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


Illinois

Average Temperature Rankings, August 1978

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
August 1978
1-Month
73.0°F
(22.8°C)
73.4°F
(23.0°C)
-0.4°F
(-0.2°C)
52nd Coolest Coolest since: 1977 1915
75th Warmest Warmest since: 1975 1947
Ties: 1921, 1923, 1969
Jul–Aug 1978
2-Month
74.0°F
(23.3°C)
74.4°F
(23.6°C)
-0.4°F
(-0.3°C)
49th Coolest Coolest since: 1976 1915
78th Warmest Warmest since: 1977 1936
Ties: 1898, 1964, 1984
Jun–Aug 1978
3-Month
73.4°F
(23.0°C)
73.5°F
(23.1°C)
-0.1°F
(-0.1°C)
57th Coolest Coolest since: 1977 1915
70th Warmest Warmest since: 1977 1936
Ties: 1948, 1966, 1977, 1986, 2001
May–Aug 1978
4-Month
70.2°F
(21.2°C)
70.6°F
(21.4°C)
-0.4°F
(-0.2°C)
48th Coolest Coolest since: 1976 1915
79th Warmest Warmest since: 1977 1934, 1936
Ties: 1902, 1973, 1982, 2014
Apr–Aug 1978
5-Month
66.7°F
(19.3°C)
66.8°F
(19.3°C)
-0.1°F
(0.0°C)
54th Coolest Coolest since: 1976 1907
73rd Warmest Warmest since: 1977 1934
Ties: 1969
Mar–Aug 1978
6-Month
61.2°F
(16.2°C)
62.3°F
(16.8°C)
-1.1°F
(-0.6°C)
25th Coolest Coolest since: 1971 1904, 1950, 1960
102nd Warmest Warmest since: 1977 2012
Ties: 1909, 1940, 1965, 1969, 1971, 1982
Feb–Aug 1978
7-Month
54.9°F
(12.7°C)
57.6°F
(14.2°C)
-2.7°F
(-1.5°C)
5th Coolest Coolest since: 1960 1904
122nd Warmest Warmest since: 1977 2012
Jan–Aug 1978
8-Month
50.0°F
(10.0°C)
53.6°F
(12.0°C)
-3.6°F
(-2.0°C)
4th Coolest Coolest since: 1912 1904, 1912
123rd Warmest Warmest since: 1977 2012
Dec 1977–Aug 1978
9-Month
47.3°F
(8.5°C)
50.9°F
(10.5°C)
-3.6°F
(-2.0°C)
2nd Coolest Coolest since: 1904 1904
124th Warmest Warmest since: 1977 2012
Nov 1977–Aug 1978
10-Month
46.8°F
(8.2°C)
49.9°F
(9.9°C)
-3.1°F
(-1.7°C)
3rd Coolest Coolest since: 1912 1904
123rd Warmest Warmest since: 1977 2012
Oct 1977–Aug 1978
11-Month
47.2°F
(8.4°C)
50.3°F
(10.2°C)
-3.1°F
(-1.8°C)
3rd Coolest Coolest since: 1912 1904
123rd Warmest Warmest since: 1977 2012
Sep 1977–Aug 1978
12-Month
48.9°F
(9.4°C)
51.6°F
(10.9°C)
-2.7°F
(-1.5°C)
3rd Coolest Coolest since: 1912 1904
123rd Warmest Warmest since: 1977 2012
Mar 1977–Aug 1978
18-Month
54.4°F
(12.4°C)
55.2°F
(12.9°C)
-0.8°F
(-0.5°C)
28th Coolest Coolest since: 1977 1904
98th Warmest Warmest since: 1976 2012
Ties: 1962, 1967
Sep 1976–Aug 1978
24-Month
49.5°F
(9.7°C)
51.7°F
(10.9°C)
-2.2°F
(-1.2°C)
3rd Coolest Coolest since: 1918 1905
122nd Warmest Warmest since: 1977 2017
Ties: 1918
Sep 1975–Aug 1978
36-Month
50.5°F
(10.3°C)
51.6°F
(10.9°C)
-1.1°F
(-0.6°C)
7th Coolest Coolest since: 1918 1979
117th Warmest Warmest since: 1977 2018
Sep 1974–Aug 1978
48-Month
50.7°F
(10.4°C)
51.6°F
(10.9°C)
-0.9°F
(-0.5°C)
10th Coolest Coolest since: 1970 1905
113th Warmest Warmest since: 1977 2019
Ties: 1963, 1970, 1982
Sep 1973–Aug 1978
60-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
21st Coolest Coolest since: 1972 1906
101st Warmest Warmest since: 1977 2020
Ties: 1912, 1929, 1930, 1964, 1972, 1997

Citing This Page

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