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 2018

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2018
1-Month
67.5°F
(19.7°C)
63.7°F
(17.6°C)
3.8°F
(2.1°C)
114th Coolest
Coolest since:
1918
15th Warmest
Warmest since:
1897
Aug–Sep 2018
2-Month
70.5°F
(21.4°C)
67.4°F
(19.7°C)
3.1°F
(1.7°C)
117th Coolest
Coolest since:
1902
12th Warmest
Warmest since:
1947
Jul–Sep 2018
3-Month
71.4°F
(21.9°C)
69.3°F
(20.7°C)
2.1°F
(1.2°C)
110th Coolest
Coolest since:
1924
19th Warmest
Warmest since:
1936
Jun–Sep 2018
4-Month
71.3°F
(21.8°C)
69.2°F
(20.7°C)
2.1°F
(1.1°C)
112th Coolest
Coolest since:
1915
17th Warmest
Warmest since:
2005
May–Sep 2018
5-Month
70.3°F
(21.3°C)
67.2°F
(19.6°C)
3.1°F
(1.7°C)
126th Coolest
Coolest since:
1924
3rd Warmest
Warmest since:
1921, 1988
Apr–Sep 2018
6-Month
65.3°F
(18.5°C)
63.9°F
(17.7°C)
1.4°F
(0.8°C)
101st Coolest
Coolest since:
1907
28th Warmest
Warmest since:
1921
Mar–Sep 2018
7-Month
61.1°F
(16.2°C)
59.9°F
(15.5°C)
1.2°F
(0.7°C)
99th Coolest
Coolest since:
1924
30th Warmest
Warmest since:
2012
Ties: 1919, 1939, 1941, 1995, 2017
Feb–Sep 2018
8-Month
56.7°F
(13.7°C)
55.5°F
(13.1°C)
1.2°F
(0.6°C)
97th Coolest
Coolest since:
1904, 1917
32nd Warmest
Warmest since:
2012
Ties: 1946, 1953, 1990, 1995, 2007
Jan–Sep 2018
9-Month
52.8°F
(11.6°C)
51.7°F
(10.9°C)
1.1°F
(0.7°C)
87th Coolest
Coolest since:
1904, 1912
42nd Warmest
Warmest since:
2012
Ties: 1941, 2001
Dec 2017–Sep 2018
10-Month
50.1°F
(10.1°C)
49.1°F
(9.5°C)
1.0°F
(0.6°C)
88th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Nov 2017–Sep 2018
11-Month
49.0°F
(9.4°C)
48.1°F
(8.9°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1904
39th Warmest
Warmest since:
2012
Ties: 1896, 2013
Oct 2017–Sep 2018
12-Month
49.6°F
(9.8°C)
48.5°F
(9.2°C)
1.1°F
(0.6°C)
97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Ties: 1933, 1941, 1953
Apr 2017–Sep 2018
18-Month
54.7°F
(12.6°C)
53.6°F
(12.0°C)
1.1°F
(0.6°C)
97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Ties: 1919, 1953, 2010
Oct 2016–Sep 2018
24-Month
50.6°F
(10.3°C)
48.5°F
(9.2°C)
2.1°F
(1.1°C)
119th Coolest
Coolest since:
1918
8th Warmest
Warmest since:
2017
Ties: 1988
Oct 2015–Sep 2018
36-Month
51.2°F
(10.7°C)
48.4°F
(9.1°C)
2.8°F
(1.6°C)
124th Coolest
Coolest since:
1979
2nd Warmest
Warmest since:
2000
Oct 2014–Sep 2018
48-Month
50.4°F
(10.2°C)
48.4°F
(9.1°C)
2.0°F
(1.1°C)
119th Coolest
Coolest since:
1905, 1918
6th Warmest
Warmest since:
2001, 2002, 2019
Oct 2013–Sep 2018
60-Month
49.4°F
(9.7°C)
48.4°F
(9.1°C)
1.0°F
(0.6°C)
96th Coolest
Coolest since:
1905, 1906
28th Warmest
Warmest since:
2002
Ties: 1956, 1988, 1989, 1992

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