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


Illinois

Average Temperature Rankings, December 1939

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
December 1939
1-Month
34.1°F
(1.2°C)
29.4°F
(-1.4°C)
4.7°F
(2.6°C)
103rd Coolest Coolest since: 1938 1983
23rd Warmest Warmest since: 1931 2015
Ties: 1949
Nov–Dec 1939
2-Month
37.0°F
(2.8°C)
35.2°F
(1.8°C)
1.8°F
(1.0°C)
93rd Coolest Coolest since: 1938 1950
33rd Warmest Warmest since: 1931 2015
Ties: 1912
Oct–Dec 1939
3-Month
43.5°F
(6.4°C)
41.7°F
(5.4°C)
1.8°F
(1.0°C)
97th Coolest Coolest since: 1937 1976
29th Warmest Warmest since: 1938 1931
Ties: 1899, 1922, 2012
Sep–Dec 1939
4-Month
50.4°F
(10.2°C)
47.8°F
(8.8°C)
2.6°F
(1.4°C)
115th Coolest Coolest since: 1938 1976
11th Warmest Warmest since: 1931 1931
Aug–Dec 1939
5-Month
54.8°F
(12.7°C)
52.9°F
(11.6°C)
1.9°F
(1.1°C)
109th Coolest Coolest since: 1937 1976
17th Warmest Warmest since: 1938 1931
Ties: 1956
Jul–Dec 1939
6-Month
58.3°F
(14.6°C)
56.7°F
(13.7°C)
1.6°F
(0.9°C)
106th Coolest Coolest since: 1937 1976
20th Warmest Warmest since: 1938 1931
Jun–Dec 1939
7-Month
60.4°F
(15.8°C)
58.8°F
(14.9°C)
1.6°F
(0.9°C)
106th Coolest Coolest since: 1938 1917
20th Warmest Warmest since: 1938 1931
Ties: 1900, 1938
May–Dec 1939
8-Month
61.0°F
(16.1°C)
59.2°F
(15.1°C)
1.8°F
(1.0°C)
108th Coolest Coolest since: 1938 1917
18th Warmest Warmest since: 1936 1931
Apr–Dec 1939
9-Month
59.6°F
(15.3°C)
58.4°F
(14.7°C)
1.2°F
(0.6°C)
98th Coolest Coolest since: 1937 1917
28th Warmest Warmest since: 1938 1931
Ties: 2017
Mar–Dec 1939
10-Month
57.8°F
(14.3°C)
56.5°F
(13.6°C)
1.3°F
(0.7°C)
99th Coolest Coolest since: 1937 1917
27th Warmest Warmest since: 1938 2012
Ties: 1954, 1986
Feb–Dec 1939
11-Month
55.1°F
(12.8°C)
54.0°F
(12.2°C)
1.1°F
(0.6°C)
100th Coolest Coolest since: 1937 1917
26th Warmest Warmest since: 1938 2012
Ties: 1933, 1934, 1956, 1986, 1990, 2004, 2018
Jan–Dec 1939
12-Month
53.2°F
(11.8°C)
51.6°F
(10.9°C)
1.6°F
(0.9°C)
105th Coolest Coolest since: 1937 1917
21st Warmest Warmest since: 1938 2012
Ties: 1934, 2002
Jul 1938–Dec 1939
18-Month
55.1°F
(12.8°C)
53.3°F
(11.8°C)
1.8°F
(1.0°C)
113th Coolest Coolest since: 1938 1904
12th Warmest Warmest since: 1932 2012
Jan 1938–Dec 1939
24-Month
53.7°F
(12.1°C)
51.7°F
(10.9°C)
2.0°F
(1.2°C)
117th Coolest Coolest since: 1938 1904, 1979
8th Warmest Warmest since: 1931 2017
Ties: 1931, 1954
Jan 1937–Dec 1939
36-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
98th Coolest Coolest since: 1938 1905
26th Warmest Warmest since: 1935 2017
Ties: 1921, 1940, 1991
Jan 1936–Dec 1939
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
92nd Coolest Coolest since: 1938 1905
31st Warmest Warmest since: 1936 2001, 2018
Ties: 1949, 1988, 1989, 1992, 2014
Jan 1935–Dec 1939
60-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1938 1905
39th Warmest Warmest since: 1938 2002
Ties: 1932, 1938

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 21, 2020 from https://www.ncdc.noaa.gov/cag/