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 1998

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  • Record Warmest
Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1998
1-Month
67.4°F
(19.7°C)
62.1°F
(16.7°C)
5.3°F
(3.0°C)
116th Coolest Coolest since: 1997 1917
10th Warmest Warmest since: 1991 2018
Ties: 1982
Apr–May 1998
2-Month
60.0°F
(15.6°C)
56.8°F
(13.8°C)
3.2°F
(1.8°C)
114th Coolest Coolest since: 1997 1907
12th Warmest Warmest since: 1991 1896
Ties: 1962, 1965, 1986
Mar–May 1998
3-Month
53.5°F
(11.9°C)
51.1°F
(10.6°C)
2.4°F
(1.3°C)
107th Coolest Coolest since: 1997 1960
19th Warmest Warmest since: 1991 2012
Feb–May 1998
4-Month
50.2°F
(10.1°C)
45.7°F
(7.6°C)
4.5°F
(2.5°C)
120th Coolest Coolest since: 1997 1978
6th Warmest Warmest since: 1991 2012
Ties: 1977
Jan–May 1998
5-Month
46.5°F
(8.1°C)
41.6°F
(5.3°C)
4.9°F
(2.8°C)
122nd Coolest Coolest since: 1997 1978, 1979
4th Warmest Warmest since: 1921 2012
Dec 1997–May 1998
6-Month
44.1°F
(6.7°C)
39.6°F
(4.2°C)
4.5°F
(2.5°C)
122nd Coolest Coolest since: 1997 1978
3rd Warmest Warmest since: 1921 2012
Nov 1997–May 1998
7-Month
43.3°F
(6.3°C)
39.8°F
(4.3°C)
3.5°F
(2.0°C)
117th Coolest Coolest since: 1997 1904
8th Warmest Warmest since: 1991 2012
Ties: 1991
Oct 1997–May 1998
8-Month
44.7°F
(7.1°C)
41.6°F
(5.3°C)
3.1°F
(1.8°C)
117th Coolest Coolest since: 1997 1904, 1978
8th Warmest Warmest since: 1932 2012
Sep 1997–May 1998
9-Month
47.1°F
(8.4°C)
44.3°F
(6.8°C)
2.8°F
(1.6°C)
116th Coolest Coolest since: 1997 1904
9th Warmest Warmest since: 1991 2012
Ties: 1991
Aug 1997–May 1998
10-Month
49.5°F
(9.7°C)
47.2°F
(8.4°C)
2.3°F
(1.3°C)
114th Coolest Coolest since: 1997 1904
11th Warmest Warmest since: 1991 2012
Jul 1997–May 1998
11-Month
51.8°F
(11.0°C)
49.8°F
(9.9°C)
2.0°F
(1.1°C)
114th Coolest Coolest since: 1997 1904
11th Warmest Warmest since: 1991 2012
Ties: 1939, 1942, 1954, 1987
Jun 1997–May 1998
12-Month
53.4°F
(11.9°C)
51.6°F
(10.9°C)
1.8°F
(1.0°C)
109th Coolest Coolest since: 1997 1904
16th Warmest Warmest since: 1992 2012
Ties: 1922
Dec 1996–May 1998
18-Month
48.6°F
(9.2°C)
47.6°F
(8.7°C)
1.0°F
(0.5°C)
95th Coolest Coolest since: 1997 1979
29th Warmest Warmest since: 1992 2017
Ties: 1931, 1976, 2001
Jun 1996–May 1998
24-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
75th Coolest Coolest since: 1997 1905
49th Warmest Warmest since: 1993 2017
Ties: 1946, 1965, 1972, 1975, 1976, 1993
Jun 1995–May 1998
36-Month
51.5°F
(10.8°C)
51.6°F
(10.9°C)
-0.1°F
(-0.1°C)
53rd Coolest Coolest since: 1997 1979
70th Warmest Warmest since: 1994 2018
Ties: 1902, 1911, 1994
Jun 1994–May 1998
48-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
66th Coolest Coolest since: 1997 1980
56th Warmest Warmest since: 1995 2019
Ties: 1948, 1954, 1986, 1995, 2016
Jun 1993–May 1998
60-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
53rd Coolest Coolest since: 1997 1906, 1907, 1908, 1981
68th Warmest Warmest since: 1996 2002
Ties: 1926, 1947, 1953, 1977, 1996

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/