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 2015

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 2015
1-Month
68.6°F
(20.3°C)
63.7°F
(17.6°C)
4.9°F
(2.7°C)
122nd Coolest
Coolest since:
1918
7th Warmest
Warmest since:
1897
Aug–Sep 2015
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: 2019
Jul–Sep 2015
3-Month
70.1°F
(21.2°C)
69.4°F
(20.8°C)
0.7°F
(0.4°C)
81st Coolest
Coolest since:
1924
48th Warmest
Warmest since:
1936
Ties: 1922, 1953, 1970, 2022
Jun–Sep 2015
4-Month
69.5°F
(20.8°C)
69.2°F
(20.7°C)
0.3°F
(0.1°C)
68th Coolest
Coolest since:
1915
61st Warmest
Warmest since:
2005
Ties: 1937, 1968
May–Sep 2015
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, 1978
Apr–Sep 2015
6-Month
65.0°F
(18.3°C)
63.9°F
(17.7°C)
1.1°F
(0.6°C)
92nd Coolest
Coolest since:
1907
37th Warmest
Warmest since:
1921
Ties: 1906, 1919, 1930, 1970
Mar–Sep 2015
7-Month
60.5°F
(15.8°C)
59.9°F
(15.5°C)
0.6°F
(0.3°C)
77th Coolest
Coolest since:
1924
52nd Warmest
Warmest since:
2012
Ties: 1908, 1953, 1963, 1990
Feb–Sep 2015
8-Month
54.8°F
(12.7°C)
55.5°F
(13.1°C)
-0.7°F
(-0.4°C)
35th Coolest
Coolest since:
1904, 1917
94th Warmest
Warmest since:
2012
Ties: 1903, 1914, 1937, 1943, 1992
Jan–Sep 2015
9-Month
51.0°F
(10.6°C)
51.7°F
(10.9°C)
-0.7°F
(-0.3°C)
38th Coolest
Coolest since:
1904, 1912
91st Warmest
Warmest since:
2012
Ties: 1943, 1969
Dec 2014–Sep 2015
10-Month
49.1°F
(9.5°C)
49.2°F
(9.6°C)
-0.1°F
(-0.1°C)
62nd Coolest
Coolest since:
1904
66th Warmest
Warmest since:
2012
Ties: 1975
Nov 2014–Sep 2015
11-Month
47.6°F
(8.7°C)
48.2°F
(9.0°C)
-0.6°F
(-0.3°C)
39th Coolest
Coolest since:
1904
89th Warmest
Warmest since:
2012
Ties: 1923, 1928, 1956, 1969, 1994
Oct 2014–Sep 2015
12-Month
47.9°F
(8.8°C)
48.5°F
(9.2°C)
-0.6°F
(-0.4°C)
38th Coolest
Coolest since:
1904
90th Warmest
Warmest since:
2012
Apr 2014–Sep 2015
18-Month
53.1°F
(11.7°C)
53.6°F
(12.0°C)
-0.5°F
(-0.3°C)
37th Coolest
Coolest since:
1904
91st Warmest
Warmest since:
2012
Ties: 1907, 1915, 1925, 1943, 1946
Oct 2013–Sep 2015
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: 1978
Oct 2012–Sep 2015
36-Month
47.6°F
(8.7°C)
48.5°F
(9.2°C)
-0.9°F
(-0.5°C)
13th Coolest
Coolest since:
1979
113th Warmest
Warmest since:
2000
Ties: 1920, 1927
Oct 2011–Sep 2015
48-Month
49.1°F
(9.5°C)
48.4°F
(9.1°C)
0.7°F
(0.4°C)
84th Coolest
Coolest since:
1905, 1918
41st Warmest
Warmest since:
2001, 2002, 2019
Ties: 1941, 1976, 1998
Oct 2010–Sep 2015
60-Month
49.0°F
(9.4°C)
48.4°F
(9.1°C)
0.6°F
(0.3°C)
82nd Coolest
Coolest since:
1905, 1906
42nd Warmest
Warmest since:
2002
Ties: 1922, 1955, 1958, 1976, 1994

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