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 December 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, August 2020

View Period (Months):All1234567891011121824364860
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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
(1895-2020)
Warmest/Coolest
Since
Record
August 2020
1-Month
72.8°F
(22.7°C)
73.4°F
(23.0°C)
-0.6°F
(-0.3°C)
46th Coolest Coolest since: 2019 1915
81st Warmest Warmest since: 2019 1947
Ties: 1961, 1989, 2013, 2019
Jul–Aug 2020
2-Month
75.0°F
(23.9°C)
74.5°F
(23.6°C)
0.5°F
(0.3°C)
81st Coolest Coolest since: 2018 1915
46th Warmest Warmest since: 2019 1936
Ties: 1899, 1940, 2003
Jun–Aug 2020
3-Month
74.5°F
(23.6°C)
73.4°F
(23.0°C)
1.1°F
(0.6°C)
91st Coolest Coolest since: 2019 1915
36th Warmest Warmest since: 2018 1936
Ties: 1911
May–Aug 2020
4-Month
71.0°F
(21.7°C)
70.6°F
(21.4°C)
0.4°F
(0.3°C)
72nd Coolest Coolest since: 2019 1915
55th Warmest Warmest since: 2018 1934, 1936
Ties: 1957
Apr–Aug 2020
5-Month
66.8°F
(19.3°C)
66.8°F
(19.3°C)
0.0°F
(0.0°C)
56th Coolest Coolest since: 2014 1907
71st Warmest Warmest since: 2019 1934
Mar–Aug 2020
6-Month
63.0°F
(17.2°C)
62.3°F
(16.8°C)
0.7°F
(0.4°C)
83rd Coolest Coolest since: 2019 1904, 1950, 1960
44th Warmest Warmest since: 2018 2012
Ties: 1952, 1963
Feb–Aug 2020
7-Month
58.6°F
(14.8°C)
57.6°F
(14.2°C)
1.0°F
(0.6°C)
88th Coolest Coolest since: 2019 1904
39th Warmest Warmest since: 2018 2012
Ties: 1949
Jan–Aug 2020
8-Month
55.2°F
(12.9°C)
53.5°F
(11.9°C)
1.7°F
(1.0°C)
103rd Coolest Coolest since: 2019 1904, 1912
24th Warmest Warmest since: 2017 2012
Ties: 1999, 2007
Dec 2019–Aug 2020
9-Month
53.1°F
(11.7°C)
50.9°F
(10.5°C)
2.2°F
(1.2°C)
112th Coolest Coolest since: 2019 1904
14th Warmest Warmest since: 2017 2012
Ties: 1983, 2000
Nov 2019–Aug 2020
10-Month
51.4°F
(10.8°C)
49.9°F
(9.9°C)
1.5°F
(0.9°C)
100th Coolest Coolest since: 2019 1904
26th Warmest Warmest since: 2017 2012
Ties: 1976
Oct 2019–Aug 2020
11-Month
51.6°F
(10.9°C)
50.3°F
(10.2°C)
1.3°F
(0.7°C)
99th Coolest Coolest since: 2019 1904
27th Warmest Warmest since: 2017 2012
Ties: 1941
Sep 2019–Aug 2020
12-Month
53.3°F
(11.8°C)
51.7°F
(10.9°C)
1.6°F
(0.9°C)
109th Coolest Coolest since: 2019 1904
17th Warmest Warmest since: 2017 2012
Ties: 1955, 1983
Mar 2019–Aug 2020
18-Month
56.2°F
(13.4°C)
55.1°F
(12.8°C)
1.1°F
(0.6°C)
95th Coolest Coolest since: 2019 1904
31st Warmest Warmest since: 2018 2012
Ties: 1937, 1953, 1998
Sep 2018–Aug 2020
24-Month
52.6°F
(11.4°C)
51.7°F
(10.9°C)
0.9°F
(0.5°C)
97th Coolest Coolest since: 2019 1905
28th Warmest Warmest since: 2018 2017
Ties: 2001
Sep 2017–Aug 2020
36-Month
52.7°F
(11.5°C)
51.7°F
(10.9°C)
1.0°F
(0.6°C)
103rd Coolest Coolest since: 2016 1979
21st Warmest Warmest since: 2019 2018
Ties: 1989, 1992
Sep 2016–Aug 2020
48-Month
53.3°F
(11.8°C)
51.6°F
(10.9°C)
1.7°F
(0.9°C)
117th Coolest Coolest since: 2017 1905
6th Warmest Warmest since: 2019 2019
Ties: 2001, 2008, 2013
Sep 2015–Aug 2020
60-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
121st Coolest Coolest since: 2019 1906
1st Warmest Warmest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 26, 2021 from https://www.ncdc.noaa.gov/cag/