Climate at a Glance

Divisional 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 February 2021. For more information, please see Climatological Rankings.


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, May 2018

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
May 2018
1-Month
73.1°F
(22.8°C)
65.1°F
(18.4°C)
8.0°F
(4.4°C)
126th Coolest Coolest since: 2017 1917, 1924
1st Warmest Warmest to Date 2018
Apr–May 2018
2-Month
61.4°F
(16.3°C)
60.2°F
(15.7°C)
1.2°F
(0.6°C)
89th Coolest Coolest since: 2016 1907
38th Warmest Warmest since: 2017 1896
Ties: 1938, 1948, 1974
Mar–May 2018
3-Month
55.5°F
(13.1°C)
55.0°F
(12.8°C)
0.5°F
(0.3°C)
71st Coolest Coolest since: 2014 1960
56th Warmest Warmest since: 2017 2012
Ties: 1953, 1957, 2019, 2020
Feb–May 2018
4-Month
51.4°F
(10.8°C)
50.0°F
(10.0°C)
1.4°F
(0.8°C)
89th Coolest Coolest since: 2015 1978
38th Warmest Warmest since: 2017 2012
Ties: 1908, 1990
Jan–May 2018
5-Month
46.7°F
(8.2°C)
46.1°F
(7.8°C)
0.6°F
(0.4°C)
71st Coolest Coolest since: 2015 1978
56th Warmest Warmest since: 2017 2012
Ties: 1903
Dec 2017–May 2018
6-Month
44.8°F
(7.1°C)
44.3°F
(6.8°C)
0.5°F
(0.3°C)
73rd Coolest Coolest since: 2015 1978
53rd Warmest Warmest since: 2017 2012
Ties: 1909, 1983, 1985
Nov 2017–May 2018
7-Month
45.0°F
(7.2°C)
44.3°F
(6.8°C)
0.7°F
(0.4°C)
80th Coolest Coolest since: 2015 1978
46th Warmest Warmest since: 2017 2012
Ties: 1941, 1983, 1988, 1990, 2019
Oct 2017–May 2018
8-Month
47.0°F
(8.3°C)
46.0°F
(7.8°C)
1.0°F
(0.5°C)
90th Coolest Coolest since: 2015 1978
36th Warmest Warmest since: 2017 2012
Ties: 1903, 1922, 1964
Sep 2017–May 2018
9-Month
49.6°F
(9.8°C)
48.5°F
(9.2°C)
1.1°F
(0.6°C)
94th Coolest Coolest since: 2015 1978
32nd Warmest Warmest since: 2017 2012
Ties: 1925, 1938, 1941, 2019
Aug 2017–May 2018
10-Month
52.0°F
(11.1°C)
51.3°F
(10.7°C)
0.7°F
(0.4°C)
84th Coolest Coolest since: 2015 1978
42nd Warmest Warmest since: 2017 2012
Ties: 1909, 1937, 1953, 2011
Jul 2017–May 2018
11-Month
54.5°F
(12.5°C)
53.7°F
(12.1°C)
0.8°F
(0.4°C)
86th Coolest Coolest since: 2015 1918
40th Warmest Warmest since: 2017 2012
Ties: 1919, 1941
Jun 2017–May 2018
12-Month
56.2°F
(13.4°C)
55.4°F
(13.0°C)
0.8°F
(0.4°C)
87th Coolest Coolest since: 2015 1904, 1918
39th Warmest Warmest since: 2017 2012
Ties: 1919, 1995
Dec 2016–May 2018
18-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
114th Coolest Coolest since: 2016 1979
11th Warmest Warmest since: 2017 2017
Ties: 1939, 1992
Jun 2016–May 2018
24-Month
57.8°F
(14.3°C)
55.4°F
(13.0°C)
2.4°F
(1.3°C)
121st Coolest Coolest since: 2016 1905, 1978
4th Warmest Warmest since: 2017 2017
Ties: 2000
Jun 2015–May 2018
36-Month
58.0°F
(14.4°C)
55.4°F
(13.0°C)
2.6°F
(1.4°C)
123rd Coolest Coolest since: 2017 1979
1st Warmest Warmest to Date 2018
Jun 2014–May 2018
48-Month
57.1°F
(13.9°C)
55.3°F
(12.9°C)
1.8°F
(1.0°C)
119th Coolest Coolest since: 2017 1980
4th Warmest Warmest since: 1935 2019
Jun 2013–May 2018
60-Month
56.5°F
(13.6°C)
55.4°F
(13.0°C)
1.1°F
(0.6°C)
106th Coolest Coolest since: 2017 1979, 1980, 1981
16th Warmest Warmest since: 2017 2020
Ties: 1956, 2017

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published March 2021, retrieved on March 9, 2021 from https://www.ncdc.noaa.gov/cag/