Climate at a Glance

Statewide 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

Average Temperature Rankings, May 1991

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  • Record Warmest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1991
1-Month
68.6°F
(20.3°C)
62.1°F
(16.7°C)
6.5°F
(3.6°C)
121st Coolest Coolest since: 1990 1917
5th Warmest Warmest since: 1977 2018
Apr–May 1991
2-Month
62.3°F
(16.8°C)
56.8°F
(13.8°C)
5.5°F
(3.0°C)
123rd Coolest Coolest since: 1990 1907
3rd Warmest Warmest since: 1977 1896
Mar–May 1991
3-Month
56.2°F
(13.4°C)
51.2°F
(10.7°C)
5.0°F
(2.7°C)
123rd Coolest Coolest since: 1990 1960
3rd Warmest Warmest since: 1977 2012
Feb–May 1991
4-Month
50.7°F
(10.4°C)
45.7°F
(7.6°C)
5.0°F
(2.8°C)
124th Coolest Coolest since: 1990 1978
2nd Warmest Warmest to Date 2012
Ties: 2017
Jan–May 1991
5-Month
45.2°F
(7.3°C)
41.6°F
(5.3°C)
3.6°F
(2.0°C)
117th Coolest Coolest since: 1989 1978, 1979
9th Warmest Warmest since: 1990 2012
Ties: 1938, 1946
Dec 1990–May 1991
6-Month
42.7°F
(5.9°C)
39.6°F
(4.2°C)
3.1°F
(1.7°C)
115th Coolest Coolest since: 1990 1978
10th Warmest Warmest since: 1987 2012
Ties: 2006
Nov 1990–May 1991
7-Month
43.3°F
(6.3°C)
39.7°F
(4.3°C)
3.6°F
(2.0°C)
117th Coolest Coolest since: 1990 1904
8th Warmest Warmest since: 1932 2012
Ties: 1998
Oct 1990–May 1991
8-Month
44.5°F
(6.9°C)
41.6°F
(5.3°C)
2.9°F
(1.6°C)
115th Coolest Coolest since: 1990 1904, 1978
10th Warmest Warmest since: 1932 2012
Ties: 2006
Sep 1990–May 1991
9-Month
47.1°F
(8.4°C)
44.4°F
(6.9°C)
2.7°F
(1.5°C)
116th Coolest Coolest since: 1990 1904
9th Warmest Warmest since: 1932 2012
Ties: 1998
Aug 1990–May 1991
10-Month
49.6°F
(9.8°C)
47.2°F
(8.4°C)
2.4°F
(1.4°C)
115th Coolest Coolest since: 1990 1904
10th Warmest Warmest since: 1932 2012
Jul 1990–May 1991
11-Month
51.9°F
(11.1°C)
49.9°F
(9.9°C)
2.0°F
(1.2°C)
115th Coolest Coolest since: 1990 1904
10th Warmest Warmest since: 1932 2012
Jun 1990–May 1991
12-Month
53.5°F
(11.9°C)
51.6°F
(10.9°C)
1.9°F
(1.0°C)
113th Coolest Coolest since: 1990 1904
12th Warmest Warmest since: 1987 2012
Ties: 1942, 1987, 1992
Dec 1989–May 1991
18-Month
49.3°F
(9.6°C)
47.6°F
(8.7°C)
1.7°F
(0.9°C)
107th Coolest Coolest since: 1990 1979
17th Warmest Warmest since: 1988 2017
Ties: 1988
Jun 1989–May 1991
24-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
103rd Coolest Coolest since: 1990 1905
21st Warmest Warmest since: 1988 2017
Ties: 1956, 2001, 2008
Jun 1988–May 1991
36-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
97th Coolest Coolest since: 1990 1979
26th Warmest Warmest since: 1989 2018
Ties: 1999, 2005
Jun 1987–May 1991
48-Month
52.5°F
(11.4°C)
51.6°F
(10.9°C)
0.9°F
(0.5°C)
97th Coolest Coolest since: 1990 1980
25th Warmest Warmest since: 1990 2019
Ties: 1923, 1942, 1988, 1990, 2004
Jun 1986–May 1991
60-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
107th Coolest Coolest since: 1990 1906, 1907, 1908, 1981
14th Warmest Warmest since: 1957 2002
Ties: 1992, 2001, 2016

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2019, retrieved on September 17, 2019 from https://www.ncdc.noaa.gov/cag/