Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of March 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, October 1899

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
October 1899
1-Month
58.2°F
(14.6°C)
54.6°F
(12.6°C)
3.6°F
(2.0°C)
110th Coolest Coolest since: 1898 1925
17th Warmest Warmest since: 1897 1963
Sep–Oct 1899
2-Month
61.4°F
(16.3°C)
60.4°F
(15.8°C)
1.0°F
(0.5°C)
84th Coolest Coolest since: 1898 1917
43rd Warmest Warmest since: 1897 1897, 2016
Ties: 1985
Aug–Oct 1899
3-Month
66.1°F
(18.9°C)
64.7°F
(18.2°C)
1.4°F
(0.7°C)
100th Coolest Coolest since: 1898 1917
27th Warmest Warmest since: 1897 1947
Ties: 1919, 2015
Jul–Oct 1899
4-Month
68.2°F
(20.1°C)
67.5°F
(19.7°C)
0.7°F
(0.4°C)
86th Coolest Coolest since: 1898 1917
41st Warmest Warmest since: 1897 1936
Ties: 1920, 1960, 1991, 2012
Jun–Oct 1899
5-Month
69.1°F
(20.6°C)
68.3°F
(20.2°C)
0.8°F
(0.4°C)
88th Coolest Coolest since: 1898 1917
39th Warmest Warmest since: 1897 1936
Ties: 1911, 1930, 1980, 1988, 2012
May–Oct 1899
6-Month
68.1°F
(20.1°C)
67.2°F
(19.6°C)
0.9°F
(0.5°C)
90th Coolest Coolest since: 1898 1917
37th Warmest Warmest since: 1897 1936
Ties: 1897, 1930, 1971, 1977, 1980, 1986, 2011
Apr–Oct 1899
7-Month
65.9°F
(18.8°C)
65.0°F
(18.3°C)
0.9°F
(0.5°C)
93rd Coolest Coolest since: 1898 1917
34th Warmest Warmest to Date 2010
Ties: 1919, 1947, 2002, 2011, 2019
Mar–Oct 1899
8-Month
61.8°F
(16.6°C)
61.8°F
(16.6°C)
0.0°F
(0.0°C)
56th Coolest Coolest since: 1898 1917
71st Warmest Warmest since: 1898 2012
Ties: 1896, 1898, 1947, 1962, 1980, 1994
Feb–Oct 1899
9-Month
56.9°F
(13.8°C)
58.2°F
(14.6°C)
-1.3°F
(-0.8°C)
20th Coolest Coolest since: 1895 1917
107th Warmest Warmest since: 1898 2012
Ties: 1996
Jan–Oct 1899
10-Month
53.8°F
(12.1°C)
55.0°F
(12.8°C)
-1.2°F
(-0.7°C)
21st Coolest Coolest since: 1895 1904
106th Warmest Warmest since: 1898 2012
Ties: 1915, 1967
Dec 1898–Oct 1899
11-Month
51.2°F
(10.7°C)
52.6°F
(11.4°C)
-1.4°F
(-0.7°C)
15th Coolest Coolest to Date 1904
111th Warmest Warmest since: 1898 2012
Nov 1898–Oct 1899
12-Month
50.0°F
(10.0°C)
51.7°F
(10.9°C)
-1.7°F
(-0.9°C)
10th Coolest Coolest to Date 1904
116th Warmest Warmest since: 1898 2012
Ties: 1982, 1996
May 1898–Oct 1899
18-Month
55.7°F
(13.2°C)
56.8°F
(13.8°C)
-1.1°F
(-0.6°C)
14th Coolest Coolest to Date 1904
112th Warmest Warmest since: 1898 2012
Nov 1897–Oct 1899
24-Month
50.8°F
(10.4°C)
51.6°F
(10.9°C)
-0.8°F
(-0.5°C)
18th Coolest Coolest to Date 1905
107th Warmest Warmest since: 1898 2017
Ties: 1906, 1924, 1961
Nov 1896–Oct 1899
36-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
31st Coolest Coolest to Date 1904, 1979
93rd Warmest Warmest since: 1898 2018
Ties: 1909, 1920, 1925, 1927, 1951, 1964, 1997
Nov 1895–Oct 1899
48-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
45th Coolest Coolest to Date 1905
78th Warmest Warmest to Date 2019
Ties: 1977

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published April 2021, retrieved on April 10, 2021 from https://www.ncdc.noaa.gov/cag/