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 July 2022. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, December 1899

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
December 1899
1-Month
27.4°F
(-2.6°C)
29.4°F
(-1.4°C)
-2.0°F
(-1.2°C)
40th Coolest Coolest since: 1898 1983
88th Warmest Warmest since: 1896 2015
Ties: 1926, 1969
Nov–Dec 1899
2-Month
36.2°F
(2.3°C)
35.2°F
(1.8°C)
1.0°F
(0.5°C)
78th Coolest Coolest since: 1898 1950
50th Warmest Warmest since: 1896 2015
Ties: 1915, 1940, 1970, 1978, 2007
Oct–Dec 1899
3-Month
43.5°F
(6.4°C)
41.6°F
(5.3°C)
1.9°F
(1.1°C)
97th Coolest Coolest since: 1898 1976
31st Warmest Warmest to Date 1931
Ties: 1922, 1939, 2012
Sep–Dec 1899
4-Month
48.8°F
(9.3°C)
47.8°F
(8.8°C)
1.0°F
(0.5°C)
81st Coolest Coolest since: 1898 1976
47th Warmest Warmest since: 1897 1931
Ties: 2012
Aug–Dec 1899
5-Month
54.1°F
(12.3°C)
52.9°F
(11.6°C)
1.2°F
(0.7°C)
97th Coolest Coolest since: 1898 1976
31st Warmest Warmest to Date 1931
Ties: 1921, 1933, 1940, 1975, 1990, 2020
Jul–Dec 1899
6-Month
57.5°F
(14.2°C)
56.7°F
(13.7°C)
0.8°F
(0.5°C)
83rd Coolest Coolest since: 1898 1976
45th Warmest Warmest to Date 1931
Ties: 1988, 2017
Jun–Dec 1899
7-Month
59.7°F
(15.4°C)
58.8°F
(14.9°C)
0.9°F
(0.5°C)
88th Coolest Coolest since: 1898 1917
40th Warmest Warmest to Date 1931
Ties: 1923, 2006, 2017, 2019
May–Dec 1899
8-Month
60.1°F
(15.6°C)
59.2°F
(15.1°C)
0.9°F
(0.5°C)
90th Coolest Coolest since: 1898 1917
38th Warmest Warmest to Date 1931
Ties: 1911, 1959, 1980, 1982, 1984, 2019
Apr–Dec 1899
9-Month
59.3°F
(15.2°C)
58.4°F
(14.7°C)
0.9°F
(0.5°C)
90th Coolest Coolest since: 1898 1917
38th Warmest Warmest to Date 1931
Ties: 1977
Mar–Dec 1899
10-Month
56.7°F
(13.7°C)
56.5°F
(13.6°C)
0.2°F
(0.1°C)
70th Coolest Coolest since: 1898 1917
58th Warmest Warmest since: 1896 2012
Ties: 1905, 1942, 1952, 1982
Feb–Dec 1899
11-Month
53.1°F
(11.7°C)
54.0°F
(12.2°C)
-0.9°F
(-0.5°C)
28th Coolest Coolest since: 1895 1917
100th Warmest Warmest since: 1898 2012
Ties: 2008, 2013
Jan–Dec 1899
12-Month
50.8°F
(10.4°C)
51.6°F
(10.9°C)
-0.8°F
(-0.5°C)
32nd Coolest Coolest since: 1895 1917
96th Warmest Warmest since: 1898 2012
Ties: 1901, 1910, 1920
Jul 1898–Dec 1899
18-Month
52.2°F
(11.2°C)
53.3°F
(11.8°C)
-1.1°F
(-0.6°C)
13th Coolest Coolest to Date 1904
114th Warmest Warmest since: 1898 2012
Ties: 1903, 1968, 1996
Jan 1898–Dec 1899
24-Month
51.1°F
(10.6°C)
51.7°F
(10.9°C)
-0.6°F
(-0.3°C)
33rd Coolest Coolest since: 1896 1904, 1979
94th Warmest Warmest since: 1898 2017
Ties: 1913, 1926, 1960
Jan 1897–Dec 1899
36-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
30th Coolest Coolest since: 1897 1905
96th Warmest Warmest since: 1898 2017
Ties: 1901, 1902, 1909, 1937, 1982, 1996
Jan 1896–Dec 1899
48-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
41st Coolest Coolest since: 1898 1905
84th Warmest Warmest to Date 2001, 2018
Ties: 1900, 1913, 1925, 1928, 1945, 1950, 1966, 1967, 1977, 1983
Jan 1895–Dec 1899
60-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
24th Coolest Coolest to Date 1905
100th Warmest Warmest to Date 2002
Ties: 1902, 1909, 1929, 1951, 1964, 1971, 1972, 1997

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published August 2022, retrieved on August 20, 2022 from https://www.ncei.noaa.gov/cag/