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, August 1955

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
August 1955
1-Month		78.0°F
(25.6°C)		76.0°F
(24.4°C)		2.0°F
(1.2°C)		105th Coolest
Coolest since:
1915
24th Warmest
Warmest since:
1936
Ties: 2002
Jul–Aug 1955
2-Month		79.5°F
(26.4°C)		77.0°F
(25.0°C)		2.5°F
(1.4°C)		116th Coolest
Coolest since:
1967
13th Warmest
Warmest since:
1936
Jun–Aug 1955
3-Month		76.2°F
(24.6°C)		75.9°F
(24.4°C)		0.3°F
(0.2°C)		73rd Coolest
Coolest since:
1915, 1927
56th Warmest
Warmest since:
1936
Ties: 1923, 1957, 1973
May–Aug 1955
4-Month		73.9°F
(23.3°C)		73.2°F
(22.9°C)		0.7°F
(0.4°C)		82nd Coolest
Coolest since:
1967
47th Warmest
Warmest since:
1936
Ties: 1916, 1949, 1956, 2001, 2015, 2019
Apr–Aug 1955
5-Month		71.4°F
(21.9°C)		69.6°F
(20.9°C)		1.8°F
(1.0°C)		114th Coolest
Coolest since:
1907
15th Warmest
Warmest since:
2010
Ties: 2001, 2007, 2016
Mar–Aug 1955
6-Month		67.0°F
(19.4°C)		65.5°F
(18.6°C)		1.5°F
(0.8°C)		110th Coolest
Coolest since:
1904
19th Warmest
Warmest since:
2012
Ties: 1914, 1925, 2017
Feb–Aug 1955
7-Month		62.5°F
(16.9°C)		61.1°F
(16.2°C)		1.4°F
(0.7°C)		101st Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Ties: 1911, 1934
Jan–Aug 1955
8-Month		58.8°F
(14.9°C)		57.3°F
(14.1°C)		1.5°F
(0.8°C)		101st Coolest
Coolest since:
1912
28th Warmest
Warmest since:
2012
Ties: 2020
Dec 1954–Aug 1955
9-Month		56.3°F
(13.5°C)		54.8°F
(12.7°C)		1.5°F
(0.8°C)		104th Coolest
Coolest since:
1904
24th Warmest
Warmest since:
2012
Nov 1954–Aug 1955
10-Month		55.1°F
(12.8°C)		53.8°F
(12.1°C)		1.3°F
(0.7°C)		104th Coolest
Coolest since:
1904
24th Warmest
Warmest since:
2012
Ties: 1925
Oct 1954–Aug 1955
11-Month		55.4°F
(13.0°C)		54.1°F
(12.3°C)		1.3°F
(0.7°C)		103rd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
2012
Ties: 1957, 2010
Sep 1954–Aug 1955
12-Month		56.8°F
(13.8°C)		55.4°F
(13.0°C)		1.4°F
(0.8°C)		109th Coolest
Coolest since:
1904
19th Warmest
Warmest since:
2012
Ties: 1939, 1953
Mar 1954–Aug 1955
18-Month		60.4°F
(15.8°C)		58.7°F
(14.8°C)		1.7°F
(1.0°C)		115th Coolest
Coolest since:
1904
13th Warmest
Warmest since:
2012
Ties: 1939, 1987, 2000, 2002, 2007
Sep 1953–Aug 1955
24-Month		57.3°F
(14.1°C)		55.4°F
(13.0°C)		1.9°F
(1.1°C)		118th Coolest
Coolest since:
1979
9th Warmest
Warmest since:
2017
Ties: 1922, 1999, 2007
Sep 1952–Aug 1955
36-Month		57.1°F
(13.9°C)		55.4°F
(13.0°C)		1.7°F
(0.9°C)		117th Coolest
Coolest since:
1979
9th Warmest
Warmest since:
2018
Ties: 2006
Sep 1951–Aug 1955
48-Month		56.8°F
(13.8°C)		55.3°F
(12.9°C)		1.5°F
(0.9°C)		114th Coolest
Coolest since:
1980
11th Warmest
Warmest since:
2019
Ties: 2001
Sep 1950–Aug 1955
60-Month		56.2°F
(13.4°C)		55.3°F
(12.9°C)		0.9°F
(0.5°C)		100th Coolest
Coolest since:
1906
24th Warmest
Warmest since:
2020
Ties: 1925, 1933, 1991, 2004, 2005, 2011

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