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 2018

View Period (Months):
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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
December 2018
1-Month
32.8°F
(0.4°C)
28.3°F
(-2.1°C)
4.5°F
(2.5°C)
101st Coolest
Coolest since:
1983
28th Warmest
Warmest since:
2015
Ties: 1911
Nov–Dec 2018
2-Month
33.6°F
(0.9°C)
34.3°F
(1.3°C)
-0.7°F
(-0.4°C)
44th Coolest
Coolest since:
2000
85th Warmest
Warmest since:
1931
Ties: 1895, 2010
Oct–Dec 2018
3-Month
39.9°F
(4.4°C)
41.0°F
(5.0°C)
-1.1°F
(-0.6°C)
34th Coolest
Coolest since:
1976
95th Warmest
Warmest since:
1931
Ties: 1959, 1993
Sep–Dec 2018
4-Month
47.4°F
(8.6°C)
47.3°F
(8.5°C)
0.1°F
(0.1°C)
61st Coolest
Coolest since:
1976
68th Warmest
Warmest since:
1931
Ties: 1964, 2010
Aug–Dec 2018
5-Month
52.9°F
(11.6°C)
52.5°F
(11.4°C)
0.4°F
(0.2°C)
69th Coolest
Coolest since:
1976
60th Warmest
Warmest since:
1931
Ties: 1905, 1959, 1970
Jul–Dec 2018
6-Month
56.6°F
(13.7°C)
56.4°F
(13.6°C)
0.2°F
(0.1°C)
63rd Coolest
Coolest since:
1976
66th Warmest
Warmest since:
1931
Ties: 1963, 1970
Jun–Dec 2018
7-Month
59.3°F
(15.2°C)
58.6°F
(14.8°C)
0.7°F
(0.4°C)
82nd Coolest
Coolest since:
1976
47th Warmest
Warmest since:
1931
Ties: 1897, 1948, 2019
May–Dec 2018
8-Month
60.8°F
(16.0°C)
59.0°F
(15.0°C)
1.8°F
(1.0°C)
111th Coolest
Coolest since:
1917
18th Warmest
Warmest since:
1931
Ties: 1900, 1938
Apr–Dec 2018
9-Month
58.9°F
(14.9°C)
58.2°F
(14.6°C)
0.7°F
(0.3°C)
86th Coolest
Coolest since:
1917
43rd Warmest
Warmest since:
1931
Ties: 1911, 1912, 1918, 1946, 1959, 1963, 1977, 1980
Mar–Dec 2018
10-Month
56.9°F
(13.8°C)
56.3°F
(13.5°C)
0.6°F
(0.3°C)
82nd Coolest
Coolest since:
1917
47th Warmest
Warmest since:
2012
Ties: 1959, 2020
Feb–Dec 2018
11-Month
54.3°F
(12.4°C)
53.7°F
(12.1°C)
0.6°F
(0.3°C)
83rd Coolest
Coolest since:
1917
46th Warmest
Warmest since:
2012
Ties: 1952
Jan–Dec 2018
12-Month
51.7°F
(10.9°C)
51.2°F
(10.7°C)
0.5°F
(0.2°C)
83rd Coolest
Coolest since:
1917
46th Warmest
Warmest since:
2012
Ties: 1900, 1944, 1971, 1983, 2000
Jul 2017–Dec 2018
18-Month
53.5°F
(11.9°C)
53.0°F
(11.7°C)
0.5°F
(0.2°C)
85th Coolest
Coolest since:
1904
43rd Warmest
Warmest since:
2012
Ties: 1923, 1983
Jan 2017–Dec 2018
24-Month
52.7°F
(11.5°C)
51.2°F
(10.7°C)
1.5°F
(0.8°C)
112th Coolest
Coolest since:
1979
16th Warmest
Warmest since:
2017
Ties: 1921, 1953, 2021
Jan 2016–Dec 2018
36-Month
53.2°F
(11.8°C)
51.2°F
(10.7°C)
2.0°F
(1.1°C)
124th Coolest
Coolest since:
1905
3rd Warmest
Warmest since:
2017
Ties: 1933
Jan 2015–Dec 2018
48-Month
53.0°F
(11.7°C)
51.2°F
(10.7°C)
1.8°F
(1.0°C)
123rd Coolest
Coolest since:
1905
3rd Warmest
Warmest since:
1934
Ties: 2001
Jan 2014–Dec 2018
60-Month
52.1°F
(11.2°C)
51.2°F
(10.7°C)
0.9°F
(0.5°C)
102nd Coolest
Coolest since:
1905
23rd Warmest
Warmest since:
1934
Ties: 2009

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