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 2020

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 2020
1-Month
59.5°F
(15.3°C)
61.0°F
(16.1°C)
-1.5°F
(-0.8°C)
43rd Coolest
Coolest since:
1907
86th Warmest
Warmest since:
2018
Ties: 1994
Apr–May 2020
2-Month
53.8°F
(12.1°C)
55.5°F
(13.1°C)
-1.7°F
(-1.0°C)
26th Coolest
Coolest since:
1907
103rd Warmest
Warmest since:
1977
Ties: 1973
Mar–May 2020
3-Month
50.0°F
(10.0°C)
49.7°F
(9.8°C)
0.3°F
(0.2°C)
68th Coolest
Coolest since:
1960
61st Warmest
Warmest since:
2012
Ties: 1933, 1968
Feb–May 2020
4-Month
45.1°F
(7.3°C)
44.2°F
(6.8°C)
0.9°F
(0.5°C)
84th Coolest
Coolest since:
1978
45th Warmest
Warmest since:
2012
Ties: 1903, 2022
Jan–May 2020
5-Month
42.3°F
(5.7°C)
40.1°F
(4.5°C)
2.2°F
(1.2°C)
108th Coolest
Coolest since:
1978
21st Warmest
Warmest since:
2012
Ties: 1933, 1953, 1955, 1973, 1976, 2002
Dec 2019–May 2020
6-Month
40.9°F
(4.9°C)
38.1°F
(3.4°C)
2.8°F
(1.5°C)
113th Coolest
Coolest since:
1978
15th Warmest
Warmest since:
2012
Nov 2019–May 2020
7-Month
40.1°F
(4.5°C)
38.4°F
(3.6°C)
1.7°F
(0.9°C)
100th Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Oct 2019–May 2020
8-Month
41.8°F
(5.4°C)
40.3°F
(4.6°C)
1.5°F
(0.8°C)
101st Coolest
Coolest since:
1904
27th Warmest
Warmest since:
2012
Ties: 1949, 1972, 1974
Sep 2019–May 2020
9-Month
44.9°F
(7.2°C)
43.0°F
(6.1°C)
1.9°F
(1.1°C)
108th Coolest
Coolest since:
1904
20th Warmest
Warmest since:
2012
Ties: 1995
Aug 2019–May 2020
10-Month
47.6°F
(8.7°C)
45.9°F
(7.7°C)
1.7°F
(1.0°C)
107th Coolest
Coolest since:
1904
21st Warmest
Warmest since:
2012
Ties: 2005
Jul 2019–May 2020
11-Month
50.2°F
(10.1°C)
48.5°F
(9.2°C)
1.7°F
(0.9°C)
108th Coolest
Coolest since:
1904
20th Warmest
Warmest since:
2012
Jun 2019–May 2020
12-Month
51.9°F
(11.1°C)
50.3°F
(10.2°C)
1.6°F
(0.9°C)
109th Coolest
Coolest since:
1904
19th Warmest
Warmest since:
2012
Dec 2018–May 2020
18-Month
47.5°F
(8.6°C)
46.2°F
(7.9°C)
1.3°F
(0.7°C)
99th Coolest
Coolest since:
1905
28th Warmest
Warmest since:
2017
Ties: 1935, 1953, 2002
Jun 2018–May 2020
24-Month
51.5°F
(10.8°C)
50.3°F
(10.2°C)
1.2°F
(0.6°C)
104th Coolest
Coolest since:
1905
23rd Warmest
Warmest since:
2017
Ties: 1956, 2001, 2008
Jun 2017–May 2020
36-Month
51.4°F
(10.8°C)
50.3°F
(10.2°C)
1.1°F
(0.6°C)
98th Coolest
Coolest since:
1905, 1906
28th Warmest
Warmest since:
2018
Ties: 1935, 1957, 1988
Jun 2016–May 2020
48-Month
52.2°F
(11.2°C)
50.3°F
(10.2°C)
1.9°F
(1.0°C)
123rd Coolest
Coolest since:
1905
2nd Warmest
Warmest since:
2019
Ties: 2018
Jun 2015–May 2020
60-Month
52.5°F
(11.4°C)
50.3°F
(10.2°C)
2.2°F
(1.2°C)
123rd Coolest
Coolest since:
1905, 1906, 1908
1st Warmest
Warmest to Date
2020

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