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 2019

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 2019
1-Month
72.8°F
(22.7°C)
73.4°F
(23.0°C)
-0.6°F
(-0.3°C)
46th Coolest Coolest since: 2017 1915
81st Warmest Warmest since: 2018 1947
Ties: 1961, 1989, 2013, 2020
Jul–Aug 2019
2-Month
75.1°F
(23.9°C)
74.5°F
(23.6°C)
0.6°F
(0.3°C)
84th Coolest Coolest since: 2018 1915
43rd Warmest Warmest since: 2016 1936
Ties: 1998, 1999
Jun–Aug 2019
3-Month
73.7°F
(23.2°C)
73.5°F
(23.1°C)
0.2°F
(0.1°C)
72nd Coolest Coolest since: 2017 1915
55th Warmest Warmest since: 2018 1936
Ties: 1898, 1956, 1964
May–Aug 2019
4-Month
70.9°F
(21.6°C)
70.6°F
(21.4°C)
0.3°F
(0.2°C)
70th Coolest Coolest since: 2017 1915
57th Warmest Warmest since: 2018 1934, 1936
Ties: 1919, 1965, 1970
Apr–Aug 2019
5-Month
67.2°F
(19.6°C)
66.8°F
(19.3°C)
0.4°F
(0.3°C)
72nd Coolest Coolest since: 2014 1907
55th Warmest Warmest since: 2018 1934
Ties: 1906, 1919, 1948, 1983
Mar–Aug 2019
6-Month
62.2°F
(16.8°C)
62.3°F
(16.8°C)
-0.1°F
(0.0°C)
50th Coolest Coolest since: 2014 1904, 1950, 1960
77th Warmest Warmest since: 2018 2012
Ties: 1931, 1943, 1945, 1962, 1994
Feb–Aug 2019
7-Month
57.5°F
(14.2°C)
57.5°F
(14.2°C)
0.0°F
(0.0°C)
58th Coolest Coolest since: 2015 1904
69th Warmest Warmest since: 2018 2012
Ties: 1908, 1914, 1992
Jan–Aug 2019
8-Month
53.5°F
(11.9°C)
53.5°F
(11.9°C)
0.0°F
(0.0°C)
65th Coolest Coolest since: 2015 1904, 1912
62nd Warmest Warmest since: 2018 2012
Ties: 1909, 1975
Dec 2018–Aug 2019
9-Month
51.4°F
(10.8°C)
50.9°F
(10.5°C)
0.5°F
(0.3°C)
77th Coolest Coolest since: 2015 1904
49th Warmest Warmest since: 2018 2012
Ties: 1908, 1990
Nov 2018–Aug 2019
10-Month
49.8°F
(9.9°C)
49.9°F
(9.9°C)
-0.1°F
(0.0°C)
56th Coolest Coolest since: 2015 1904
70th Warmest Warmest since: 2018 2012
Ties: 1900, 1903
Oct 2018–Aug 2019
11-Month
50.2°F
(10.1°C)
50.3°F
(10.2°C)
-0.1°F
(-0.1°C)
50th Coolest Coolest since: 2015 1904
76th Warmest Warmest since: 2018 2012
Ties: 1908, 1950
Sep 2018–Aug 2019
12-Month
51.9°F
(11.1°C)
51.7°F
(10.9°C)
0.2°F
(0.2°C)
71st Coolest Coolest since: 2015 1904
55th Warmest Warmest since: 2018 2012
Ties: 1923, 1928, 1952, 1990
Mar 2018–Aug 2019
18-Month
55.7°F
(13.2°C)
55.2°F
(12.9°C)
0.5°F
(0.3°C)
82nd Coolest Coolest since: 2015 1904
44th Warmest Warmest since: 2018 2012
Ties: 1911, 1989, 2004
Sep 2017–Aug 2019
24-Month
52.4°F
(11.3°C)
51.7°F
(10.9°C)
0.7°F
(0.4°C)
94th Coolest Coolest since: 2015 1905
31st Warmest Warmest since: 2018 2017
Ties: 1921, 1923, 1943, 1949, 1953, 1956
Sep 2016–Aug 2019
36-Month
53.3°F
(11.8°C)
51.6°F
(10.9°C)
1.7°F
(0.9°C)
113th Coolest Coolest since: 2016 1979
11th Warmest Warmest since: 2018 2018
Sep 2015–Aug 2019
48-Month
53.8°F
(12.1°C)
51.6°F
(10.9°C)
2.2°F
(1.2°C)
122nd Coolest Coolest since: 2018 1905
1st Warmest Warmest to Date 2019
Sep 2014–Aug 2019
60-Month
53.2°F
(11.8°C)
51.6°F
(10.9°C)
1.6°F
(0.9°C)
119th Coolest Coolest since: 2018 1906
3rd Warmest Warmest since: 2006 2020
Ties: 2006

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/