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


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, May 1987

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
May 1987
1-Month
71.3°F
(21.8°C)
65.1°F
(18.4°C)
6.2°F
(3.4°C)
124th Coolest Coolest since: 1986 1917, 1924
3rd Warmest Warmest since: 1962 2018
Apr–May 1987
2-Month
63.5°F
(17.5°C)
60.2°F
(15.7°C)
3.3°F
(1.8°C)
116th Coolest Coolest since: 1986 1907
11th Warmest Warmest since: 1977 1896
Mar–May 1987
3-Month
58.4°F
(14.7°C)
55.0°F
(12.8°C)
3.4°F
(1.9°C)
117th Coolest Coolest since: 1986 1960
10th Warmest Warmest since: 1977 2012
Feb–May 1987
4-Month
53.5°F
(11.9°C)
50.0°F
(10.0°C)
3.5°F
(1.9°C)
118th Coolest Coolest since: 1986 1978
9th Warmest Warmest since: 1977 2012
Jan–May 1987
5-Month
49.0°F
(9.4°C)
46.2°F
(7.9°C)
2.8°F
(1.5°C)
116th Coolest Coolest since: 1986 1978
11th Warmest Warmest since: 1946 2012
Dec 1986–May 1987
6-Month
46.6°F
(8.1°C)
44.3°F
(6.8°C)
2.3°F
(1.3°C)
111th Coolest Coolest since: 1986 1978
15th Warmest Warmest since: 1938 2012
Ties: 1999
Nov 1986–May 1987
7-Month
45.9°F
(7.7°C)
44.3°F
(6.8°C)
1.6°F
(0.9°C)
102nd Coolest Coolest since: 1986 1978
24th Warmest Warmest since: 1976 2012
Ties: 1919, 1967
Oct 1986–May 1987
8-Month
47.4°F
(8.6°C)
45.9°F
(7.7°C)
1.5°F
(0.9°C)
100th Coolest Coolest since: 1986 1978
26th Warmest Warmest since: 1986 2012
Ties: 1942, 1946, 1986
Sep 1986–May 1987
9-Month
50.2°F
(10.1°C)
48.6°F
(9.2°C)
1.6°F
(0.9°C)
105th Coolest Coolest since: 1986 1978
21st Warmest Warmest since: 1974 2012
Aug 1986–May 1987
10-Month
52.4°F
(11.3°C)
51.3°F
(10.7°C)
1.1°F
(0.6°C)
96th Coolest Coolest since: 1986 1978
30th Warmest Warmest since: 1976 2012
Jul 1986–May 1987
11-Month
55.0°F
(12.8°C)
53.7°F
(12.1°C)
1.3°F
(0.7°C)
103rd Coolest Coolest since: 1986 1918
23rd Warmest Warmest since: 1974 2012
Ties: 1972
Jun 1986–May 1987
12-Month
56.8°F
(13.8°C)
55.4°F
(13.0°C)
1.4°F
(0.8°C)
107th Coolest Coolest since: 1986 1904, 1918
19th Warmest Warmest since: 1974 2012
Ties: 1934, 1953, 2002, 2020
Dec 1985–May 1987
18-Month
52.9°F
(11.6°C)
51.6°F
(10.9°C)
1.3°F
(0.7°C)
100th Coolest Coolest since: 1986 1979
25th Warmest Warmest since: 1955 2017
Jun 1985–May 1987
24-Month
56.3°F
(13.5°C)
55.4°F
(13.0°C)
0.9°F
(0.5°C)
97th Coolest Coolest since: 1986 1905, 1978
28th Warmest Warmest since: 1956 2017
Ties: 1988, 1991, 2003
Jun 1984–May 1987
36-Month
56.1°F
(13.4°C)
55.4°F
(13.0°C)
0.7°F
(0.4°C)
92nd Coolest Coolest since: 1986 1979
32nd Warmest Warmest since: 1974 2018
Ties: 1988, 1989, 1991
Jun 1983–May 1987
48-Month
55.7°F
(13.2°C)
55.3°F
(12.9°C)
0.4°F
(0.3°C)
72nd Coolest Coolest since: 1986 1980
51st Warmest Warmest since: 1975 2019
Ties: 1943, 1954, 1975, 1994
Jun 1982–May 1987
60-Month
55.6°F
(13.1°C)
55.4°F
(13.0°C)
0.2°F
(0.1°C)
68th Coolest Coolest since: 1986 1979, 1980, 1981
54th Warmest Warmest since: 1976 2020
Ties: 1926, 1940, 1948, 1949, 1950, 1994

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published April 2021, retrieved on April 18, 2021 from https://www.ncdc.noaa.gov/cag/