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 1940

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Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1940
1-Month
58.9°F
(14.9°C)
62.1°F
(16.7°C)
-3.2°F
(-1.8°C)
19th Coolest Coolest since: 1935 1917
107th Warmest Warmest since: 1939 2018
Ties: 1919, 1983
Apr–May 1940
2-Month
54.2°F
(12.3°C)
56.8°F
(13.8°C)
-2.6°F
(-1.5°C)
10th Coolest Coolest since: 1935 1907
116th Warmest Warmest since: 1939 1896
Ties: 1897
Mar–May 1940
3-Month
48.3°F
(9.1°C)
51.1°F
(10.6°C)
-2.8°F
(-1.5°C)
7th Coolest Coolest since: 1926 1960
119th Warmest Warmest since: 1939 2012
Feb–May 1940
4-Month
43.5°F
(6.4°C)
45.6°F
(7.6°C)
-2.1°F
(-1.2°C)
18th Coolest Coolest since: 1924 1978
108th Warmest Warmest since: 1939 2012
Ties: 1914
Jan–May 1940
5-Month
37.4°F
(3.0°C)
41.6°F
(5.3°C)
-4.2°F
(-2.3°C)
5th Coolest Coolest since: 1912 1978, 1979
121st Warmest Warmest since: 1939 2012
Dec 1939–May 1940
6-Month
36.9°F
(2.7°C)
39.6°F
(4.2°C)
-2.7°F
(-1.5°C)
12th Coolest Coolest since: 1936 1978
113th Warmest Warmest since: 1939 2012
Nov 1939–May 1940
7-Month
37.3°F
(2.9°C)
39.8°F
(4.3°C)
-2.5°F
(-1.4°C)
10th Coolest Coolest since: 1936 1904
115th Warmest Warmest since: 1939 2012
Ties: 1918
Oct 1939–May 1940
8-Month
39.7°F
(4.3°C)
41.6°F
(5.3°C)
-1.9°F
(-1.0°C)
13th Coolest Coolest since: 1936 1904, 1978
112th Warmest Warmest since: 1939 2012
Ties: 1905, 1917, 1984
Sep 1939–May 1940
9-Month
43.2°F
(6.2°C)
44.4°F
(6.9°C)
-1.2°F
(-0.7°C)
26th Coolest Coolest since: 1936 1904
99th Warmest Warmest since: 1939 2012
Ties: 1924, 1968
Aug 1939–May 1940
10-Month
46.1°F
(7.8°C)
47.2°F
(8.4°C)
-1.1°F
(-0.6°C)
20th Coolest Coolest since: 1936 1904
105th Warmest Warmest since: 1939 2012
Ties: 1960, 1994, 1996, 1997
Jul 1939–May 1940
11-Month
48.8°F
(9.3°C)
49.8°F
(9.9°C)
-1.0°F
(-0.6°C)
22nd Coolest Coolest since: 1936 1904
103rd Warmest Warmest since: 1939 2012
Ties: 1897, 1996
Jun 1939–May 1940
12-Month
50.8°F
(10.4°C)
51.6°F
(10.9°C)
-0.8°F
(-0.5°C)
27th Coolest Coolest since: 1936 1904
98th Warmest Warmest since: 1939 2012
Ties: 1996
Dec 1938–May 1940
18-Month
47.6°F
(8.7°C)
47.6°F
(8.7°C)
0.0°F
(0.0°C)
60th Coolest Coolest since: 1937 1979
64th Warmest Warmest since: 1939 2017
Ties: 1973
Jun 1938–May 1940
24-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
80th Coolest Coolest since: 1937 1905
44th Warmest Warmest since: 1939 2017
Ties: 1945, 1973, 1986, 2009
Jun 1937–May 1940
36-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1938 1979
40th Warmest Warmest since: 1939 2018
Ties: 1941, 1950, 1990
Jun 1936–May 1940
48-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
89th Coolest Coolest since: 1939 1980
33rd Warmest Warmest since: 1935 2019
Ties: 1941, 1993
Jun 1935–May 1940
60-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
64th Coolest Coolest since: 1931 1906, 1907, 1908, 1981
57th Warmest Warmest since: 1939 2002
Ties: 1922, 1948, 1975

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/