Climate at a Glance

Divisional 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 June 2020. For more information, please see Climatological Rankings.


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, April 1978

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
April 1978
1-Month
57.3°F
(14.1°C)
55.3°F
(12.9°C)
2.0°F
(1.2°C)
89th Coolest Coolest since: 1976 1907
38th Warmest Warmest since: 1977 1896
Ties: 1922
Mar–Apr 1978
2-Month
48.0°F
(8.9°C)
50.0°F
(10.0°C)
-2.0°F
(-1.1°C)
33rd Coolest Coolest since: 1975 1926, 1960
94th Warmest Warmest since: 1977 2012
Ties: 1923
Feb–Apr 1978
3-Month
39.2°F
(4.0°C)
44.9°F
(7.2°C)
-5.7°F
(-3.2°C)
2nd Coolest Coolest since: 1899 1899
125th Warmest Warmest since: 1977 2012
Jan–Apr 1978
4-Month
34.7°F
(1.5°C)
41.5°F
(5.3°C)
-6.8°F
(-3.8°C)
1st Coolest Coolest to Date 1978
126th Warmest Warmest since: 1977 2012
Dec 1977–Apr 1978
5-Month
34.1°F
(1.2°C)
40.0°F
(4.4°C)
-5.9°F
(-3.2°C)
1st Coolest Coolest to Date 1978
125th Warmest Warmest since: 1977 2012
Nov 1977–Apr 1978
6-Month
36.1°F
(2.3°C)
40.8°F
(4.9°C)
-4.7°F
(-2.6°C)
2nd Coolest Coolest since: 1912 1912
124th Warmest Warmest since: 1977 2012
Oct 1977–Apr 1978
7-Month
38.8°F
(3.8°C)
43.2°F
(6.2°C)
-4.4°F
(-2.4°C)
1st Coolest Coolest since: 1899 1899, 1978
125th Warmest Warmest since: 1977 2012
Ties: 1899
Sep 1977–Apr 1978
8-Month
42.8°F
(6.0°C)
46.5°F
(8.1°C)
-3.7°F
(-2.1°C)
2nd Coolest Coolest since: 1918 1918
124th Warmest Warmest since: 1977 2017
Aug 1977–Apr 1978
9-Month
46.4°F
(8.0°C)
49.7°F
(9.8°C)
-3.3°F
(-1.8°C)
2nd Coolest Coolest since: 1977 1918
124th Warmest Warmest since: 1977 2017
Ties: 1977
Jul 1977–Apr 1978
10-Month
49.8°F
(9.9°C)
52.6°F
(11.4°C)
-2.8°F
(-1.5°C)
4th Coolest Coolest since: 1977 1918
122nd Warmest Warmest since: 1976 2012
Jun 1977–Apr 1978
11-Month
52.0°F
(11.1°C)
54.5°F
(12.5°C)
-2.5°F
(-1.4°C)
5th Coolest Coolest since: 1977 1918
121st Warmest Warmest since: 1976 2012, 2017
May 1977–Apr 1978
12-Month
53.5°F
(11.9°C)
55.4°F
(13.0°C)
-1.9°F
(-1.1°C)
10th Coolest Coolest since: 1977 1918
116th Warmest Warmest since: 1976 2012, 2017
Ties: 1982
Nov 1976–Apr 1978
18-Month
48.3°F
(9.1°C)
50.5°F
(10.3°C)
-2.2°F
(-1.2°C)
4th Coolest Coolest since: 1918 1979
121st Warmest Warmest since: 1977 2017
May 1976–Apr 1978
24-Month
52.8°F
(11.6°C)
55.3°F
(12.9°C)
-2.5°F
(-1.3°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2017
May 1975–Apr 1978
36-Month
54.2°F
(12.3°C)
55.4°F
(13.0°C)
-1.2°F
(-0.7°C)
7th Coolest Coolest since: 1970 1979
117th Warmest Warmest since: 1977 2018
May 1974–Apr 1978
48-Month
54.2°F
(12.3°C)
55.3°F
(12.9°C)
-1.1°F
(-0.6°C)
7th Coolest Coolest since: 1971 1980
116th Warmest Warmest since: 1977 2019
Ties: 1970
May 1973–Apr 1978
60-Month
54.7°F
(12.6°C)
55.3°F
(12.9°C)
-0.6°F
(-0.3°C)
14th Coolest Coolest since: 1972 1980, 1981
108th Warmest Warmest since: 1977 2020
Ties: 1963, 1983

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published July 2020, retrieved on August 5, 2020 from https://www.ncdc.noaa.gov/cag/