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 2010

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
July 2010
1-Month		80.1°F
(26.7°C)		77.9°F
(25.5°C)		2.2°F
(1.2°C)		109th Coolest
Coolest since:
2014
20th Warmest
Warmest since:
2012
Ties: 1932
Jun–Jul 2010
2-Month		79.5°F
(26.4°C)		75.9°F
(24.4°C)		3.6°F
(2.0°C)		119th Coolest
Coolest since:
1904, 1927
10th Warmest
Warmest since:
1934
May–Jul 2010
3-Month		75.5°F
(24.2°C)		72.3°F
(22.4°C)		3.2°F
(1.8°C)		123rd Coolest
Coolest since:
1924
6th Warmest
Warmest since:
1934
Apr–Jul 2010
4-Month		72.0°F
(22.2°C)		68.1°F
(20.1°C)		3.9°F
(2.1°C)		126th Coolest
Coolest since:
1907
3rd Warmest
Warmest since:
2012
Mar–Jul 2010
5-Month		67.0°F
(19.4°C)		63.4°F
(17.4°C)		3.6°F
(2.0°C)		127th Coolest
Coolest since:
1960
2nd Warmest
Warmest to Date
2012
Feb–Jul 2010
6-Month		60.9°F
(16.1°C)		58.6°F
(14.8°C)		2.3°F
(1.3°C)		112th Coolest
Coolest since:
1947
17th Warmest
Warmest since:
2012
Jan–Jul 2010
7-Month		56.1°F
(13.4°C)		54.7°F
(12.6°C)		1.4°F
(0.8°C)		101st Coolest
Coolest since:
1912
28th Warmest
Warmest since:
2012
Ties: 1944, 1955, 1964, 2007
Dec 2009–Jul 2010
8-Month		53.3°F
(11.8°C)		52.2°F
(11.2°C)		1.1°F
(0.6°C)		90th Coolest
Coolest since:
1978
38th Warmest
Warmest since:
2012
Ties: 1922, 1957
Nov 2009–Jul 2010
9-Month		53.0°F
(11.7°C)		51.3°F
(10.7°C)		1.7°F
(1.0°C)		109th Coolest
Coolest since:
1904, 1912
19th Warmest
Warmest since:
2012
Ties: 2004
Oct 2009–Jul 2010
10-Month		53.0°F
(11.7°C)		52.0°F
(11.1°C)		1.0°F
(0.6°C)		90th Coolest
Coolest since:
1904, 1912
38th Warmest
Warmest since:
2012
Ties: 2011
Sep 2009–Jul 2010
11-Month		54.4°F
(12.4°C)		53.5°F
(11.9°C)		0.9°F
(0.5°C)		90th Coolest
Coolest since:
1904
38th Warmest
Warmest since:
2012
Ties: 1901, 1911, 2019
Aug 2009–Jul 2010
12-Month		56.0°F
(13.3°C)		55.4°F
(13.0°C)		0.6°F
(0.3°C)		82nd Coolest
Coolest since:
1904
46th Warmest
Warmest since:
2012
Ties: 1911, 1933, 1935, 1948, 1949, 1952, 1964
Feb 2009–Jul 2010
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, 2021
Aug 2008–Jul 2010
24-Month		55.7°F
(13.2°C)		55.4°F
(13.0°C)		0.3°F
(0.2°C)		76th Coolest
Coolest since:
1979
51st Warmest
Warmest since:
2017
Ties: 1940, 1946
Aug 2007–Jul 2010
36-Month		56.0°F
(13.3°C)		55.4°F
(13.0°C)		0.6°F
(0.3°C)		87th Coolest
Coolest since:
1979
39th Warmest
Warmest since:
2018
Ties: 1936, 1944, 2011
Aug 2006–Jul 2010
48-Month		56.1°F
(13.4°C)		55.3°F
(12.9°C)		0.8°F
(0.5°C)		95th Coolest
Coolest since:
1980
30th Warmest
Warmest since:
2019
Ties: 1923, 1924, 1944
Aug 2005–Jul 2010
60-Month		56.5°F
(13.6°C)		55.3°F
(12.9°C)		1.2°F
(0.7°C)		108th Coolest
Coolest since:
1906
16th Warmest
Warmest since:
2020
Ties: 1956, 2003, 2007, 2016

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