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, July 2020

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  • Top 1/3
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
July 2020
1-Month 		79.9°F
(26.6°C)		 77.9°F
(25.5°C)		 2.0°F
(1.1°C)		 107th Coolest
Coolest since:
 2014
22nd Warmest
Warmest since:
 2012
Jun–Jul 2020
2-Month 		77.7°F
(25.4°C)		 75.9°F
(24.4°C)		 1.8°F
(1.0°C)		 105th Coolest
Coolest since:
 1904, 1927
24th Warmest
Warmest since:
 1934
May–Jul 2020
3-Month 		72.9°F
(22.7°C)		 72.3°F
(22.4°C)		 0.6°F
(0.3°C)		 82nd Coolest
Coolest since:
 1924
47th Warmest
Warmest since:
 1934
Ties: 1993
Apr–Jul 2020
4-Month 		68.0°F
(20.0°C)		 68.0°F
(20.0°C)		 0.0°F
(0.0°C)		 60th Coolest
Coolest since:
 1907
69th Warmest
Warmest since:
 2012
Ties: 1895, 1905, 1939, 1975, 2021
Mar–Jul 2020
5-Month 		64.4°F
(18.0°C)		 63.4°F
(17.4°C)		 1.0°F
(0.6°C)		 92nd Coolest
Coolest since:
 1960
37th Warmest
Warmest since:
 2012
Ties: 1896, 1941, 1942
Feb–Jul 2020
6-Month 		59.9°F
(15.5°C)		 58.6°F
(14.8°C)		 1.3°F
(0.7°C)		 100th Coolest
Coolest since:
 1947
29th Warmest
Warmest since:
 2012
Ties: 1955
Jan–Jul 2020
7-Month 		56.6°F
(13.7°C)		 54.7°F
(12.6°C)		 1.9°F
(1.1°C)		 107th Coolest
Coolest since:
 1912
22nd Warmest
Warmest since:
 2012
Ties: 1934, 1999
Dec 2019–Jul 2020
8-Month 		54.5°F
(12.5°C)		 52.2°F
(11.2°C)		 2.3°F
(1.3°C)		 118th Coolest
Coolest since:
 1978
10th Warmest
Warmest since:
 2012
Ties: 1934, 2000, 2006
Nov 2019–Jul 2020
9-Month 		52.8°F
(11.6°C)		 51.3°F
(10.7°C)		 1.5°F
(0.9°C)		 103rd Coolest
Coolest since:
 1904, 1912
25th Warmest
Warmest since:
 2012
Ties: 1995
Oct 2019–Jul 2020
10-Month 		53.3°F
(11.8°C)		 52.0°F
(11.1°C)		 1.3°F
(0.7°C)		 103rd Coolest
Coolest since:
 1904, 1912
25th Warmest
Warmest since:
 2012
Ties: 1914, 1957, 1972, 1974, 1976
Sep 2019–Jul 2020
11-Month 		55.3°F
(12.9°C)		 53.5°F
(11.9°C)		 1.8°F
(1.0°C)		 113th Coolest
Coolest since:
 1904
15th Warmest
Warmest since:
 2012
Aug 2019–Jul 2020
12-Month 		57.1°F
(13.9°C)		 55.4°F
(13.0°C)		 1.7°F
(0.9°C)		 113th Coolest
Coolest since:
 1904
15th Warmest
Warmest since:
 2012
Feb 2019–Jul 2020
18-Month 		57.8°F
(14.3°C)		 56.4°F
(13.6°C)		 1.4°F
(0.7°C)		 107th Coolest
Coolest since:
 1918, 1979
21st Warmest
Warmest since:
 2012
Ties: 1931, 2005
Aug 2018–Jul 2020
24-Month 		56.7°F
(13.7°C)		 55.4°F
(13.0°C)		 1.3°F
(0.7°C)		 110th Coolest
Coolest since:
 1979
17th Warmest
Warmest since:
 2017
Ties: 1934, 1935, 1942, 2005
Aug 2017–Jul 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: 1956, 2002
Aug 2016–Jul 2020
48-Month 		57.2°F
(14.0°C)		 55.3°F
(12.9°C)		 1.9°F
(1.1°C)		 122nd Coolest
Coolest since:
 1980
3rd Warmest
Warmest since:
 2019
Ties: 1934
Aug 2015–Jul 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:
 1906, 1980
1st Warmest
Warmest to Date
 2020

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