Divisional Rankings

Divisional Data Info
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Illinois, Climate Division 2. Northeast

Average Temperature Rankings, September 1978

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PeriodValue1901-2000
Mean		AnomalyRank
(1895-2022)		Warmest/Coolest
Since		Record
September 1978
1-Month		68.7°F
(20.4°C)		63.7°F
(17.6°C)		5.0°F
(2.8°C)		123rd Coolest
Coolest since:
1918
6th Warmest
Warmest since:
1897
Aug–Sep 1978
2-Month		70.0°F
(21.1°C)		67.4°F
(19.7°C)		2.6°F
(1.4°C)		112th Coolest
Coolest since:
1902
17th Warmest
Warmest since:
1947
Ties: 2002
Jul–Sep 1978
3-Month		70.6°F
(21.4°C)		69.3°F
(20.7°C)		1.3°F
(0.7°C)		96th Coolest
Coolest since:
1924
33rd Warmest
Warmest since:
1936
Ties: 1895, 1930, 1991
Jun–Sep 1978
4-Month		70.3°F
(21.3°C)		69.2°F
(20.7°C)		1.1°F
(0.6°C)		91st Coolest
Coolest since:
1915
38th Warmest
Warmest since:
2005
Ties: 1911, 1952
May–Sep 1978
5-Month		67.9°F
(19.9°C)		67.1°F
(19.5°C)		0.8°F
(0.4°C)		83rd Coolest
Coolest since:
1924
46th Warmest
Warmest since:
1921, 1988
Ties: 1906, 2015
Apr–Sep 1978
6-Month		64.7°F
(18.2°C)		63.9°F
(17.7°C)		0.8°F
(0.5°C)		79th Coolest
Coolest since:
1907
50th Warmest
Warmest since:
1921
Ties: 1914, 2011
Mar–Sep 1978
7-Month		59.9°F
(15.5°C)		59.9°F
(15.5°C)		0.0°F
(0.0°C)		56th Coolest
Coolest since:
1924
73rd Warmest
Warmest since:
2012
Ties: 1913
Feb–Sep 1978
8-Month		54.2°F
(12.3°C)		55.5°F
(13.1°C)		-1.3°F
(-0.8°C)		21st Coolest
Coolest since:
1904, 1917
108th Warmest
Warmest since:
2012
Jan–Sep 1978
9-Month		49.8°F
(9.9°C)		51.7°F
(10.9°C)		-1.9°F
(-1.0°C)		9th Coolest
Coolest since:
1904, 1912
120th Warmest
Warmest since:
2012
Ties: 1929
Dec 1977–Sep 1978
10-Month		47.0°F
(8.3°C)		49.1°F
(9.5°C)		-2.1°F
(-1.2°C)		10th Coolest
Coolest since:
1904
118th Warmest
Warmest since:
2012
Nov 1977–Sep 1978
11-Month		46.2°F
(7.9°C)		48.1°F
(8.9°C)		-1.9°F
(-1.0°C)		10th Coolest
Coolest since:
1904
118th Warmest
Warmest since:
2012
Ties: 1902
Oct 1977–Sep 1978
12-Month		46.5°F
(8.1°C)		48.5°F
(9.2°C)		-2.0°F
(-1.1°C)		10th Coolest
Coolest since:
1904
118th Warmest
Warmest since:
2012
Ties: 1982
Apr 1977–Sep 1978
18-Month		53.1°F
(11.7°C)		53.6°F
(12.0°C)		-0.5°F
(-0.3°C)		36th Coolest
Coolest since:
1904
92nd Warmest
Warmest since:
2012
Ties: 1907, 1915, 1925, 1943, 1946, 2015
Oct 1976–Sep 1978
24-Month		46.8°F
(8.2°C)		48.5°F
(9.2°C)		-1.7°F
(-1.0°C)		6th Coolest
Coolest since:
1918
121st Warmest
Warmest since:
2017
Ties: 2015
Oct 1975–Sep 1978
36-Month		47.9°F
(8.8°C)		48.4°F
(9.1°C)		-0.5°F
(-0.3°C)		25th Coolest
Coolest since:
1979
101st Warmest
Warmest since:
2000
Ties: 1914, 1971, 1982
Oct 1974–Sep 1978
48-Month		48.0°F
(8.9°C)		48.4°F
(9.1°C)		-0.4°F
(-0.2°C)		25th Coolest
Coolest since:
1905, 1918
100th Warmest
Warmest since:
2001, 2002, 2019
Ties: 1910, 1930, 1952, 1961, 1962, 1965, 1968
Oct 1973–Sep 1978
60-Month		48.2°F
(9.0°C)		48.4°F
(9.1°C)		-0.2°F
(-0.1°C)		39th Coolest
Coolest since:
1905, 1906
85th Warmest
Warmest since:
2002
Ties: 1902, 1910, 1911, 1914, 1921, 1961, 1972

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