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 2017

View Period (Months):
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2017
1-Month
29.1°F
(-1.6°C)
28.3°F
(-2.1°C)
0.8°F
(0.5°C)
61st Coolest
Coolest since:
1983
68th Warmest
Warmest since:
2015
Nov–Dec 2017
2-Month
34.7°F
(1.5°C)
34.2°F
(1.2°C)
0.5°F
(0.3°C)
65th Coolest
Coolest since:
2000
64th Warmest
Warmest since:
1931
Oct–Dec 2017
3-Month
42.2°F
(5.7°C)
41.0°F
(5.0°C)
1.2°F
(0.7°C)
83rd Coolest
Coolest since:
1976
46th Warmest
Warmest since:
1931
Sep–Dec 2017
4-Month
48.8°F
(9.3°C)
47.2°F
(8.4°C)
1.6°F
(0.9°C)
99th Coolest
Coolest since:
1976
30th Warmest
Warmest since:
1931
Ties: 1908, 1912, 1921, 1927, 1984
Aug–Dec 2017
5-Month
53.1°F
(11.7°C)
52.6°F
(11.4°C)
0.5°F
(0.3°C)
74th Coolest
Coolest since:
1976
55th Warmest
Warmest since:
1931
Ties: 1906
Jul–Dec 2017
6-Month
56.9°F
(13.8°C)
56.4°F
(13.6°C)
0.5°F
(0.2°C)
72nd Coolest
Coolest since:
1976
57th Warmest
Warmest since:
1931
Ties: 1955, 1957
Jun–Dec 2017
7-Month
59.2°F
(15.1°C)
58.6°F
(14.8°C)
0.6°F
(0.3°C)
78th Coolest
Coolest since:
1976
51st Warmest
Warmest since:
1931
Ties: 1920, 1952, 1990
May–Dec 2017
8-Month
59.5°F
(15.3°C)
59.0°F
(15.0°C)
0.5°F
(0.3°C)
74th Coolest
Coolest since:
1917
55th Warmest
Warmest since:
1931
Ties: 1946, 1952, 2022
Apr–Dec 2017
9-Month
59.1°F
(15.1°C)
58.2°F
(14.6°C)
0.9°F
(0.5°C)
90th Coolest
Coolest since:
1917
39th Warmest
Warmest since:
1931
Ties: 1955
Mar–Dec 2017
10-Month
57.4°F
(14.1°C)
56.2°F
(13.4°C)
1.2°F
(0.7°C)
96th Coolest
Coolest since:
1917
33rd Warmest
Warmest since:
2012
Ties: 1949, 1963, 1986, 1994
Feb–Dec 2017
11-Month
55.9°F
(13.3°C)
53.7°F
(12.1°C)
2.2°F
(1.2°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2012
Ties: 1930
Jan–Dec 2017
12-Month
53.7°F
(12.1°C)
51.2°F
(10.7°C)
2.5°F
(1.4°C)
121st Coolest
Coolest since:
1917
8th Warmest
Warmest since:
2012
Jul 2016–Dec 2017
18-Month
55.5°F
(13.1°C)
52.9°F
(11.6°C)
2.6°F
(1.5°C)
124th Coolest
Coolest since:
1904
4th Warmest
Warmest since:
2012
Ties: 1921
Jan 2016–Dec 2017
24-Month
53.9°F
(12.2°C)
51.2°F
(10.7°C)
2.7°F
(1.5°C)
127th Coolest
Coolest since:
1979
1st Warmest
Warmest to Date
2017
Jan 2015–Dec 2017
36-Month
53.4°F
(11.9°C)
51.2°F
(10.7°C)
2.2°F
(1.2°C)
126th Coolest
Coolest since:
1905
1st Warmest
Warmest to Date
2017
Jan 2014–Dec 2017
48-Month
52.2°F
(11.2°C)
51.2°F
(10.7°C)
1.0°F
(0.5°C)
103rd Coolest
Coolest since:
1905
23rd Warmest
Warmest since:
1934
Ties: 1990, 2005
Jan 2013–Dec 2017
60-Month
51.8°F
(11.0°C)
51.2°F
(10.7°C)
0.6°F
(0.3°C)
88th Coolest
Coolest since:
1905
37th Warmest
Warmest since:
1934
Ties: 1925, 1958, 1987, 1992, 2000, 2010, 2022

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