Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of June 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, May 2020

View Period (Months):All1234567891011121824364860
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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
(1895-2020)
Warmest/Coolest
Since
Record
May 2020
1-Month
60.5°F
(15.8°C)
62.1°F
(16.7°C)
-1.6°F
(-0.9°C)
39th Coolest Coolest since: 2008 1917
88th Warmest Warmest since: 2019 2018
Apr–May 2020
2-Month
55.0°F
(12.8°C)
56.8°F
(13.8°C)
-1.8°F
(-1.0°C)
24th Coolest Coolest since: 1997 1907
103rd Warmest Warmest since: 2019 1896
Mar–May 2020
3-Month
51.5°F
(10.8°C)
51.1°F
(10.6°C)
0.4°F
(0.2°C)
67th Coolest Coolest since: 2019 1960
60th Warmest Warmest since: 2018 2012
Ties: 1949, 1967, 1990
Feb–May 2020
4-Month
46.6°F
(8.1°C)
45.7°F
(7.6°C)
0.9°F
(0.5°C)
83rd Coolest Coolest since: 2019 1978
44th Warmest Warmest since: 2018 2012
Ties: 1903, 1915, 2018
Jan–May 2020
5-Month
43.6°F
(6.4°C)
41.6°F
(5.3°C)
2.0°F
(1.1°C)
101st Coolest Coolest since: 2019 1978, 1979
26th Warmest Warmest since: 2017 2012
Ties: 1955, 2007
Dec 2019–May 2020
6-Month
42.3°F
(5.7°C)
39.6°F
(4.2°C)
2.7°F
(1.5°C)
112th Coolest Coolest since: 2019 1978
14th Warmest Warmest since: 2017 2012
Ties: 2004
Nov 2019–May 2020
7-Month
41.4°F
(5.2°C)
39.7°F
(4.3°C)
1.7°F
(0.9°C)
101st Coolest Coolest since: 2019 1904
25th Warmest Warmest since: 2017 2012
Ties: 1938, 1939, 1946, 1983
Oct 2019–May 2020
8-Month
43.0°F
(6.1°C)
41.7°F
(5.4°C)
1.3°F
(0.7°C)
99th Coolest Coolest since: 2019 1904, 1978
27th Warmest Warmest since: 2017 2012
Ties: 1957, 1964
Sep 2019–May 2020
9-Month
46.1°F
(7.8°C)
44.3°F
(6.8°C)
1.8°F
(1.0°C)
106th Coolest Coolest since: 2019 1904
20th Warmest Warmest since: 2017 2012
Ties: 1976
Aug 2019–May 2020
10-Month
48.8°F
(9.3°C)
47.3°F
(8.5°C)
1.5°F
(0.8°C)
105th Coolest Coolest since: 2019 1904
21st Warmest Warmest since: 2017 2012
Ties: 1974
Jul 2019–May 2020
11-Month
51.4°F
(10.8°C)
49.8°F
(9.9°C)
1.6°F
(0.9°C)
107th Coolest Coolest since: 2019 1904
19th Warmest Warmest since: 2017 2012
Ties: 1922
Jun 2019–May 2020
12-Month
53.0°F
(11.7°C)
51.6°F
(10.9°C)
1.4°F
(0.8°C)
105th Coolest Coolest since: 2019 1904
21st Warmest Warmest since: 2017 2012
Ties: 1914, 1974, 1976, 2007
Dec 2018–May 2020
18-Month
48.8°F
(9.3°C)
47.6°F
(8.7°C)
1.2°F
(0.6°C)
99th Coolest Coolest since: 2019 1979
26th Warmest Warmest since: 2018 2017
Ties: 1974
Jun 2018–May 2020
24-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
100th Coolest Coolest since: 2019 1905
25th Warmest Warmest since: 2018 2017
Ties: 1923, 1938, 1987, 2016
Jun 2017–May 2020
36-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
95th Coolest Coolest since: 2016 1979
29th Warmest Warmest since: 2019 2018
Ties: 1954, 1987, 1988
Jun 2016–May 2020
48-Month
53.3°F
(11.8°C)
51.6°F
(10.9°C)
1.7°F
(0.9°C)
120th Coolest Coolest since: 2018 1980
3rd Warmest Warmest since: 2019 2019
Ties: 2002, 2007, 2018
Jun 2015–May 2020
60-Month
53.6°F
(12.0°C)
51.6°F
(10.9°C)
2.0°F
(1.1°C)
121st Coolest Coolest since: 2019 1906, 1907, 1908, 1981
1st Warmest Warmest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published July 2020, retrieved on August 4, 2020 from https://www.ncdc.noaa.gov/cag/