Statewide Rankings

Statewide 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

Average Temperature Rankings, October 2018

View Period (Months):
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  • Record Coolest
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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
October 2018
1-Month
54.2°F
(12.3°C)
54.6°F
(12.6°C)
-0.4°F
(-0.3°C)
55th Coolest
Coolest since:
1925
74th Warmest
Warmest since:
1963
Ties: 2008
Sep–Oct 2018
2-Month
62.2°F
(16.8°C)
60.4°F
(15.8°C)
1.8°F
(1.0°C)
100th Coolest
Coolest since:
1917
29th Warmest
Warmest since:
1897, 2016
Ties: 1986, 2000
Aug–Oct 2018
3-Month
66.4°F
(19.1°C)
64.8°F
(18.2°C)
1.6°F
(0.9°C)
105th Coolest
Coolest since:
1917
24th Warmest
Warmest since:
1947
Ties: 1920
Jul–Oct 2018
4-Month
68.6°F
(20.3°C)
67.5°F
(19.7°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1917
29th Warmest
Warmest since:
1936
Ties: 1922, 1930, 1933, 1940, 2002
Jun–Oct 2018
5-Month
69.8°F
(21.0°C)
68.2°F
(20.1°C)
1.6°F
(0.9°C)
105th Coolest
Coolest since:
1917
24th Warmest
Warmest since:
1936
Ties: 1973
May–Oct 2018
6-Month
70.0°F
(21.1°C)
67.3°F
(19.6°C)
2.7°F
(1.5°C)
125th Coolest
Coolest since:
1917
4th Warmest
Warmest since:
1936
Apr–Oct 2018
7-Month
66.4°F
(19.1°C)
65.0°F
(18.3°C)
1.4°F
(0.8°C)
108th Coolest
Coolest since:
1917
21st Warmest
Warmest since:
2010
Ties: 1938, 1986, 2017
Mar–Oct 2018
8-Month
63.0°F
(17.2°C)
61.9°F
(16.6°C)
1.1°F
(0.6°C)
102nd Coolest
Coolest since:
1917
27th Warmest
Warmest since:
2012
Ties: 1914, 1939
Feb–Oct 2018
9-Month
59.5°F
(15.3°C)
58.2°F
(14.6°C)
1.3°F
(0.7°C)
105th Coolest
Coolest since:
1917
24th Warmest
Warmest since:
2012
Ties: 1911
Jan–Oct 2018
10-Month
56.0°F
(13.3°C)
54.9°F
(12.7°C)
1.1°F
(0.6°C)
94th Coolest
Coolest since:
1904
35th Warmest
Warmest since:
2012
Ties: 2020
Dec 2017–Oct 2018
11-Month
53.6°F
(12.0°C)
52.6°F
(11.4°C)
1.0°F
(0.6°C)
94th Coolest
Coolest since:
1904
34th Warmest
Warmest since:
2012
Ties: 1911, 1946, 1949
Nov 2017–Oct 2018
12-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
94th Coolest
Coolest since:
1904
34th Warmest
Warmest since:
2012
Ties: 1988, 2020
May 2017–Oct 2018
18-Month
57.8°F
(14.3°C)
56.9°F
(13.8°C)
0.9°F
(0.5°C)
97th Coolest
Coolest since:
1904
31st Warmest
Warmest since:
2012
Ties: 1941, 1988, 2011, 2013, 2020
Nov 2016–Oct 2018
24-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
117th Coolest
Coolest since:
1905
10th Warmest
Warmest since:
2017
Ties: 2006
Nov 2015–Oct 2018
36-Month
54.4°F
(12.4°C)
51.6°F
(10.9°C)
2.8°F
(1.5°C)
125th Coolest
Coolest since:
1904, 1979
1st Warmest
Warmest to Date
2018
Nov 2014–Oct 2018
48-Month
53.6°F
(12.0°C)
51.6°F
(10.9°C)
2.0°F
(1.1°C)
123rd Coolest
Coolest since:
1905
2nd Warmest
Warmest since:
2019
Ties: 2007
Nov 2013–Oct 2018
60-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
108th Coolest
Coolest since:
1905, 1906
16th Warmest
Warmest since:
2002, 2020
Ties: 1936, 2001, 2004, 2005, 2009, 2012, 2022

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