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 December 2019. For more information, please see Climatological Rankings.


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, May 1978

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1978
1-Month
63.6°F
(17.6°C)
65.1°F
(18.4°C)
-1.5°F
(-0.8°C)
39th Coolest Coolest since: 1976 1917, 1924
87th Warmest Warmest since: 1977 2018
Ties: 1995
Apr–May 1978
2-Month
60.4°F
(15.8°C)
60.1°F
(15.6°C)
0.3°F
(0.2°C)
56th Coolest Coolest since: 1976 1907
70th Warmest Warmest since: 1977 1896
Ties: 1946, 1956, 1958
Mar–May 1978
3-Month
53.2°F
(11.8°C)
55.0°F
(12.8°C)
-1.8°F
(-1.0°C)
27th Coolest Coolest since: 1971 1960
99th Warmest Warmest since: 1977 2012
Ties: 2013
Feb–May 1978
4-Month
45.3°F
(7.4°C)
49.9°F
(9.9°C)
-4.6°F
(-2.5°C)
1st Coolest Coolest to Date 1978
125th Warmest Warmest since: 1977 2012
Jan–May 1978
5-Month
40.5°F
(4.7°C)
46.2°F
(7.9°C)
-5.7°F
(-3.2°C)
1st Coolest Coolest to Date 1978
125th Warmest Warmest since: 1977 2012
Dec 1977–May 1978
6-Month
39.0°F
(3.9°C)
44.2°F
(6.8°C)
-5.2°F
(-2.9°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2012
Nov 1977–May 1978
7-Month
40.0°F
(4.4°C)
44.3°F
(6.8°C)
-4.3°F
(-2.4°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2012
Oct 1977–May 1978
8-Month
41.9°F
(5.5°C)
46.0°F
(7.8°C)
-4.1°F
(-2.3°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2012
Sep 1977–May 1978
9-Month
45.1°F
(7.3°C)
48.5°F
(9.2°C)
-3.4°F
(-1.9°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2012
Aug 1977–May 1978
10-Month
48.2°F
(9.0°C)
51.3°F
(10.7°C)
-3.1°F
(-1.7°C)
1st Coolest Coolest to Date 1978
124th Warmest Warmest since: 1977 2012
Jul 1977–May 1978
11-Month
51.0°F
(10.6°C)
53.7°F
(12.1°C)
-2.7°F
(-1.5°C)
2nd Coolest Coolest since: 1918 1918
123rd Warmest Warmest since: 1977 2012
Jun 1977–May 1978
12-Month
53.0°F
(11.7°C)
55.4°F
(13.0°C)
-2.4°F
(-1.3°C)
3rd Coolest Coolest since: 1977 1904, 1918
122nd Warmest Warmest since: 1977 2012
Ties: 1977
Dec 1976–May 1978
18-Month
49.8°F
(9.9°C)
51.7°F
(10.9°C)
-1.9°F
(-1.0°C)
5th Coolest Coolest since: 1918 1979
119th Warmest Warmest since: 1977 2017
Ties: 1904
Jun 1976–May 1978
24-Month
53.0°F
(11.7°C)
55.4°F
(13.0°C)
-2.4°F
(-1.3°C)
1st Coolest Coolest since: 1905 1905, 1978
123rd Warmest Warmest since: 1977 2017
Ties: 1905
Jun 1975–May 1978
36-Month
54.1°F
(12.3°C)
55.4°F
(13.0°C)
-1.3°F
(-0.7°C)
7th Coolest Coolest since: 1970 1979
116th Warmest Warmest since: 1977 2018
Jun 1974–May 1978
48-Month
54.2°F
(12.3°C)
55.4°F
(13.0°C)
-1.2°F
(-0.7°C)
7th Coolest Coolest since: 1971 1980
115th Warmest Warmest since: 1977 2019
Ties: 1981
Jun 1973–May 1978
60-Month
54.7°F
(12.6°C)
55.3°F
(12.9°C)
-0.6°F
(-0.3°C)
16th Coolest Coolest since: 1972 1979, 1980, 1981
105th Warmest Warmest since: 1977 1935, 2019

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published January 2020, retrieved on January 25, 2020 from https://www.ncdc.noaa.gov/cag/