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 1901

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 1901
1-Month
23.1°F
(-4.9°C)
28.3°F
(-2.1°C)
-5.2°F
(-2.8°C)
16th Coolest
Coolest to Date
1983
113th Warmest
Warmest since:
2015
Nov–Dec 1901
2-Month
30.0°F
(-1.1°C)
34.3°F
(1.3°C)
-4.3°F
(-2.4°C)
9th Coolest
Coolest since:
2000
120th Warmest
Warmest since:
1931
Ties: 1898, 1951
Oct–Dec 1901
3-Month
38.5°F
(3.6°C)
41.0°F
(5.0°C)
-2.5°F
(-1.4°C)
19th Coolest
Coolest since:
1976
110th Warmest
Warmest since:
1931
Ties: 1895, 1951, 1955
Sep–Dec 1901
4-Month
45.2°F
(7.3°C)
47.3°F
(8.5°C)
-2.1°F
(-1.2°C)
21st Coolest
Coolest since:
1976
108th Warmest
Warmest since:
1931
Ties: 1909, 1935
Aug–Dec 1901
5-Month
51.1°F
(10.6°C)
52.5°F
(11.4°C)
-1.4°F
(-0.8°C)
24th Coolest
Coolest since:
1976
105th Warmest
Warmest since:
1931
Ties: 1935, 1969
Jul–Dec 1901
6-Month
56.3°F
(13.5°C)
56.5°F
(13.6°C)
-0.2°F
(-0.1°C)
53rd Coolest
Coolest since:
1976
76th Warmest
Warmest since:
1931
Ties: 1952, 1986, 1991
Jun–Dec 1901
7-Month
58.9°F
(14.9°C)
58.6°F
(14.8°C)
0.3°F
(0.1°C)
68th Coolest
Coolest since:
1976
61st Warmest
Warmest since:
1931
Ties: 1912, 1959, 1979, 2022
May–Dec 1901
8-Month
59.2°F
(15.1°C)
59.1°F
(15.1°C)
0.1°F
(0.0°C)
58th Coolest
Coolest since:
1917
71st Warmest
Warmest since:
1931
Ties: 1896, 1955
Apr–Dec 1901
9-Month
58.2°F
(14.6°C)
58.2°F
(14.6°C)
0.0°F
(0.0°C)
55th Coolest
Coolest since:
1917
74th Warmest
Warmest since:
1931
Ties: 1978
Mar–Dec 1901
10-Month
56.1°F
(13.4°C)
56.3°F
(13.5°C)
-0.2°F
(-0.1°C)
51st Coolest
Coolest since:
1917
78th Warmest
Warmest since:
2012
Ties: 1919, 1920, 1944, 1962
Feb–Dec 1901
11-Month
52.8°F
(11.6°C)
53.7°F
(12.1°C)
-0.9°F
(-0.5°C)
31st Coolest
Coolest since:
1917
98th Warmest
Warmest since:
2012
Ties: 1899, 1943, 1945
Jan–Dec 1901
12-Month
50.7°F
(10.4°C)
51.2°F
(10.7°C)
-0.5°F
(-0.3°C)
43rd Coolest
Coolest since:
1917
86th Warmest
Warmest since:
2012
Ties: 1915, 1968, 1970
Jul 1900–Dec 1901
18-Month
53.3°F
(11.8°C)
53.0°F
(11.7°C)
0.3°F
(0.1°C)
78th Coolest
Coolest since:
1904
50th Warmest
Warmest since:
2012
Ties: 1908, 1935, 1971
Jan 1900–Dec 1901
24-Month
51.2°F
(10.7°C)
51.2°F
(10.7°C)
0.0°F
(0.0°C)
61st Coolest
Coolest since:
1979
67th Warmest
Warmest since:
2017
Ties: 1908, 1909, 1920, 1971, 1975
Jan 1899–Dec 1901
36-Month
50.9°F
(10.5°C)
51.2°F
(10.7°C)
-0.3°F
(-0.2°C)
36th Coolest
Coolest since:
1905
91st Warmest
Warmest since:
2017
Ties: 1900, 1902, 1927, 1937, 1959, 1976, 1977, 1985, 1994, 2010
Jan 1898–Dec 1901
48-Month
50.9°F
(10.5°C)
51.2°F
(10.7°C)
-0.3°F
(-0.2°C)
36th Coolest
Coolest since:
1905
90th Warmest
Warmest since:
1934
Ties: 1898, 1910, 1945, 1967, 1977
Jan 1897–Dec 1901
60-Month
50.9°F
(10.5°C)
51.2°F
(10.7°C)
-0.3°F
(-0.2°C)
36th Coolest
Coolest since:
1905
89th Warmest
Warmest since:
1934
Ties: 1910, 1926, 1952, 1967, 1976, 1985

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