:
 1903
35th Warmest
Warmest since:
 1952
Ties: 1898, 2015
May–Jun 2020
2-Month 		69.4°F
(20.8°C)		 69.5°F
(20.8°C)		 -0.1°F
(0.0°C)		 58th Coolest
Coolest since:
 1907
71st Warmest
Warmest since:
 2018
Ties: 1925, 1931, 1984, 2002
Apr–Jun 2020
3-Month 		64.1°F
(17.8°C)		 64.8°F
(18.2°C)		 -0.7°F
(-0.4°C)		 37th Coolest
Coolest since:
 1907
92nd Warmest
Warmest since:
 2010
Ties: 1958, 1984, 1995, 2008
Mar–Jun 2020
4-Month 		60.5°F
(15.8°C)		 59.7°F
(15.4°C)		 0.8°F
(0.4°C)		 82nd Coolest
Coolest since:
 1960
47th Warmest
Warmest since:
 2012
Ties: 1988
Feb–Jun 2020
5-Month 		55.9°F
(13.3°C)		 54.8°F
(12.7°C)		 1.1°F
(0.6°C)		 87th Coolest
Coolest since:
 1912, 1960, 1978
42nd Warmest
Warmest since:
 2012
Ties: 1981
Jan–Jun 2020
6-Month 		52.7°F
(11.5°C)		 50.8°F
(10.4°C)		 1.9°F
(1.1°C)		 106th Coolest
Coolest since:
 1912, 1978
23rd Warmest
Warmest since:
 2012
Dec 2019–Jun 2020
7-Month 		50.8°F
(10.4°C)		 48.4°F
(9.1°C)		 2.4°F
(1.3°C)		 115th Coolest
Coolest since:
 1978
13th Warmest
Warmest since:
 2012
Nov 2019–Jun 2020
8-Month 		49.4°F
(9.7°C)		 48.0°F
(8.9°C)		 1.4°F
(0.8°C)		 99th Coolest
Coolest since:
 1912
29th Warmest
Warmest since:
 2012
Ties: 1938, 1939, 1967, 1986
Oct 2019–Jun 2020
9-Month 		50.3°F
(10.2°C)		 49.1°F
(9.5°C)		 1.2°F
(0.7°C)		 97th Coolest
Coolest since:
 1912, 1978
31st Warmest
Warmest since:
 2012
Ties: 1922, 1934, 1941, 1942
Sep 2019–Jun 2020
10-Month 		52.8°F
(11.6°C)		 51.0°F
(10.6°C)		 1.8°F
(1.0°C)		 110th Coolest
Coolest since:
 1978
18th Warmest
Warmest since:
 2012
Ties: 1987
Aug 2019–Jun 2020
11-Month 		55.0°F
(12.8°C)		 53.4°F
(11.9°C)		 1.6°F
(0.9°C)		 114th Coolest
Coolest since:
 1904, 1978
14th Warmest
Warmest since:
 2012
Jul 2019–Jun 2020
12-Month 		57.0°F
(13.9°C)		 55.4°F
(13.0°C)		 1.6°F
(0.9°C)		 113th Coolest
Coolest since:
 1904, 1912, 1918, 1978
15th Warmest
Warmest since:
 2012
Ties: 1934, 1942
Jan 2019–Jun 2020
18-Month 		55.2°F
(12.9°C)		 53.9°F
(12.2°C)		 1.3°F
(0.7°C)		 106th Coolest
Coolest since:
 1979
22nd Warmest
Warmest since:
 2017
Ties: 1933, 2005, 2022
Jul 2018–Jun 2020
24-Month 		56.6°F
(13.7°C)		 55.4°F
(13.0°C)		 1.2°F
(0.7°C)		 108th Coolest
Coolest since:
 1978, 1979
19th Warmest
Warmest since:
 2017
Ties: 1942, 2008
Jul 2017–Jun 2020
36-Month 		56.6°F
(13.7°C)		 55.4°F
(13.0°C)		 1.2°F
(0.7°C)		 108th Coolest
Coolest since:
 1979
18th Warmest
Warmest since:
 2018
Ties: 1939, 1954, 2002, 2014
Jul 2016–Jun 2020
48-Month 		57.2°F
(14.0°C)		 55.3°F
(12.9°C)		 1.9°F
(1.1°C)		 123rd Coolest
Coolest since:
 1980
2nd Warmest
Warmest since:
 2019
Ties: 2018
Jul 2015–Jun 2020
60-Month 		57.5°F
(14.2°C)		 55.4°F
(13.0°C)		 2.1°F
(1.2°C)		 123rd Coolest
Coolest since:
 1980
1st Warmest
Warmest to Date
 2020

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