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 1945

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Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
August 1945
1-Month 		76.0°F
(24.4°C)		 76.0°F
(24.4°C)		 0.0°F
(0.0°C)		 62nd Coolest
Coolest since:
 1915
67th Warmest
Warmest since:
 1936
Jul–Aug 1945
2-Month 		75.7°F
(24.3°C)		 77.0°F
(25.0°C)		 -1.3°F
(-0.7°C)		 26th Coolest
Coolest since:
 1967
103rd Warmest
Warmest since:
 1936
Ties: 1990, 1996
Jun–Aug 1945
3-Month 		74.0°F
(23.3°C)		 75.9°F
(24.4°C)		 -1.9°F
(-1.1°C)		 14th Coolest
Coolest since:
 1915, 1927
115th Warmest
Warmest since:
 1936
May–Aug 1945
4-Month 		70.7°F
(21.5°C)		 73.2°F
(22.9°C)		 -2.5°F
(-1.4°C)		 9th Coolest
Coolest since:
 1967
120th Warmest
Warmest since:
 1936
Ties: 1961
Apr–Aug 1945
5-Month 		67.8°F
(19.9°C)		 69.6°F
(20.9°C)		 -1.8°F
(-1.0°C)		 13th Coolest
Coolest since:
 1907
116th Warmest
Warmest since:
 2010
Mar–Aug 1945
6-Month 		65.4°F
(18.6°C)		 65.5°F
(18.6°C)		 -0.1°F
(0.0°C)		 56th Coolest
Coolest since:
 1904
73rd Warmest
Warmest since:
 2012
Ties: 1900, 1929, 1962
Feb–Aug 1945
7-Month 		61.1°F
(16.2°C)		 61.1°F
(16.2°C)		 0.0°F
(0.0°C)		 60th Coolest
Coolest since:
 1904
69th Warmest
Warmest since:
 2012
Jan–Aug 1945
8-Month 		57.1°F
(13.9°C)		 57.3°F
(14.1°C)		 -0.2°F
(-0.2°C)		 52nd Coolest
Coolest since:
 1912
77th Warmest
Warmest since:
 2012
Ties: 1927, 1937, 1962, 1967, 1989
Dec 1944–Aug 1945
9-Month 		53.9°F
(12.2°C)		 54.8°F
(12.7°C)		 -0.9°F
(-0.5°C)		 28th Coolest
Coolest since:
 1904
100th Warmest
Warmest since:
 2012
Ties: 1968, 1971, 1996
Nov 1944–Aug 1945
10-Month 		53.1°F
(11.7°C)		 53.8°F
(12.1°C)		 -0.7°F
(-0.4°C)		 33rd Coolest
Coolest since:
 1904
95th Warmest
Warmest since:
 2012
Ties: 1910, 1926, 1948, 1994, 2001, 2003
Oct 1944–Aug 1945
11-Month 		53.5°F
(11.9°C)		 54.1°F
(12.3°C)		 -0.6°F
(-0.4°C)		 35th Coolest
Coolest since:
 1904
93rd Warmest
Warmest since:
 2012
Ties: 1907, 1929
Sep 1944–Aug 1945
12-Month 		54.8°F
(12.7°C)		 55.4°F
(13.0°C)		 -0.6°F
(-0.3°C)		 35th Coolest
Coolest since:
 1904
93rd Warmest
Warmest since:
 2012
Ties: 1967, 1971, 1975, 2015
Mar 1944–Aug 1945
18-Month 		58.5°F
(14.7°C)		 58.7°F
(14.8°C)		 -0.2°F
(-0.1°C)		 50th Coolest
Coolest since:
 1904
78th Warmest
Warmest since:
 2012
Ties: 1913, 1925, 1936, 1966, 1990
Sep 1943–Aug 1945
24-Month 		55.1°F
(12.8°C)		 55.4°F
(13.0°C)		 -0.3°F
(-0.2°C)		 41st Coolest
Coolest since:
 1979
86th Warmest
Warmest since:
 2017
Ties: 1902, 1930, 1958, 1967, 1984
Sep 1942–Aug 1945
36-Month 		55.4°F
(13.0°C)		 55.4°F
(13.0°C)		 0.0°F
(0.0°C)		 55th Coolest
Coolest since:
 1979
71st Warmest
Warmest since:
 2018
Ties: 1910, 1925, 1931, 1946, 1990
Sep 1941–Aug 1945
48-Month 		55.6°F
(13.1°C)		 55.3°F
(12.9°C)		 0.3°F
(0.2°C)		 68th Coolest
Coolest since:
 1980
57th Warmest
Warmest since:
 2019
Ties: 1916, 1946, 1958, 1976
Sep 1940–Aug 1945
60-Month 		55.9°F
(13.3°C)		 55.3°F
(12.9°C)		 0.6°F
(0.4°C)		 82nd Coolest
Coolest since:
 1906
42nd Warmest
Warmest since:
 2020
Ties: 1941, 1954, 1989, 1990, 1995, 1999

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