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


Illinois, Climate Division 1. Northwest

Average Temperature Rankings, May 1991

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Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1991
1-Month
65.9°F
(18.8°C)
59.7°F
(15.4°C)
6.2°F
(3.4°C)
121st Coolest Coolest since: 1990 1907
5th Warmest Warmest since: 1977 1977
Apr–May 1991
2-Month
59.2°F
(15.1°C)
54.1°F
(12.3°C)
5.1°F
(2.8°C)
123rd Coolest Coolest since: 1990 1907
3rd Warmest Warmest since: 1977 1977
Ties: 2010
Mar–May 1991
3-Month
52.6°F
(11.4°C)
47.8°F
(8.8°C)
4.8°F
(2.6°C)
120th Coolest Coolest since: 1990 1960
6th Warmest Warmest since: 1987 2012
Ties: 1985
Feb–May 1991
4-Month
46.8°F
(8.2°C)
41.9°F
(5.5°C)
4.9°F
(2.7°C)
119th Coolest Coolest since: 1990 1947
7th Warmest Warmest since: 1987 2012
Jan–May 1991
5-Month
40.9°F
(4.9°C)
37.5°F
(3.1°C)
3.4°F
(1.8°C)
113th Coolest Coolest since: 1989 1912
13th Warmest Warmest since: 1990 2012
Dec 1990–May 1991
6-Month
38.1°F
(3.4°C)
35.4°F
(1.9°C)
2.7°F
(1.5°C)
109th Coolest Coolest since: 1990 1979
16th Warmest Warmest since: 1987 2012
Ties: 1896
Nov 1990–May 1991
7-Month
38.8°F
(3.8°C)
35.7°F
(2.1°C)
3.1°F
(1.7°C)
112th Coolest Coolest since: 1990 1904
13th Warmest Warmest since: 1987 2012
Ties: 2004
Oct 1990–May 1991
8-Month
40.2°F
(4.6°C)
37.7°F
(3.2°C)
2.5°F
(1.4°C)
110th Coolest Coolest since: 1990 1912
15th Warmest Warmest since: 1987 2012
Sep 1990–May 1991
9-Month
43.0°F
(6.1°C)
40.6°F
(4.8°C)
2.4°F
(1.3°C)
112th Coolest Coolest since: 1990 1904
13th Warmest Warmest since: 1987 2012
Ties: 1942
Aug 1990–May 1991
10-Month
45.8°F
(7.7°C)
43.6°F
(6.4°C)
2.2°F
(1.3°C)
111th Coolest Coolest since: 1990 1904
14th Warmest Warmest since: 1987 2012
Ties: 1939
Jul 1990–May 1991
11-Month
48.2°F
(9.0°C)
46.3°F
(7.9°C)
1.9°F
(1.1°C)
109th Coolest Coolest since: 1990 1904
16th Warmest Warmest since: 1987 2012
Jun 1990–May 1991
12-Month
50.0°F
(10.0°C)
48.2°F
(9.0°C)
1.8°F
(1.0°C)
110th Coolest Coolest since: 1990 1904
15th Warmest Warmest since: 1987 2012
Ties: 1922, 1934, 1939, 2004
Dec 1989–May 1991
18-Month
45.6°F
(7.6°C)
43.9°F
(6.6°C)
1.7°F
(1.0°C)
105th Coolest Coolest since: 1990 1918
19th Warmest Warmest since: 1988 2017
Ties: 1934, 1955, 1987
Jun 1989–May 1991
24-Month
49.3°F
(9.6°C)
48.2°F
(9.0°C)
1.1°F
(0.6°C)
99th Coolest Coolest since: 1990 1905
25th Warmest Warmest since: 1988 2017
Ties: 1934, 2008
Jun 1988–May 1991
36-Month
49.3°F
(9.6°C)
48.2°F
(9.0°C)
1.1°F
(0.6°C)
98th Coolest Coolest since: 1990 1905, 1918, 1979
25th Warmest Warmest since: 1989 2000
Ties: 1935, 2003, 2014
Jun 1987–May 1991
48-Month
49.2°F
(9.6°C)
48.1°F
(8.9°C)
1.1°F
(0.7°C)
96th Coolest Coolest since: 1989 1980
26th Warmest Warmest since: 1990 2001, 2002, 2007
Ties: 1941, 2017
Jun 1986–May 1991
60-Month
49.5°F
(9.7°C)
48.1°F
(8.9°C)
1.4°F
(0.8°C)
110th Coolest Coolest since: 1990 1907, 1908
11th Warmest Warmest since: 1935 2002
Ties: 1934, 2005, 2009, 2012

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published September 2019, retrieved on September 19, 2019 from https://www.ncdc.noaa.gov/cag/