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, June 1987

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
June 1987
1-Month		76.6°F
(24.8°C)		73.9°F
(23.3°C)		2.7°F
(1.5°C)		110th Coolest
Coolest since:
1903
19th Warmest
Warmest since:
1952
May–Jun 1987
2-Month		74.0°F
(23.3°C)		69.5°F
(20.8°C)		4.5°F
(2.5°C)		126th Coolest
Coolest since:
1907
3rd Warmest
Warmest since:
2018
Apr–Jun 1987
3-Month		67.9°F
(19.9°C)		64.7°F
(18.2°C)		3.2°F
(1.7°C)		122nd Coolest
Coolest since:
1907
7th Warmest
Warmest since:
2010
Mar–Jun 1987
4-Month		63.0°F
(17.2°C)		59.7°F
(15.4°C)		3.3°F
(1.8°C)		123rd Coolest
Coolest since:
1960
6th Warmest
Warmest since:
2012
Ties: 2007
Feb–Jun 1987
5-Month		58.1°F
(14.5°C)		54.7°F
(12.6°C)		3.4°F
(1.9°C)		122nd Coolest
Coolest since:
1912, 1960, 1978
7th Warmest
Warmest since:
2012
Ties: 2016
Jan–Jun 1987
6-Month		53.6°F
(12.0°C)		50.8°F
(10.4°C)		2.8°F
(1.6°C)		118th Coolest
Coolest since:
1912
11th Warmest
Warmest since:
2012
Ties: 2000
Dec 1986–Jun 1987
7-Month		50.9°F
(10.5°C)		48.5°F
(9.2°C)		2.4°F
(1.3°C)		116th Coolest
Coolest since:
1978
12th Warmest
Warmest since:
2012
Nov 1986–Jun 1987
8-Month		49.8°F
(9.9°C)		48.0°F
(8.9°C)		1.8°F
(1.0°C)		110th Coolest
Coolest since:
1912
18th Warmest
Warmest since:
2012
Oct 1986–Jun 1987
9-Month		50.7°F
(10.4°C)		49.1°F
(9.5°C)		1.6°F
(0.9°C)		106th Coolest
Coolest since:
1912, 1978
22nd Warmest
Warmest since:
2012
Ties: 1976, 1995
Sep 1986–Jun 1987
10-Month		52.8°F
(11.6°C)		51.1°F
(10.6°C)		1.7°F
(1.0°C)		110th Coolest
Coolest since:
1978
18th Warmest
Warmest since:
2012
Ties: 2020
Aug 1986–Jun 1987
11-Month		54.6°F
(12.6°C)		53.3°F
(11.8°C)		1.3°F
(0.8°C)		102nd Coolest
Coolest since:
1904, 1978
26th Warmest
Warmest since:
2012
Ties: 1953, 1957, 1974, 1992
Jul 1986–Jun 1987
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, 1918, 1978
19th Warmest
Warmest since:
2012
Ties: 2004
Jan 1986–Jun 1987
18-Month		55.6°F
(13.1°C)		53.9°F
(12.2°C)		1.7°F
(0.9°C)		110th Coolest
Coolest since:
1979
18th Warmest
Warmest since:
2017
Ties: 1953
Jul 1985–Jun 1987
24-Month		56.5°F
(13.6°C)		55.4°F
(13.0°C)		1.1°F
(0.6°C)		105th Coolest
Coolest since:
1978, 1979
22nd Warmest
Warmest since:
2017
Ties: 1934, 2016, 2021
Jul 1984–Jun 1987
36-Month		56.1°F
(13.4°C)		55.4°F
(13.0°C)		0.7°F
(0.4°C)		92nd Coolest
Coolest since:
1979
34th Warmest
Warmest since:
2018
Ties: 1944, 1991
Jul 1983–Jun 1987
48-Month		55.8°F
(13.2°C)		55.3°F
(12.9°C)		0.5°F
(0.3°C)		80th Coolest
Coolest since:
1980
45th Warmest
Warmest since:
2019
Ties: 1925, 1938, 1945, 1958, 1990, 1999, 2016
Jul 1982–Jun 1987
60-Month		55.7°F
(13.2°C)		55.3°F
(12.9°C)		0.4°F
(0.3°C)		71st Coolest
Coolest since:
1980, 1981
53rd Warmest
Warmest since:
2020
Ties: 1940, 1944, 1950, 1954, 1959, 1994

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