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 2021

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
July 2021
1-Month 		77.0°F
(25.0°C)		 77.9°F
(25.5°C)		 -0.9°F
(-0.5°C)		 45th Coolest
Coolest since:
 2014
84th Warmest
Warmest since:
 2012
Ties: 1956, 1976
Jun–Jul 2021
2-Month 		76.5°F
(24.7°C)		 75.9°F
(24.4°C)		 0.6°F
(0.3°C)		 83rd Coolest
Coolest since:
 1904, 1927
46th Warmest
Warmest since:
 1934
Ties: 1964, 2008
May–Jul 2021
3-Month 		72.3°F
(22.4°C)		 72.3°F
(22.4°C)		 0.0°F
(0.0°C)		 64th Coolest
Coolest since:
 1924
65th Warmest
Warmest since:
 1934
Ties: 1919, 1942, 1969, 1996, 2000
Apr–Jul 2021
4-Month 		68.1°F
(20.1°C)		 68.1°F
(20.1°C)		 0.0°F
(0.0°C)		 65th Coolest
Coolest since:
 1907
64th Warmest
Warmest since:
 2012
Mar–Jul 2021
5-Month 		64.6°F
(18.1°C)		 63.3°F
(17.4°C)		 1.3°F
(0.7°C)		 99th Coolest
Coolest since:
 1960
30th Warmest
Warmest since:
 2012
Ties: 1930, 1985, 2015, 2018
Feb–Jul 2021
6-Month 		58.3°F
(14.6°C)		 58.6°F
(14.8°C)		 -0.3°F
(-0.2°C)		 54th Coolest
Coolest since:
 1947
75th Warmest
Warmest since:
 2012
Ties: 1909, 1972
Jan–Jul 2021
7-Month 		54.9°F
(12.7°C)		 54.7°F
(12.6°C)		 0.2°F
(0.1°C)		 67th Coolest
Coolest since:
 1912
62nd Warmest
Warmest since:
 2012
Ties: 1956
Dec 2020–Jul 2021
8-Month 		52.7°F
(11.5°C)		 52.2°F
(11.2°C)		 0.5°F
(0.3°C)		 75th Coolest
Coolest since:
 1978
53rd Warmest
Warmest since:
 2012
Ties: 1967, 1990, 2013
Nov 2020–Jul 2021
9-Month 		52.4°F
(11.3°C)		 51.3°F
(10.7°C)		 1.1°F
(0.6°C)		 92nd Coolest
Coolest since:
 1904, 1912
36th Warmest
Warmest since:
 2012
Ties: 1933, 1974, 2018
Oct 2020–Jul 2021
10-Month 		52.7°F
(11.5°C)		 51.9°F
(11.1°C)		 0.8°F
(0.4°C)		 83rd Coolest
Coolest since:
 1904, 1912
45th Warmest
Warmest since:
 2012
Ties: 1933, 1949
Sep 2020–Jul 2021
11-Month 		54.2°F
(12.3°C)		 53.6°F
(12.0°C)		 0.6°F
(0.3°C)		 80th Coolest
Coolest since:
 1904
48th Warmest
Warmest since:
 2012
Ties: 2008
Aug 2020–Jul 2021
12-Month 		55.8°F
(13.2°C)		 55.3°F
(12.9°C)		 0.5°F
(0.3°C)		 71st Coolest
Coolest since:
 1904
57th Warmest
Warmest since:
 2012
Ties: 1896
Feb 2020–Jul 2021
18-Month 		57.2°F
(14.0°C)		 56.5°F
(13.6°C)		 0.7°F
(0.4°C)		 89th Coolest
Coolest since:
 1918, 1979
39th Warmest
Warmest since:
 2012
Ties: 1946, 1998, 2010
Aug 2019–Jul 2021
24-Month 		56.5°F
(13.6°C)		 55.4°F
(13.0°C)		 1.1°F
(0.6°C)		 103rd Coolest
Coolest since:
 1979
24th Warmest
Warmest since:
 2017
Ties: 1991, 2008
Aug 2018–Jul 2021
36-Month 		56.4°F
(13.6°C)		 55.4°F
(13.0°C)		 1.0°F
(0.6°C)		 102nd Coolest
Coolest since:
 1979
24th Warmest
Warmest since:
 2018
Ties: 2014
Aug 2017–Jul 2021
48-Month 		56.4°F
(13.6°C)		 55.4°F
(13.0°C)		 1.0°F
(0.6°C)		 104th Coolest
Coolest since:
 1980
21st Warmest
Warmest since:
 2019
Ties: 2005, 2014
Aug 2016–Jul 2021
60-Month 		56.9°F
(13.8°C)		 55.3°F
(12.9°C)		 1.6°F
(0.9°C)		 121st Coolest
Coolest since:
 1906, 1980
3rd Warmest
Warmest since:
 2020
Ties: 1935, 2002, 2008, 2012

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