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


Illinois

Average Temperature Rankings, August 2015

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
August 2015
1-Month
71.9°F
(22.2°C)
73.4°F
(23.0°C)
-1.5°F
(-0.8°C)
32nd Coolest Coolest since: 2009 1915
95th Warmest Warmest since: 2014 1947
Ties: 1951
Jul–Aug 2015
2-Month
73.0°F
(22.8°C)
74.4°F
(23.6°C)
-1.4°F
(-0.8°C)
23rd Coolest Coolest since: 2014 1915
104th Warmest Warmest since: 2012 1936
Ties: 1945, 1996, 1997
Jun–Aug 2015
3-Month
72.6°F
(22.6°C)
73.5°F
(23.1°C)
-0.9°F
(-0.5°C)
36th Coolest Coolest since: 2014 1915
91st Warmest Warmest since: 2012 1936
Ties: 1969
May–Aug 2015
4-Month
70.7°F
(21.5°C)
70.7°F
(21.5°C)
0.0°F
(0.0°C)
63rd Coolest Coolest since: 2014 1915
64th Warmest Warmest since: 2012 1934, 1936
Ties: 1898
Apr–Aug 2015
5-Month
67.4°F
(19.7°C)
66.8°F
(19.3°C)
0.6°F
(0.4°C)
78th Coolest Coolest since: 2014 1907
49th Warmest Warmest since: 2012 1934
Ties: 1895, 1942, 1970
Mar–Aug 2015
6-Month
62.6°F
(17.0°C)
62.4°F
(16.9°C)
0.2°F
(0.1°C)
70th Coolest Coolest since: 2014 1904, 1950, 1960
57th Warmest Warmest since: 2012 2012
Ties: 1957, 1968, 1980
Feb–Aug 2015
7-Month
56.4°F
(13.6°C)
57.6°F
(14.2°C)
-1.2°F
(-0.6°C)
27th Coolest Coolest since: 2014 1904
100th Warmest Warmest since: 2013 2012
Ties: 2008
Jan–Aug 2015
8-Month
52.6°F
(11.4°C)
53.6°F
(12.0°C)
-1.0°F
(-0.6°C)
30th Coolest Coolest since: 2014 1904, 1912
97th Warmest Warmest since: 2013 2012
Ties: 1897, 1969, 1972
Dec 2014–Aug 2015
9-Month
50.5°F
(10.3°C)
50.9°F
(10.5°C)
-0.4°F
(-0.2°C)
47th Coolest Coolest since: 2014 1904
79th Warmest Warmest since: 2013 2012
Ties: 1897, 1906, 1977
Nov 2014–Aug 2015
10-Month
48.9°F
(9.4°C)
49.9°F
(9.9°C)
-1.0°F
(-0.5°C)
27th Coolest Coolest since: 2014 1904
99th Warmest Warmest since: 2013 2012
Ties: 1907, 1929
Oct 2014–Aug 2015
11-Month
49.4°F
(9.7°C)
50.3°F
(10.2°C)
-0.9°F
(-0.5°C)
28th Coolest Coolest since: 2014 1904
98th Warmest Warmest since: 2013 2012
Ties: 1994
Sep 2014–Aug 2015
12-Month
50.7°F
(10.4°C)
51.7°F
(10.9°C)
-1.0°F
(-0.5°C)
27th Coolest Coolest since: 2014 1904
99th Warmest Warmest since: 2013 2012
Ties: 1927, 1929
Mar 2014–Aug 2015
18-Month
54.2°F
(12.3°C)
55.2°F
(12.9°C)
-1.0°F
(-0.6°C)
17th Coolest Coolest since: 2014 1904
109th Warmest Warmest since: 2013 2012
Ties: 1902, 1910, 1920, 1968, 1977, 1994
Sep 2013–Aug 2015
24-Month
50.1°F
(10.1°C)
51.6°F
(10.9°C)
-1.5°F
(-0.8°C)
6th Coolest Coolest since: 1979 1905
119th Warmest Warmest since: 2014 2017
Sep 2012–Aug 2015
36-Month
50.6°F
(10.3°C)
51.6°F
(10.9°C)
-1.0°F
(-0.6°C)
8th Coolest Coolest since: 1980 1979
116th Warmest Warmest since: 2014 2018
Ties: 1912, 1917, 1919, 1970
Sep 2011–Aug 2015
48-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
74th Coolest Coolest since: 1998 1905
49th Warmest Warmest since: 2014 2019
Ties: 1974, 1975, 1994
Sep 2010–Aug 2015
60-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
77th Coolest Coolest since: 1998 1906
45th Warmest Warmest since: 2014 2020
Ties: 1937, 1939, 1945, 1976

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 20, 2020 from https://www.ncdc.noaa.gov/cag/