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 July 2020. For more information, please see Climatological Rankings.


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, April 2018

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
April 2018
1-Month
49.6°F
(9.8°C)
55.3°F
(12.9°C)
-5.7°F
(-3.1°C)
4th Coolest Coolest since: 1983 1907
123rd Warmest Warmest since: 2017 1896
Mar–Apr 2018
2-Month
46.8°F
(8.2°C)
50.0°F
(10.0°C)
-3.2°F
(-1.8°C)
12th Coolest Coolest since: 2013 1926, 1960
115th Warmest Warmest since: 2017 2012
Ties: 1904, 1980, 2013
Feb–Apr 2018
3-Month
44.1°F
(6.7°C)
44.9°F
(7.2°C)
-0.8°F
(-0.5°C)
49th Coolest Coolest since: 2015 1899
78th Warmest Warmest since: 2017 2012
Ties: 1933, 1966
Jan–Apr 2018
4-Month
40.2°F
(4.6°C)
41.5°F
(5.3°C)
-1.3°F
(-0.7°C)
35th Coolest Coolest since: 2015 1978
92nd Warmest Warmest since: 2017 2012
Ties: 1926, 1937, 1951, 1985
Dec 2017–Apr 2018
5-Month
39.1°F
(3.9°C)
40.1°F
(4.5°C)
-1.0°F
(-0.6°C)
34th Coolest Coolest since: 2014 1978
92nd Warmest Warmest since: 2017 2012
Ties: 1928, 1959
Nov 2017–Apr 2018
6-Month
40.4°F
(4.7°C)
40.9°F
(4.9°C)
-0.5°F
(-0.2°C)
40th Coolest Coolest since: 2015 1912
86th Warmest Warmest since: 2017 2012
Ties: 1944, 1964, 1997, 2003
Oct 2017–Apr 2018
7-Month
43.3°F
(6.3°C)
43.3°F
(6.3°C)
0.0°F
(0.0°C)
54th Coolest Coolest since: 2015 1899, 1978
72nd Warmest Warmest since: 2017 2012
Ties: 1929, 1989
Sep 2017–Apr 2018
8-Month
46.7°F
(8.2°C)
46.5°F
(8.1°C)
0.2°F
(0.1°C)
63rd Coolest Coolest since: 2015 1918
63rd Warmest Warmest since: 2017 2017
Ties: 1903, 1908, 1911, 1985
Aug 2017–Apr 2018
9-Month
49.7°F
(9.8°C)
49.8°F
(9.9°C)
-0.1°F
(-0.1°C)
52nd Coolest Coolest since: 2015 1918
74th Warmest Warmest since: 2017 2017
Ties: 1911, 1928, 1933, 1956, 1961, 2003
Jul 2017–Apr 2018
10-Month
52.6°F
(11.4°C)
52.5°F
(11.4°C)
0.1°F
(0.0°C)
55th Coolest Coolest since: 2015 1918
71st Warmest Warmest since: 2017 2012
Ties: 1903, 1985, 1988, 2009
Jun 2017–Apr 2018
11-Month
54.6°F
(12.6°C)
54.5°F
(12.5°C)
0.1°F
(0.1°C)
60th Coolest Coolest since: 2015 1918
66th Warmest Warmest since: 2017 2012, 2017
Ties: 1907
May 2017–Apr 2018
12-Month
55.6°F
(13.1°C)
55.4°F
(13.0°C)
0.2°F
(0.1°C)
70th Coolest Coolest since: 2015 1918
56th Warmest Warmest since: 2017 2012, 2017
Ties: 1907, 1941, 1948, 1967, 1983, 2003
Nov 2016–Apr 2018
18-Month
52.4°F
(11.3°C)
50.5°F
(10.3°C)
1.9°F
(1.0°C)
112th Coolest Coolest since: 2016 1979
13th Warmest Warmest since: 2017 2017
Ties: 2008
May 2016–Apr 2018
24-Month
57.4°F
(14.1°C)
55.3°F
(12.9°C)
2.1°F
(1.2°C)
118th Coolest Coolest since: 2016 1978
7th Warmest Warmest since: 2017 2017
May 2015–Apr 2018
36-Month
57.8°F
(14.3°C)
55.4°F
(13.0°C)
2.4°F
(1.3°C)
123rd Coolest Coolest since: 2017 1979
1st Warmest Warmest to Date 2018
May 2014–Apr 2018
48-Month
57.0°F
(13.9°C)
55.4°F
(13.0°C)
1.6°F
(0.9°C)
119th Coolest Coolest since: 2017 1980
4th Warmest Warmest since: 2013 2019
Ties: 2002, 2008, 2013
May 2013–Apr 2018
60-Month
56.4°F
(13.6°C)
55.4°F
(13.0°C)
1.0°F
(0.6°C)
104th Coolest Coolest since: 2015 1980, 1981
18th Warmest Warmest since: 2017 2020
Ties: 2014

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published August 2020, retrieved on August 13, 2020 from https://www.ncdc.noaa.gov/cag/