Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 3. West

Average Temperature Rankings, December 1940

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PeriodValue1901-2000
Mean
AnomalyRank
(1895-2022)
Warmest/Coolest
Since
Record
December 1940
1-Month
33.2°F
(0.7°C)
28.3°F
(-2.1°C)
4.9°F
(2.8°C)
105th Coolest
Coolest since:
1983
24th Warmest
Warmest since:
2015
Nov–Dec 1940
2-Month
35.3°F
(1.8°C)
34.3°F
(1.3°C)
1.0°F
(0.5°C)
76th Coolest
Coolest since:
2000
53rd Warmest
Warmest since:
1931
Ties: 1907, 2002, 2022
Oct–Dec 1940
3-Month
43.2°F
(6.2°C)
41.0°F
(5.0°C)
2.2°F
(1.2°C)
104th Coolest
Coolest since:
1976
25th Warmest
Warmest since:
1931
Ties: 2003
Sep–Dec 1940
4-Month
48.9°F
(9.4°C)
47.3°F
(8.5°C)
1.6°F
(0.9°C)
100th Coolest
Coolest since:
1976
29th Warmest
Warmest since:
1931
Aug–Dec 1940
5-Month
53.8°F
(12.1°C)
52.5°F
(11.4°C)
1.3°F
(0.7°C)
99th Coolest
Coolest since:
1976
30th Warmest
Warmest since:
1931
Ties: 1921, 1930, 1933, 1948
Jul–Dec 1940
6-Month
57.7°F
(14.3°C)
56.5°F
(13.6°C)
1.2°F
(0.7°C)
104th Coolest
Coolest since:
1976
25th Warmest
Warmest since:
1931
Ties: 1922, 1994, 2005, 2012
Jun–Dec 1940
7-Month
59.9°F
(15.5°C)
58.6°F
(14.8°C)
1.3°F
(0.7°C)
101st Coolest
Coolest since:
1976
28th Warmest
Warmest since:
1931
Ties: 1930, 1994
May–Dec 1940
8-Month
59.9°F
(15.5°C)
59.1°F
(15.1°C)
0.8°F
(0.4°C)
88th Coolest
Coolest since:
1917
41st Warmest
Warmest since:
1931
Ties: 1947, 1959, 2006
Apr–Dec 1940
9-Month
58.7°F
(14.8°C)
58.2°F
(14.6°C)
0.5°F
(0.2°C)
75th Coolest
Coolest since:
1917
54th Warmest
Warmest since:
1931
Ties: 1923, 1952, 2019
Mar–Dec 1940
10-Month
56.4°F
(13.6°C)
56.3°F
(13.5°C)
0.1°F
(0.1°C)
69th Coolest
Coolest since:
1917
60th Warmest
Warmest since:
2012
Ties: 1899, 1952, 1965, 1970
Feb–Dec 1940
11-Month
53.8°F
(12.1°C)
53.7°F
(12.1°C)
0.1°F
(0.0°C)
70th Coolest
Coolest since:
1917
59th Warmest
Warmest since:
2012
Ties: 1897, 1900, 1914, 1942, 1970, 1983
Jan–Dec 1940
12-Month
50.2°F
(10.1°C)
51.2°F
(10.7°C)
-1.0°F
(-0.6°C)
29th Coolest
Coolest since:
1917
100th Warmest
Warmest since:
2012
Ties: 1902, 2013
Jul 1939–Dec 1940
18-Month
52.9°F
(11.6°C)
53.0°F
(11.7°C)
-0.1°F
(-0.1°C)
57th Coolest
Coolest since:
1904
71st Warmest
Warmest since:
2012
Ties: 1944, 1992, 2010
Jan 1939–Dec 1940
24-Month
51.7°F
(10.9°C)
51.2°F
(10.7°C)
0.5°F
(0.2°C)
85th Coolest
Coolest since:
1979
43rd Warmest
Warmest since:
2017
Ties: 1965, 1974, 2003
Jan 1938–Dec 1940
36-Month
52.5°F
(11.4°C)
51.2°F
(10.7°C)
1.3°F
(0.7°C)
110th Coolest
Coolest since:
1905
17th Warmest
Warmest since:
2017
Ties: 1956, 2001, 2013
Jan 1937–Dec 1940
48-Month
51.9°F
(11.1°C)
51.2°F
(10.7°C)
0.7°F
(0.4°C)
89th Coolest
Coolest since:
1905
37th Warmest
Warmest since:
1934
Ties: 1924, 1987, 1991, 2022
Jan 1936–Dec 1940
60-Month
51.9°F
(11.1°C)
51.2°F
(10.7°C)
0.7°F
(0.4°C)
91st Coolest
Coolest since:
1905
34th Warmest
Warmest since:
1934
Ties: 1937, 1988, 2022

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