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 February 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, August 1899

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
August 1899
1-Month
75.5°F
(24.2°C)
73.4°F
(23.0°C)
2.1°F
(1.2°C)
106th Coolest Coolest since: 1898 1915
21st Warmest Warmest to Date 1947
Jul–Aug 1899
2-Month
75.0°F
(23.9°C)
74.5°F
(23.6°C)
0.5°F
(0.3°C)
80th Coolest Coolest since: 1898 1915
47th Warmest Warmest to Date 1936
Ties: 1940, 2003
Jun–Aug 1899
3-Month
74.2°F
(23.4°C)
73.5°F
(23.1°C)
0.7°F
(0.3°C)
87th Coolest Coolest since: 1898 1915
40th Warmest Warmest to Date 1936
Ties: 1918, 1925, 1937, 1938, 1984, 1999
May–Aug 1899
4-Month
71.4°F
(21.9°C)
70.6°F
(21.4°C)
0.8°F
(0.5°C)
82nd Coolest Coolest since: 1898 1915
45th Warmest Warmest since: 1896 1934, 1936
Ties: 1916, 1937, 2006
Apr–Aug 1899
5-Month
67.7°F
(19.8°C)
66.8°F
(19.3°C)
0.9°F
(0.5°C)
87th Coolest Coolest since: 1898 1907
40th Warmest Warmest since: 1896 1934
Ties: 1925, 1953
Mar–Aug 1899
6-Month
61.9°F
(16.6°C)
62.3°F
(16.8°C)
-0.4°F
(-0.2°C)
40th Coolest Coolest since: 1897 1904, 1950, 1960
87th Warmest Warmest since: 1898 2012
Ties: 1935, 1993, 2009
Feb–Aug 1899
7-Month
55.6°F
(13.1°C)
57.5°F
(14.2°C)
-1.9°F
(-1.1°C)
12th Coolest Coolest to Date 1904
115th Warmest Warmest since: 1898 2012
Ties: 1907
Jan–Aug 1899
8-Month
51.8°F
(11.0°C)
53.5°F
(11.9°C)
-1.7°F
(-0.9°C)
15th Coolest Coolest since: 1895 1904, 1912
112th Warmest Warmest since: 1898 2012
Dec 1898–Aug 1899
9-Month
48.9°F
(9.4°C)
50.9°F
(10.5°C)
-2.0°F
(-1.1°C)
10th Coolest Coolest to Date 1904
116th Warmest Warmest since: 1898 2012
Ties: 1951, 1984
Nov 1898–Aug 1899
10-Month
47.7°F
(8.7°C)
49.9°F
(9.9°C)
-2.2°F
(-1.2°C)
8th Coolest Coolest to Date 1904
118th Warmest Warmest since: 1898 2012
Ties: 1917
Oct 1898–Aug 1899
11-Month
48.0°F
(8.9°C)
50.3°F
(10.2°C)
-2.3°F
(-1.3°C)
6th Coolest Coolest to Date 1904
120th Warmest Warmest since: 1898 2012
Sep 1898–Aug 1899
12-Month
49.7°F
(9.8°C)
51.6°F
(10.9°C)
-1.9°F
(-1.1°C)
8th Coolest Coolest to Date 1904
118th Warmest Warmest since: 1898 2012
Ties: 1982
Mar 1898–Aug 1899
18-Month
53.9°F
(12.2°C)
55.1°F
(12.8°C)
-1.2°F
(-0.6°C)
11th Coolest Coolest to Date 1904
115th Warmest Warmest since: 1898 2012
Ties: 1924, 1961, 1970
Sep 1897–Aug 1899
24-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
30th Coolest Coolest to Date 1905
95th Warmest Warmest since: 1898 2017
Ties: 1907, 1916, 1919, 1924, 1925
Sep 1896–Aug 1899
36-Month
50.9°F
(10.5°C)
51.6°F
(10.9°C)
-0.7°F
(-0.4°C)
20th Coolest Coolest to Date 1979
104th Warmest Warmest since: 1898 2018
Ties: 1928, 1952, 1963
Sep 1895–Aug 1899
48-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
30th Coolest Coolest to Date 1905
93rd Warmest Warmest to Date 2019
Ties: 1917, 1928, 1960, 1972, 1996

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published March 2021, retrieved on March 9, 2021 from https://www.ncdc.noaa.gov/cag/