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 2. Northeast

Average Temperature Rankings, September 2019

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean		 Anomaly Rank
(1895-2022)		 Warmest/Coolest
Since		 Record
September 2019
1-Month 		68.1°F
(20.1°C)		 63.7°F
(17.6°C)		 4.4°F
(2.5°C)		 118th Coolest
Coolest since:
 1918
11th Warmest
Warmest since:
 1897
Ties: 1998
Aug–Sep 2019
2-Month 		69.4°F
(20.8°C)		 67.4°F
(19.7°C)		 2.0°F
(1.1°C)		 105th Coolest
Coolest since:
 1902
24th Warmest
Warmest since:
 1947
Ties: 2015
Jul–Sep 2019
3-Month 		71.7°F
(22.1°C)		 69.4°F
(20.8°C)		 2.3°F
(1.3°C)		 117th Coolest
Coolest since:
 1924
12th Warmest
Warmest since:
 1936
Jun–Sep 2019
4-Month 		70.8°F
(21.6°C)		 69.2°F
(20.7°C)		 1.6°F
(0.9°C)		 102nd Coolest
Coolest since:
 1915
27th Warmest
Warmest since:
 2005
Ties: 1939
May–Sep 2019
5-Month 		68.1°F
(20.1°C)		 67.1°F
(19.5°C)		 1.0°F
(0.6°C)		 90th Coolest
Coolest since:
 1924
39th Warmest
Warmest since:
 1921, 1988
Ties: 1898, 1899, 1930, 1970, 2011
Apr–Sep 2019
6-Month 		64.9°F
(18.3°C)		 63.9°F
(17.7°C)		 1.0°F
(0.6°C)		 87th Coolest
Coolest since:
 1907
42nd Warmest
Warmest since:
 1921
Ties: 1954, 1985
Mar–Sep 2019
7-Month 		60.4°F
(15.8°C)		 59.9°F
(15.5°C)		 0.5°F
(0.3°C)		 72nd Coolest
Coolest since:
 1924
57th Warmest
Warmest since:
 2012
Ties: 1914, 1970
Feb–Sep 2019
8-Month 		55.9°F
(13.3°C)		 55.5°F
(13.1°C)		 0.4°F
(0.2°C)		 75th Coolest
Coolest since:
 1904, 1917
54th Warmest
Warmest since:
 2012
Ties: 1942, 1970
Jan–Sep 2019
9-Month 		52.0°F
(11.1°C)		 51.7°F
(10.9°C)		 0.3°F
(0.2°C)		 71st Coolest
Coolest since:
 1904, 1912
58th Warmest
Warmest since:
 2012
Dec 2018–Sep 2019
10-Month 		49.9°F
(9.9°C)		 49.1°F
(9.5°C)		 0.8°F
(0.4°C)		 82nd Coolest
Coolest since:
 1904
46th Warmest
Warmest since:
 2012
Ties: 1898, 1949, 1952
Nov 2018–Sep 2019
11-Month 		48.4°F
(9.1°C)		 48.1°F
(8.9°C)		 0.3°F
(0.2°C)		 73rd Coolest
Coolest since:
 1904
55th Warmest
Warmest since:
 2012
Ties: 1897, 1930, 1968, 1986
Oct 2018–Sep 2019
12-Month 		48.6°F
(9.2°C)		 48.5°F
(9.2°C)		 0.1°F
(0.0°C)		 67th Coolest
Coolest since:
 1904
61st Warmest
Warmest since:
 2012
Ties: 1896, 1968, 1980, 1992, 2001
Apr 2018–Sep 2019
18-Month 		54.2°F
(12.3°C)		 53.6°F
(12.0°C)		 0.6°F
(0.3°C)		 81st Coolest
Coolest since:
 1904
47th Warmest
Warmest since:
 2012
Ties: 1897, 1949, 1956, 1986
Oct 2017–Sep 2019
24-Month 		49.1°F
(9.5°C)		 48.5°F
(9.2°C)		 0.6°F
(0.3°C)		 90th Coolest
Coolest since:
 1918
37th Warmest
Warmest since:
 2017
Ties: 1953, 1956, 1995, 2010
Oct 2016–Sep 2019
36-Month 		49.9°F
(9.9°C)		 48.4°F
(9.1°C)		 1.5°F
(0.8°C)		 108th Coolest
Coolest since:
 1979
18th Warmest
Warmest since:
 2000
Ties: 1921, 1932, 2021
Oct 2015–Sep 2019
48-Month 		50.6°F
(10.3°C)		 48.5°F
(9.2°C)		 2.1°F
(1.1°C)		 124th Coolest
Coolest since:
 1905, 1918
1st Warmest
Warmest since:
 2001, 2002, 2019
Ties: 2001, 2002
Oct 2014–Sep 2019
60-Month 		50.0°F
(10.0°C)		 48.4°F
(9.1°C)		 1.6°F
(0.9°C)		 117th Coolest
Coolest since:
 1905, 1906
7th Warmest
Warmest since:
 2002
Ties: 2001, 2007

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