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 2017

View Period (Months):
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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2017
1-Month
67.1°F
(19.5°C)
63.7°F
(17.6°C)
3.4°F
(1.9°C)
108th Coolest
Coolest since:
1918
21st Warmest
Warmest since:
1897
Ties: 1921, 2007
Aug–Sep 2017
2-Month
67.9°F
(19.9°C)
67.4°F
(19.7°C)
0.5°F
(0.2°C)
71st Coolest
Coolest since:
1902
58th Warmest
Warmest since:
1947
Ties: 1968, 2008
Jul–Sep 2017
3-Month
69.5°F
(20.8°C)
69.3°F
(20.7°C)
0.2°F
(0.1°C)
60th Coolest
Coolest since:
1924
69th Warmest
Warmest since:
1936
Ties: 1952, 1969, 2008, 2013
Jun–Sep 2017
4-Month
69.8°F
(21.0°C)
69.2°F
(20.7°C)
0.6°F
(0.3°C)
78th Coolest
Coolest since:
1915
51st Warmest
Warmest since:
2005
Ties: 1943
May–Sep 2017
5-Month
67.3°F
(19.6°C)
67.1°F
(19.5°C)
0.2°F
(0.1°C)
61st Coolest
Coolest since:
1924
68th Warmest
Warmest since:
1921, 1988
Ties: 1916, 1938
Apr–Sep 2017
6-Month
64.8°F
(18.2°C)
63.8°F
(17.7°C)
1.0°F
(0.5°C)
84th Coolest
Coolest since:
1907
45th Warmest
Warmest since:
1921
Ties: 1952, 1995, 2020, 2022
Mar–Sep 2017
7-Month
61.1°F
(16.2°C)
59.9°F
(15.5°C)
1.2°F
(0.7°C)
100th Coolest
Coolest since:
1924
29th Warmest
Warmest since:
2012
Ties: 1919, 1939, 1941, 1995, 2018, 2022
Feb–Sep 2017
8-Month
58.0°F
(14.4°C)
55.5°F
(13.1°C)
2.5°F
(1.3°C)
120th Coolest
Coolest since:
1904, 1917
9th Warmest
Warmest since:
2012
Ties: 1977
Jan–Sep 2017
9-Month
54.7°F
(12.6°C)
51.7°F
(10.9°C)
3.0°F
(1.7°C)
123rd Coolest
Coolest since:
1904, 1912
6th Warmest
Warmest since:
2012
Ties: 1991, 2005
Dec 2016–Sep 2017
10-Month
51.7°F
(10.9°C)
49.2°F
(9.6°C)
2.5°F
(1.3°C)
117th Coolest
Coolest since:
1904
11th Warmest
Warmest since:
2012
Nov 2016–Sep 2017
11-Month
51.2°F
(10.7°C)
48.2°F
(9.0°C)
3.0°F
(1.7°C)
121st Coolest
Coolest since:
1904
7th Warmest
Warmest since:
2012
Ties: 2005
Oct 2016–Sep 2017
12-Month
51.6°F
(10.9°C)
48.5°F
(9.2°C)
3.1°F
(1.7°C)
122nd Coolest
Coolest since:
1904
6th Warmest
Warmest since:
2012
Apr 2016–Sep 2017
18-Month
56.4°F
(13.6°C)
53.6°F
(12.0°C)
2.8°F
(1.6°C)
125th Coolest
Coolest since:
1904
3rd Warmest
Warmest since:
2012
Oct 2015–Sep 2017
24-Month
52.0°F
(11.1°C)
48.4°F
(9.1°C)
3.6°F
(2.0°C)
126th Coolest
Coolest since:
1918
1st Warmest
Warmest to Date
2017
Oct 2014–Sep 2017
36-Month
50.6°F
(10.3°C)
48.4°F
(9.1°C)
2.2°F
(1.2°C)
121st Coolest
Coolest since:
1979
5th Warmest
Warmest since:
2000
Ties: 2006
Oct 2013–Sep 2017
48-Month
49.4°F
(9.7°C)
48.4°F
(9.1°C)
1.0°F
(0.6°C)
98th Coolest
Coolest since:
1905, 1918
27th Warmest
Warmest since:
2001, 2002, 2019
Ties: 1957
Oct 2012–Sep 2017
60-Month
49.3°F
(9.6°C)
48.4°F
(9.1°C)
0.9°F
(0.5°C)
91st Coolest
Coolest since:
1905, 1906
33rd Warmest
Warmest since:
2002
Ties: 1925, 1933, 1995

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