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 August 2019. For more information, please see Climatological Rankings.


Illinois, Climate Division 1. Northwest

Average Temperature Rankings, May 2018

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 2018
1-Month
67.4°F
(19.7°C)
59.7°F
(15.4°C)
7.7°F
(4.3°C)
124th Coolest Coolest since: 2017 1907
2nd Warmest Warmest since: 1977 1977
Apr–May 2018
2-Month
53.9°F
(12.2°C)
54.0°F
(12.2°C)
-0.1°F
(0.0°C)
55th Coolest Coolest since: 2008 1907
71st Warmest Warmest since: 2017 1977
Ties: 1913
Mar–May 2018
3-Month
48.0°F
(8.9°C)
47.9°F
(8.8°C)
0.1°F
(0.1°C)
63rd Coolest Coolest since: 2014 1960
63rd Warmest Warmest since: 2017 2012
Feb–May 2018
4-Month
42.0°F
(5.6°C)
41.9°F
(5.5°C)
0.1°F
(0.1°C)
65th Coolest Coolest since: 2015 1947
61st Warmest Warmest since: 2017 2012
Ties: 1969
Jan–May 2018
5-Month
37.7°F
(3.2°C)
37.5°F
(3.1°C)
0.2°F
(0.1°C)
70th Coolest Coolest since: 2015 1912
56th Warmest Warmest since: 2017 2012
Ties: 1910, 1915, 1956, 2009, 2011
Dec 2017–May 2018
6-Month
35.6°F
(2.0°C)
35.4°F
(1.9°C)
0.2°F
(0.1°C)
69th Coolest Coolest since: 2015 1979
56th Warmest Warmest since: 2017 2012
Ties: 1906, 1964
Nov 2017–May 2018
7-Month
35.9°F
(2.2°C)
35.7°F
(2.1°C)
0.2°F
(0.1°C)
72nd Coolest Coolest since: 2015 1904
53rd Warmest Warmest since: 2017 2012
Ties: 1925, 1935, 1945
Oct 2017–May 2018
8-Month
38.3°F
(3.5°C)
37.7°F
(3.2°C)
0.6°F
(0.3°C)
81st Coolest Coolest since: 2015 1912
44th Warmest Warmest since: 2017 2012
Ties: 1896, 1949
Sep 2017–May 2018
9-Month
41.5°F
(5.3°C)
40.6°F
(4.8°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 2015 1904
37th Warmest Warmest since: 2017 2012
Ties: 1896, 1957, 1974
Aug 2017–May 2018
10-Month
44.1°F
(6.7°C)
43.6°F
(6.4°C)
0.5°F
(0.3°C)
79th Coolest Coolest since: 2015 1904
46th Warmest Warmest since: 2017 2012
Ties: 1898, 1973, 1990, 2013
Jul 2017–May 2018
11-Month
46.8°F
(8.2°C)
46.4°F
(8.0°C)
0.4°F
(0.2°C)
75th Coolest Coolest since: 2015 1904
50th Warmest Warmest since: 2017 2012
Ties: 1928, 1946
Jun 2017–May 2018
12-Month
48.8°F
(9.3°C)
48.2°F
(9.0°C)
0.6°F
(0.3°C)
78th Coolest Coolest since: 2015 1904
47th Warmest Warmest since: 2017 2012
Ties: 1898, 1945, 2010
Dec 2016–May 2018
18-Month
45.7°F
(7.6°C)
43.9°F
(6.6°C)
1.8°F
(1.0°C)
107th Coolest Coolest since: 2015 1918
17th Warmest Warmest since: 2017 2017
Ties: 2003
Jun 2016–May 2018
24-Month
50.6°F
(10.3°C)
48.2°F
(9.0°C)
2.4°F
(1.3°C)
115th Coolest Coolest since: 2016 1905
9th Warmest Warmest since: 2017 2017
Ties: 2006
Jun 2015–May 2018
36-Month
50.9°F
(10.5°C)
48.2°F
(9.0°C)
2.7°F
(1.5°C)
121st Coolest Coolest since: 2017 1905, 1918, 1979
2nd Warmest Warmest since: 2000 2000
Jun 2014–May 2018
48-Month
50.0°F
(10.0°C)
48.2°F
(9.0°C)
1.8°F
(1.0°C)
116th Coolest Coolest since: 2017 1980
6th Warmest Warmest since: 2013 2001, 2002, 2007
Ties: 1934, 2000, 2013
Jun 2013–May 2018
60-Month
49.1°F
(9.5°C)
48.1°F
(8.9°C)
1.0°F
(0.6°C)
96th Coolest Coolest since: 2015 1907, 1908
25th Warmest Warmest since: 2017 2002
Ties: 1923, 1941, 1989, 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published September 2019, retrieved on September 18, 2019 from https://www.ncdc.noaa.gov/cag/