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


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, May 2015

View Period (Months):All1234567891011121824364860
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 2015
1-Month
67.3°F
(19.6°C)
65.1°F
(18.4°C)
2.2°F
(1.2°C)
97th Coolest Coolest since: 2014 1917, 1924
29th Warmest Warmest since: 2012 2018
Apr–May 2015
2-Month
62.8°F
(17.1°C)
60.1°F
(15.6°C)
2.7°F
(1.5°C)
110th Coolest Coolest since: 2014 1907
16th Warmest Warmest since: 2012 1896
Ties: 1959, 1962, 1998
Mar–May 2015
3-Month
56.4°F
(13.6°C)
55.0°F
(12.8°C)
1.4°F
(0.8°C)
89th Coolest Coolest since: 2014 1960
37th Warmest Warmest since: 2012 2012
Ties: 1929, 1936
Feb–May 2015
4-Month
48.8°F
(9.3°C)
49.9°F
(9.9°C)
-1.1°F
(-0.6°C)
38th Coolest Coolest since: 2014 1978
88th Warmest Warmest since: 2013 2012
Ties: 1950
Jan–May 2015
5-Month
45.4°F
(7.4°C)
46.2°F
(7.9°C)
-0.8°F
(-0.5°C)
39th Coolest Coolest since: 2014 1978
87th Warmest Warmest since: 2013 2012
Ties: 1937, 1983, 1985, 1994
Dec 2014–May 2015
6-Month
44.2°F
(6.8°C)
44.2°F
(6.8°C)
0.0°F
(0.0°C)
57th Coolest Coolest since: 2014 1978
68th Warmest Warmest since: 2013 2012
Ties: 1956
Nov 2014–May 2015
7-Month
43.4°F
(6.3°C)
44.3°F
(6.8°C)
-0.9°F
(-0.5°C)
33rd Coolest Coolest since: 2014 1978
92nd Warmest Warmest since: 2013 2012
Ties: 1948
Oct 2014–May 2015
8-Month
45.3°F
(7.4°C)
46.0°F
(7.8°C)
-0.7°F
(-0.4°C)
36th Coolest Coolest since: 2014 1978
89th Warmest Warmest since: 2013 2012
Ties: 1973
Sep 2014–May 2015
9-Month
47.7°F
(8.7°C)
48.5°F
(9.2°C)
-0.8°F
(-0.5°C)
32nd Coolest Coolest since: 2014 1978
93rd Warmest Warmest since: 2013 2012
Aug 2014–May 2015
10-Month
50.6°F
(10.3°C)
51.2°F
(10.7°C)
-0.6°F
(-0.4°C)
32nd Coolest Coolest since: 2014 1978
93rd Warmest Warmest since: 2013 2012
Ties: 1897, 1906, 1929
Jul 2014–May 2015
11-Month
52.7°F
(11.5°C)
53.7°F
(12.1°C)
-1.0°F
(-0.6°C)
23rd Coolest Coolest since: 2014 1918
102nd Warmest Warmest since: 2013 2012
Ties: 1920
Jun 2014–May 2015
12-Month
54.6°F
(12.6°C)
55.4°F
(13.0°C)
-0.8°F
(-0.4°C)
27th Coolest Coolest since: 2014 1904, 1918
98th Warmest Warmest since: 2013 2012
Ties: 1897, 1917, 1920, 1973
Dec 2013–May 2015
18-Month
50.3°F
(10.2°C)
51.6°F
(10.9°C)
-1.3°F
(-0.7°C)
8th Coolest Coolest since: 1980 1979
116th Warmest Warmest since: 2014 2017
Ties: 1899, 1970
Jun 2013–May 2015
24-Month
54.2°F
(12.3°C)
55.3°F
(12.9°C)
-1.1°F
(-0.6°C)
9th Coolest Coolest since: 1980 1905, 1978
115th Warmest Warmest since: 2014 2017
Ties: 1900, 1913, 1952, 1970
Jun 2012–May 2015
36-Month
54.9°F
(12.7°C)
55.3°F
(12.9°C)
-0.4°F
(-0.2°C)
28th Coolest Coolest since: 1984 1979
95th Warmest Warmest since: 2014 2018
Ties: 1900, 1914, 1982
Jun 2011–May 2015
48-Month
56.1°F
(13.4°C)
55.3°F
(12.9°C)
0.8°F
(0.5°C)
97th Coolest Coolest since: 2011 1980
25th Warmest Warmest since: 2014 2019
Ties: 1924, 1932, 1937, 1940, 1942
Jun 2010–May 2015
60-Month
56.2°F
(13.4°C)
55.3°F
(12.9°C)
0.9°F
(0.5°C)
99th Coolest Coolest since: 2011 1979, 1980, 1981
22nd Warmest Warmest since: 2014 1935, 2019
Ties: 1923, 1938, 1939, 1942, 1958, 1992, 2000

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published February 2020, retrieved on February 24, 2020 from https://www.ncdc.noaa.gov/cag/