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


Illinois, Climate Division 8. Southwest

Average Temperature Rankings, May 2020

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
May 2020
1-Month
63.3°F
(17.4°C)
65.1°F
(18.4°C)
-1.8°F
(-1.0°C)
36th Coolest Coolest since: 2008 1917, 1924
91st Warmest Warmest since: 2019 2018
Ties: 1901
Apr–May 2020
2-Month
58.4°F
(14.7°C)
60.2°F
(15.7°C)
-1.8°F
(-1.0°C)
22nd Coolest Coolest since: 2008 1907
105th Warmest Warmest since: 2019 1896
Ties: 1909, 1931
Mar–May 2020
3-Month
55.5°F
(13.1°C)
55.0°F
(12.8°C)
0.5°F
(0.3°C)
71st Coolest Coolest since: 2019 1960
56th Warmest Warmest since: 2019 2012
Ties: 1953, 1957, 2018, 2019
Feb–May 2020
4-Month
51.0°F
(10.6°C)
50.0°F
(10.0°C)
1.0°F
(0.6°C)
84th Coolest Coolest since: 2019 1978
43rd Warmest Warmest since: 2019 2012
Ties: 1981, 1985, 2019
Jan–May 2020
5-Month
48.1°F
(8.9°C)
46.1°F
(7.8°C)
2.0°F
(1.1°C)
97th Coolest Coolest since: 2019 1978
30th Warmest Warmest since: 2017 2012
Dec 2019–May 2020
6-Month
46.8°F
(8.2°C)
44.3°F
(6.8°C)
2.5°F
(1.4°C)
113th Coolest Coolest since: 2019 1978
13th Warmest Warmest since: 2017 2012
Nov 2019–May 2020
7-Month
45.7°F
(7.6°C)
44.3°F
(6.8°C)
1.4°F
(0.8°C)
97th Coolest Coolest since: 2019 1978
29th Warmest Warmest since: 2017 2012
Ties: 1896, 1922, 1925
Oct 2019–May 2020
8-Month
47.2°F
(8.4°C)
46.0°F
(7.8°C)
1.2°F
(0.6°C)
94th Coolest Coolest since: 2019 1978
32nd Warmest Warmest since: 2017 2012
Ties: 1938, 1941
Sep 2019–May 2020
9-Month
50.3°F
(10.2°C)
48.5°F
(9.2°C)
1.8°F
(1.0°C)
108th Coolest Coolest since: 2019 1978
18th Warmest Warmest since: 2017 2012
Ties: 1954, 1992
Aug 2019–May 2020
10-Month
53.0°F
(11.7°C)
51.3°F
(10.7°C)
1.7°F
(1.0°C)
111th Coolest Coolest since: 2019 1978
15th Warmest Warmest since: 2017 2012
Ties: 1942, 1954, 1972, 1992
Jul 2019–May 2020
11-Month
55.3°F
(12.9°C)
53.7°F
(12.1°C)
1.6°F
(0.8°C)
110th Coolest Coolest since: 2019 1918
16th Warmest Warmest since: 2017 2012
Ties: 1992, 2004
Jun 2019–May 2020
12-Month
56.8°F
(13.8°C)
55.4°F
(13.0°C)
1.4°F
(0.8°C)
107th Coolest Coolest since: 2019 1904, 1918
19th Warmest Warmest since: 2017 2012
Ties: 1934, 1953, 1987, 2002
Dec 2018–May 2020
18-Month
53.2°F
(11.8°C)
51.7°F
(10.9°C)
1.5°F
(0.9°C)
107th Coolest Coolest since: 2019 1979
18th Warmest Warmest since: 2018 2017
Ties: 1935, 1942
Jun 2018–May 2020
24-Month
56.7°F
(13.7°C)
55.4°F
(13.0°C)
1.3°F
(0.7°C)
109th Coolest Coolest since: 2019 1905, 1978
16th Warmest Warmest since: 2018 2017
Ties: 1939
Jun 2017–May 2020
36-Month
56.5°F
(13.6°C)
55.3°F
(12.9°C)
1.2°F
(0.7°C)
104th Coolest Coolest since: 2016 1979
20th Warmest Warmest since: 2019 2018
Ties: 1957, 1992, 2002
Jun 2016–May 2020
48-Month
57.3°F
(14.1°C)
55.4°F
(13.0°C)
1.9°F
(1.1°C)
121st Coolest Coolest since: 2018 1980
2nd Warmest Warmest since: 2019 2019
Ties: 1935
Jun 2015–May 2020
60-Month
57.5°F
(14.2°C)
55.4°F
(13.0°C)
2.1°F
(1.2°C)
121st Coolest Coolest since: 2019 1979, 1980, 1981
1st Warmest Warmest to Date 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published February 2021, retrieved on March 4, 2021 from https://www.ncdc.noaa.gov/cag/