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 2018

View Period (Months):
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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 2018
1-Month
70.1°F
(21.2°C)
61.0°F
(16.1°C)
9.1°F
(5.1°C)
128th Coolest
Coolest since:
1907
1st Warmest
Warmest to Date
2018
Apr–May 2018
2-Month
56.8°F
(13.8°C)
55.5°F
(13.1°C)
1.3°F
(0.7°C)
92nd Coolest
Coolest since:
1907
37th Warmest
Warmest since:
1977
Ties: 1899, 1912, 1914
Mar–May 2018
3-Month
50.2°F
(10.1°C)
49.7°F
(9.8°C)
0.5°F
(0.3°C)
73rd Coolest
Coolest since:
1960
56th Warmest
Warmest since:
2012
Ties: 1927, 1992, 1994
Feb–May 2018
4-Month
45.3°F
(7.4°C)
44.2°F
(6.8°C)
1.1°F
(0.6°C)
89th Coolest
Coolest since:
1978
40th Warmest
Warmest since:
2012
Jan–May 2018
5-Month
40.6°F
(4.8°C)
40.1°F
(4.5°C)
0.5°F
(0.3°C)
74th Coolest
Coolest since:
1978
55th Warmest
Warmest since:
2012
Ties: 1903, 1934, 1995, 2009, 2013
Dec 2017–May 2018
6-Month
38.6°F
(3.7°C)
38.2°F
(3.4°C)
0.4°F
(0.3°C)
71st Coolest
Coolest since:
1978
57th Warmest
Warmest since:
2012
Ties: 1950, 1989
Nov 2017–May 2018
7-Month
38.9°F
(3.8°C)
38.4°F
(3.6°C)
0.5°F
(0.2°C)
77th Coolest
Coolest since:
1904
51st Warmest
Warmest since:
2012
Ties: 1933, 1957
Oct 2017–May 2018
8-Month
41.2°F
(5.1°C)
40.2°F
(4.6°C)
1.0°F
(0.5°C)
88th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Ties: 1946, 1950, 1986
Sep 2017–May 2018
9-Month
44.2°F
(6.8°C)
43.0°F
(6.1°C)
1.2°F
(0.7°C)
96th Coolest
Coolest since:
1904
32nd Warmest
Warmest since:
2012
Aug 2017–May 2018
10-Month
46.7°F
(8.2°C)
45.9°F
(7.7°C)
0.8°F
(0.5°C)
87th Coolest
Coolest since:
1904
41st Warmest
Warmest since:
2012
Ties: 2010, 2013
Jul 2017–May 2018
11-Month
49.3°F
(9.6°C)
48.5°F
(9.2°C)
0.8°F
(0.4°C)
88th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Ties: 1919, 1935, 1989, 2008
Jun 2017–May 2018
12-Month
51.2°F
(10.7°C)
50.3°F
(10.2°C)
0.9°F
(0.5°C)
88th Coolest
Coolest since:
1904
40th Warmest
Warmest since:
2012
Ties: 1957, 1988, 2008, 2011
Dec 2016–May 2018
18-Month
48.4°F
(9.1°C)
46.2°F
(7.9°C)
2.2°F
(1.2°C)
115th Coolest
Coolest since:
1905
12th Warmest
Warmest since:
2017
Jun 2016–May 2018
24-Month
52.9°F
(11.6°C)
50.3°F
(10.2°C)
2.6°F
(1.4°C)
123rd Coolest
Coolest since:
1905
4th Warmest
Warmest since:
2017
Ties: 2000
Jun 2015–May 2018
36-Month
53.1°F
(11.7°C)
50.3°F
(10.2°C)
2.8°F
(1.5°C)
125th Coolest
Coolest since:
1905, 1906
1st Warmest
Warmest to Date
2018
Jun 2014–May 2018
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 to Date
2019
Ties: 2020
Jun 2013–May 2018
60-Month
51.4°F
(10.8°C)
50.3°F
(10.2°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1905, 1906, 1908
24th Warmest
Warmest since:
2020
Ties: 1956, 1989

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