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 5. East

Average Temperature Rankings, May 2015

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 2015
1-Month
64.9°F
(18.3°C)
61.0°F
(16.1°C)
3.9°F
(2.2°C)
110th Coolest
Coolest since:
1907
19th Warmest
Warmest since:
2018
Apr–May 2015
2-Month
58.8°F
(14.9°C)
55.4°F
(13.0°C)
3.4°F
(1.9°C)
116th Coolest
Coolest since:
1907
13th Warmest
Warmest since:
1977
Ties: 1964, 1986
Mar–May 2015
3-Month
51.2°F
(10.7°C)
49.7°F
(9.8°C)
1.5°F
(0.9°C)
92nd Coolest
Coolest since:
1960
37th Warmest
Warmest since:
2012
Ties: 1959, 1999, 2003
Feb–May 2015
4-Month
42.8°F
(6.0°C)
44.1°F
(6.7°C)
-1.3°F
(-0.7°C)
33rd Coolest
Coolest since:
1978
96th Warmest
Warmest since:
2012
Ties: 1937, 1966, 1967, 1982
Jan–May 2015
5-Month
38.9°F
(3.8°C)
40.1°F
(4.5°C)
-1.2°F
(-0.7°C)
33rd Coolest
Coolest since:
1978
96th Warmest
Warmest since:
2012
Ties: 1907
Dec 2014–May 2015
6-Month
37.9°F
(3.3°C)
38.1°F
(3.4°C)
-0.2°F
(-0.1°C)
50th Coolest
Coolest since:
1978
78th Warmest
Warmest since:
2012
Ties: 1906, 1935, 1945, 1958, 2001
Nov 2014–May 2015
7-Month
37.3°F
(2.9°C)
38.3°F
(3.5°C)
-1.0°F
(-0.6°C)
26th Coolest
Coolest since:
1904
102nd Warmest
Warmest since:
2012
Ties: 1900, 1968
Oct 2014–May 2015
8-Month
39.3°F
(4.1°C)
40.2°F
(4.6°C)
-0.9°F
(-0.5°C)
31st Coolest
Coolest since:
1904
97th Warmest
Warmest since:
2012
Sep 2014–May 2015
9-Month
42.0°F
(5.6°C)
43.0°F
(6.1°C)
-1.0°F
(-0.5°C)
30th Coolest
Coolest since:
1904
98th Warmest
Warmest since:
2012
Aug 2014–May 2015
10-Month
45.0°F
(7.2°C)
45.8°F
(7.7°C)
-0.8°F
(-0.5°C)
29th Coolest
Coolest since:
1904
99th Warmest
Warmest since:
2012
Ties: 1960
Jul 2014–May 2015
11-Month
47.2°F
(8.4°C)
48.5°F
(9.2°C)
-1.3°F
(-0.8°C)
19th Coolest
Coolest since:
1904
109th Warmest
Warmest since:
2012
Ties: 1970
Jun 2014–May 2015
12-Month
49.3°F
(9.6°C)
50.3°F
(10.2°C)
-1.0°F
(-0.6°C)
22nd Coolest
Coolest since:
1904
106th Warmest
Warmest since:
2012
Ties: 1908, 1910, 1997
Dec 2013–May 2015
18-Month
44.3°F
(6.8°C)
46.2°F
(7.9°C)
-1.9°F
(-1.1°C)
6th Coolest
Coolest since:
1905
121st Warmest
Warmest since:
2017
Ties: 1980
Jun 2013–May 2015
24-Month
48.8°F
(9.3°C)
50.3°F
(10.2°C)
-1.5°F
(-0.9°C)
6th Coolest
Coolest since:
1905
121st Warmest
Warmest since:
2017
Jun 2012–May 2015
36-Month
49.7°F
(9.8°C)
50.2°F
(10.1°C)
-0.5°F
(-0.3°C)
27th Coolest
Coolest since:
1905, 1906
99th Warmest
Warmest since:
2018
Ties: 1910, 1914, 1928, 1952, 1961, 1981
Jun 2011–May 2015
48-Month
51.1°F
(10.6°C)
50.3°F
(10.2°C)
0.8°F
(0.4°C)
89th Coolest
Coolest since:
1905
36th Warmest
Warmest since:
2019
Ties: 1923, 1987, 1999
Jun 2010–May 2015
60-Month
51.1°F
(10.6°C)
50.3°F
(10.2°C)
0.8°F
(0.4°C)
90th Coolest
Coolest since:
1905, 1906, 1908
34th Warmest
Warmest since:
2020
Ties: 1923, 1933, 1942, 1987, 1988, 1995

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