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 1978

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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
July 1978
1-Month 		78.3°F
(25.7°C)		 77.9°F
(25.5°C)		 0.4°F
(0.2°C)		 81st Coolest
Coolest since:
 2014
48th Warmest
Warmest since:
 2012
Ties: 1987, 1991, 2018
Jun–Jul 1978
2-Month 		76.2°F
(24.6°C)		 76.0°F
(24.4°C)		 0.2°F
(0.2°C)		 78th Coolest
Coolest since:
 1904, 1927
51st Warmest
Warmest since:
 1934
Ties: 1897, 1942, 1957, 1973, 1984, 1994
May–Jul 1978
3-Month 		72.0°F
(22.2°C)		 72.3°F
(22.4°C)		 -0.3°F
(-0.2°C)		 53rd Coolest
Coolest since:
 1924
76th Warmest
Warmest since:
 1934
Ties: 1908, 1966, 1970, 1983
Apr–Jul 1978
4-Month 		68.3°F
(20.2°C)		 68.0°F
(20.0°C)		 0.3°F
(0.2°C)		 69th Coolest
Coolest since:
 1907
60th Warmest
Warmest since:
 2012
Ties: 1919, 1969
Mar–Jul 1978
5-Month 		62.4°F
(16.9°C)		 63.4°F
(17.4°C)		 -1.0°F
(-0.5°C)		 31st Coolest
Coolest since:
 1960
98th Warmest
Warmest since:
 2012
Ties: 1975, 1989
Feb–Jul 1978
6-Month 		55.6°F
(13.1°C)		 58.6°F
(14.8°C)		 -3.0°F
(-1.7°C)		 6th Coolest
Coolest since:
 1947
123rd Warmest
Warmest since:
 2012
Ties: 1912
Jan–Jul 1978
7-Month 		50.7°F
(10.4°C)		 54.7°F
(12.6°C)		 -4.0°F
(-2.2°C)		 3rd Coolest
Coolest since:
 1912
126th Warmest
Warmest since:
 2012
Dec 1977–Jul 1978
8-Month 		48.3°F
(9.1°C)		 52.1°F
(11.2°C)		 -3.8°F
(-2.1°C)		 1st Coolest
Coolest since:
 1978
127th Warmest
Warmest since:
 2012
Nov 1977–Jul 1978
9-Month 		48.1°F
(8.9°C)		 51.4°F
(10.8°C)		 -3.3°F
(-1.9°C)		 3rd Coolest
Coolest since:
 1904, 1912
125th Warmest
Warmest since:
 2012
Oct 1977–Jul 1978
10-Month 		48.8°F
(9.3°C)		 52.0°F
(11.1°C)		 -3.2°F
(-1.8°C)		 3rd Coolest
Coolest since:
 1904, 1912
125th Warmest
Warmest since:
 2012
Sep 1977–Jul 1978
11-Month 		50.7°F
(10.4°C)		 53.5°F
(11.9°C)		 -2.8°F
(-1.5°C)		 2nd Coolest
Coolest since:
 1904
126th Warmest
Warmest since:
 2012
Aug 1977–Jul 1978
12-Month 		52.8°F
(11.6°C)		 55.4°F
(13.0°C)		 -2.6°F
(-1.4°C)		 2nd Coolest
Coolest since:
 1904
126th Warmest
Warmest since:
 2012
Ties: 1918
Feb 1977–Jul 1978
18-Month 		55.7°F
(13.2°C)		 56.5°F
(13.6°C)		 -0.8°F
(-0.4°C)		 28th Coolest
Coolest since:
 1918, 1979
100th Warmest
Warmest since:
 2012
Ties: 1940, 1948, 1958, 1982
Aug 1976–Jul 1978
24-Month 		53.1°F
(11.7°C)		 55.4°F
(13.0°C)		 -2.3°F
(-1.3°C)		 2nd Coolest
Coolest since:
 1979
125th Warmest
Warmest since:
 2017
Aug 1975–Jul 1978
36-Month 		54.1°F
(12.3°C)		 55.3°F
(12.9°C)		 -1.2°F
(-0.6°C)		 7th Coolest
Coolest since:
 1979
119th Warmest
Warmest since:
 2018
Ties: 1918
Aug 1974–Jul 1978
48-Month 		54.3°F
(12.4°C)		 55.4°F
(13.0°C)		 -1.1°F
(-0.6°C)		 9th Coolest
Coolest since:
 1980
116th Warmest
Warmest since:
 2019
Ties: 1918
Aug 1973–Jul 1978
60-Month 		54.7°F
(12.6°C)		 55.3°F
(12.9°C)		 -0.6°F
(-0.3°C)		 14th Coolest
Coolest since:
 1906, 1980
110th Warmest
Warmest since:
 2020
Ties: 1904, 1919, 1963, 1983

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