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 April 2022. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, October 2021

View Period (Months):All1234567891011121824364860
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2021)
Warmest/Coolest
Since
Record
October 2021
1-Month
60.2°F
(15.7°C)
54.6°F
(12.6°C)
5.6°F
(3.1°C)
123rd Coolest Coolest since: 2020 1925
5th Warmest Warmest since: 1971 1963
Ties: 1956
Sep–Oct 2021
2-Month
64.9°F
(18.3°C)
60.4°F
(15.8°C)
4.5°F
(2.5°C)
123rd Coolest Coolest since: 2020 1917
5th Warmest Warmest since: 2016 1897, 2016
Ties: 1947, 2007
Aug–Oct 2021
3-Month
68.4°F
(20.2°C)
64.7°F
(18.2°C)
3.7°F
(2.0°C)
123rd Coolest Coolest since: 2020 1917
5th Warmest Warmest since: 2016 1947
Jul–Oct 2021
4-Month
70.0°F
(21.1°C)
67.5°F
(19.7°C)
2.5°F
(1.4°C)
120th Coolest Coolest since: 2020 1917
8th Warmest Warmest since: 2016 1936
Jun–Oct 2021
5-Month
70.8°F
(21.6°C)
68.2°F
(20.1°C)
2.6°F
(1.5°C)
123rd Coolest Coolest since: 2020 1917
5th Warmest Warmest since: 2016 1936
Ties: 2007
May–Oct 2021
6-Month
69.2°F
(20.7°C)
67.2°F
(19.6°C)
2.0°F
(1.1°C)
115th Coolest Coolest since: 2020 1917
13th Warmest Warmest since: 2018 1936
Ties: 1914, 1931, 1933
Apr–Oct 2021
7-Month
66.8°F
(19.3°C)
65.0°F
(18.3°C)
1.8°F
(1.0°C)
114th Coolest Coolest since: 2020 1917
14th Warmest Warmest since: 2016 2010
Ties: 1931, 1954
Mar–Oct 2021
8-Month
64.2°F
(17.9°C)
61.8°F
(16.6°C)
2.4°F
(1.3°C)
120th Coolest Coolest since: 2020 1917
8th Warmest Warmest since: 2016 2012
Feb–Oct 2021
9-Month
59.4°F
(15.2°C)
58.2°F
(14.6°C)
1.2°F
(0.6°C)
102nd Coolest Coolest since: 2020 1917
26th Warmest Warmest since: 2018 2012
Ties: 1934, 1941
Jan–Oct 2021
10-Month
56.4°F
(13.6°C)
54.9°F
(12.7°C)
1.5°F
(0.9°C)
103rd Coolest Coolest since: 2020 1904
25th Warmest Warmest since: 2017 2012
Ties: 1911, 1919, 1986
Dec 2020–Oct 2021
11-Month
54.3°F
(12.4°C)
52.6°F
(11.4°C)
1.7°F
(1.0°C)
106th Coolest Coolest since: 2020 1904
21st Warmest Warmest since: 2017 2012
Ties: 1941, 1955
Nov 2020–Oct 2021
12-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
114th Coolest Coolest since: 2020 1904
13th Warmest Warmest since: 2017 2012
Ties: 1953
May 2020–Oct 2021
18-Month
58.1°F
(14.5°C)
56.8°F
(13.8°C)
1.3°F
(0.7°C)
103rd Coolest Coolest since: 2020 1904
24th Warmest Warmest since: 2017 2012
Ties: 1919, 1935
Nov 2019–Oct 2021
24-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
109th Coolest Coolest since: 2020 1905
17th Warmest Warmest since: 2018 2017
Ties: 1934, 1991, 1992
Nov 2018–Oct 2021
36-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
103rd Coolest Coolest since: 2020 1904, 1979
22nd Warmest Warmest since: 2019 2018
Ties: 1935, 1988, 1992, 2005
Nov 2017–Oct 2021
48-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
105th Coolest Coolest since: 2017 1905
19th Warmest Warmest since: 2020 2019
Ties: 2003, 2017
Nov 2016–Oct 2021
60-Month
53.1°F
(11.7°C)
51.5°F
(10.8°C)
1.6°F
(0.9°C)
118th Coolest Coolest since: 2018 1905, 1906
5th Warmest Warmest since: 2020 2002, 2020
Ties: 1934, 1935, 2006, 2007

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2022, retrieved on May 18, 2022 from https://www.ncdc.noaa.gov/cag/