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


Illinois

Average Temperature Rankings, December 1949

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2018)
Warmest/Coolest
Since
Record
December 1949
1-Month
34.1°F
(1.2°C)
29.4°F
(-1.4°C)
4.7°F
(2.6°C)
103rd Coolest Coolest since: 1948 1983
22nd Warmest Warmest since: 1946 2015
Ties: 1939
Nov–Dec 1949
2-Month
38.2°F
(3.4°C)
35.1°F
(1.7°C)
3.1°F
(1.7°C)
100th Coolest Coolest since: 1948 1950
25th Warmest Warmest since: 1946 2015
Ties: 2009
Oct–Dec 1949
3-Month
44.6°F
(7.0°C)
41.7°F
(5.4°C)
2.9°F
(1.6°C)
106th Coolest Coolest since: 1948 1976
19th Warmest Warmest since: 1946 1931
Sep–Dec 1949
4-Month
48.5°F
(9.2°C)
47.7°F
(8.7°C)
0.8°F
(0.5°C)
73rd Coolest Coolest since: 1945 1976
52nd Warmest Warmest since: 1948 1931
Ties: 1986
Aug–Dec 1949
5-Month
53.5°F
(11.9°C)
52.9°F
(11.6°C)
0.6°F
(0.3°C)
72nd Coolest Coolest since: 1945 1976
53rd Warmest Warmest since: 1948 1931
Ties: 1912, 1930, 1934, 1959, 1960, 1988, 1991
Jul–Dec 1949
6-Month
57.6°F
(14.2°C)
56.7°F
(13.7°C)
0.9°F
(0.5°C)
87th Coolest Coolest since: 1948 1976
38th Warmest Warmest since: 1947 1931
Ties: 1923, 1930, 2010
Jun–Dec 1949
7-Month
59.9°F
(15.5°C)
58.7°F
(14.8°C)
1.2°F
(0.7°C)
94th Coolest Coolest since: 1948 1917
31st Warmest Warmest since: 1947 1931
Ties: 1947, 2018
May–Dec 1949
8-Month
60.5°F
(15.8°C)
59.2°F
(15.1°C)
1.3°F
(0.7°C)
96th Coolest Coolest since: 1948 1917
29th Warmest Warmest since: 1941 1931
Ties: 1954
Apr–Dec 1949
9-Month
59.4°F
(15.2°C)
58.4°F
(14.7°C)
1.0°F
(0.5°C)
93rd Coolest Coolest since: 1948 1917
32nd Warmest Warmest since: 1941 1931
Ties: 1930, 1956, 1986, 2018
Mar–Dec 1949
10-Month
57.4°F
(14.1°C)
56.5°F
(13.6°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 1948 1917
37th Warmest Warmest since: 1946 2012
Ties: 2018
Feb–Dec 1949
11-Month
55.0°F
(12.8°C)
54.1°F
(12.3°C)
0.9°F
(0.5°C)
91st Coolest Coolest since: 1948 1917
34th Warmest Warmest since: 1946 2012
Ties: 1971, 2002
Jan–Dec 1949
12-Month
52.8°F
(11.6°C)
51.7°F
(10.9°C)
1.1°F
(0.7°C)
96th Coolest Coolest since: 1948 1917
29th Warmest Warmest since: 1946 2012
Ties: 1913, 1986
Jul 1948–Dec 1949
18-Month
54.3°F
(12.4°C)
53.3°F
(11.8°C)
1.0°F
(0.6°C)
98th Coolest Coolest since: 1948 1904
26th Warmest Warmest since: 1942 2012
Ties: 1942, 2000
Jan 1948–Dec 1949
24-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
86th Coolest Coolest since: 1948 1904, 1979
38th Warmest Warmest since: 1947 2017
Ties: 1935, 1946, 1957, 1965, 2010
Jan 1947–Dec 1949
36-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
74th Coolest Coolest since: 1947 1905
49th Warmest Warmest since: 1948 2017
Ties: 1915, 1942, 1947, 1973
Jan 1946–Dec 1949
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
92nd Coolest Coolest since: 1948 1905
30th Warmest Warmest since: 1941 2001, 2018
Ties: 1939, 1988, 1989, 1992, 2014
Jan 1945–Dec 1949
60-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
75th Coolest Coolest since: 1948 1905
46th Warmest Warmest since: 1943 2002
Ties: 1940, 1943, 1954, 1989, 1995, 1998

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on December 5, 2019 from https://www.ncdc.noaa.gov/cag/