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


Illinois

Average Temperature Rankings, May 2015

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 2015
1-Month
64.9°F
(18.3°C)
62.1°F
(16.7°C)
2.8°F
(1.6°C)
99th Coolest Coolest since: 2014 1917
27th Warmest Warmest since: 2012 2018
Apr–May 2015
2-Month
59.6°F
(15.3°C)
56.8°F
(13.8°C)
2.8°F
(1.5°C)
109th Coolest Coolest since: 2014 1907
17th Warmest Warmest since: 2012 1896
Ties: 1934, 2006
Mar–May 2015
3-Month
52.5°F
(11.4°C)
51.1°F
(10.6°C)
1.4°F
(0.8°C)
90th Coolest Coolest since: 2014 1960
36th Warmest Warmest since: 2012 2012
Ties: 1908, 1911, 1988
Feb–May 2015
4-Month
44.2°F
(6.8°C)
45.6°F
(7.6°C)
-1.4°F
(-0.8°C)
33rd Coolest Coolest since: 2014 1978
93rd Warmest Warmest since: 2013 2012
Jan–May 2015
5-Month
40.5°F
(4.7°C)
41.6°F
(5.3°C)
-1.1°F
(-0.6°C)
32nd Coolest Coolest since: 2014 1978, 1979
94th Warmest Warmest since: 2013 2012
Ties: 1900, 2008
Dec 2014–May 2015
6-Month
39.4°F
(4.1°C)
39.6°F
(4.2°C)
-0.2°F
(-0.1°C)
53rd Coolest Coolest since: 2014 1978
72nd Warmest Warmest since: 2013 2012
Ties: 1928, 1937, 1948, 1964
Nov 2014–May 2015
7-Month
38.7°F
(3.7°C)
39.7°F
(4.3°C)
-1.0°F
(-0.6°C)
25th Coolest Coolest since: 2014 1904
100th Warmest Warmest since: 2013 2012
Ties: 1971
Oct 2014–May 2015
8-Month
40.7°F
(4.8°C)
41.6°F
(5.3°C)
-0.9°F
(-0.5°C)
28th Coolest Coolest since: 2014 1904, 1978
97th Warmest Warmest since: 2013 2012
Ties: 1971
Sep 2014–May 2015
9-Month
43.3°F
(6.3°C)
44.3°F
(6.8°C)
-1.0°F
(-0.5°C)
29th Coolest Coolest since: 2014 1904
96th Warmest Warmest since: 2013 2012
Aug 2014–May 2015
10-Month
46.4°F
(8.0°C)
47.3°F
(8.5°C)
-0.9°F
(-0.5°C)
30th Coolest Coolest since: 2014 1904
95th Warmest Warmest since: 2013 2012
Ties: 1943
Jul 2014–May 2015
11-Month
48.6°F
(9.2°C)
49.9°F
(9.9°C)
-1.3°F
(-0.7°C)
19th Coolest Coolest since: 2014 1904
106th Warmest Warmest since: 2013 2012
Ties: 1993
Jun 2014–May 2015
12-Month
50.6°F
(10.3°C)
51.6°F
(10.9°C)
-1.0°F
(-0.6°C)
20th Coolest Coolest since: 2014 1904
105th Warmest Warmest since: 2013 2012
Ties: 1897, 1920, 1926
Dec 2013–May 2015
18-Month
45.7°F
(7.6°C)
47.6°F
(8.7°C)
-1.9°F
(-1.1°C)
7th Coolest Coolest since: 1980 1979
117th Warmest Warmest since: 2014 2017
Jun 2013–May 2015
24-Month
50.1°F
(10.1°C)
51.6°F
(10.9°C)
-1.5°F
(-0.8°C)
6th Coolest Coolest since: 1979 1905
118th Warmest Warmest since: 2014 2017
Jun 2012–May 2015
36-Month
50.9°F
(10.5°C)
51.6°F
(10.9°C)
-0.7°F
(-0.4°C)
17th Coolest Coolest since: 1980 1979
106th Warmest Warmest since: 2014 2018
Ties: 1926, 1952, 1961, 1963, 1969
Jun 2011–May 2015
48-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
86th Coolest Coolest since: 2011 1980
36th Warmest Warmest since: 2014 2019
Ties: 1937, 1944, 1958, 1987, 1999, 2010
Jun 2010–May 2015
60-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
90th Coolest Coolest since: 2011 1906, 1907, 1908, 1981
31st Warmest Warmest since: 2014 2002
Ties: 1925, 1933, 1939, 1990, 1993, 1999

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2019, retrieved on September 22, 2019 from https://www.ncdc.noaa.gov/cag/