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 2021

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
May 2021
1-Month
60.1°F
(15.6°C)
61.0°F
(16.1°C)
-0.9°F
(-0.5°C)
48th Coolest
Coolest since:
1907
81st Warmest
Warmest since:
2018
Ties: 1904
Apr–May 2021
2-Month
55.8°F
(13.2°C)
55.4°F
(13.0°C)
0.4°F
(0.2°C)
64th Coolest
Coolest since:
1907
65th Warmest
Warmest since:
1977
Ties: 1972
Mar–May 2021
3-Month
52.1°F
(11.2°C)
49.7°F
(9.8°C)
2.4°F
(1.4°C)
108th Coolest
Coolest since:
1960
21st Warmest
Warmest since:
2012
Ties: 2006
Feb–May 2021
4-Month
43.9°F
(6.6°C)
44.2°F
(6.8°C)
-0.3°F
(-0.2°C)
54th Coolest
Coolest since:
1978
75th Warmest
Warmest since:
2012
Ties: 1961
Jan–May 2021
5-Month
40.8°F
(4.9°C)
40.1°F
(4.5°C)
0.7°F
(0.4°C)
79th Coolest
Coolest since:
1978
50th Warmest
Warmest since:
2012
Ties: 1908, 1956, 1985
Dec 2020–May 2021
6-Month
39.4°F
(4.1°C)
38.1°F
(3.4°C)
1.3°F
(0.7°C)
89th Coolest
Coolest since:
1978
39th Warmest
Warmest since:
2012
Ties: 1931, 2010
Nov 2020–May 2021
7-Month
40.3°F
(4.6°C)
38.3°F
(3.5°C)
2.0°F
(1.1°C)
104th Coolest
Coolest since:
1904
24th Warmest
Warmest since:
2012
Ties: 1919, 1955, 2010
Oct 2020–May 2021
8-Month
41.7°F
(5.4°C)
40.3°F
(4.6°C)
1.4°F
(0.8°C)
97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Sep 2020–May 2021
9-Month
44.2°F
(6.8°C)
42.9°F
(6.1°C)
1.3°F
(0.7°C)
97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Ties: 2018
Aug 2020–May 2021
10-Month
47.0°F
(8.3°C)
45.9°F
(7.7°C)
1.1°F
(0.6°C)
96th Coolest
Coolest since:
1904
32nd Warmest
Warmest since:
2012
Ties: 1919
Jul 2020–May 2021
11-Month
49.6°F
(9.8°C)
48.5°F
(9.2°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Ties: 1931, 1937, 1985, 1995
Jun 2020–May 2021
12-Month
51.6°F
(10.9°C)
50.3°F
(10.2°C)
1.3°F
(0.7°C)
100th Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Ties: 1935, 1949, 1972, 1995, 2013
Dec 2019–May 2021
18-Month
48.0°F
(8.9°C)
46.2°F
(7.9°C)
1.8°F
(1.0°C)
108th Coolest
Coolest since:
1905
19th Warmest
Warmest since:
2017
Ties: 1942, 2005
Jun 2019–May 2021
24-Month
51.7°F
(10.9°C)
50.3°F
(10.2°C)
1.4°F
(0.7°C)
110th Coolest
Coolest since:
1905
17th Warmest
Warmest since:
2017
Ties: 1935, 1942, 1991
Jun 2018–May 2021
36-Month
51.5°F
(10.8°C)
50.3°F
(10.2°C)
1.2°F
(0.6°C)
102nd Coolest
Coolest since:
1905, 1906
24th Warmest
Warmest since:
2018
Ties: 1987, 1991, 1993
Jun 2017–May 2021
48-Month
51.4°F
(10.8°C)
50.2°F
(10.1°C)
1.2°F
(0.7°C)
98th Coolest
Coolest since:
1905
27th Warmest
Warmest since:
2019
Ties: 1990
Jun 2016–May 2021
60-Month
52.1°F
(11.2°C)
50.3°F
(10.2°C)
1.8°F
(1.0°C)
121st Coolest
Coolest since:
1905, 1906, 1908
3rd Warmest
Warmest since:
2020

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