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


Illinois

Average Temperature Rankings, December 1998

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2018)
Warmest/Coolest
Since
Record
December 1998
1-Month
35.1°F
(1.7°C)
29.4°F
(-1.4°C)
5.7°F
(3.1°C)
107th Coolest Coolest since: 1997 1983
18th Warmest Warmest since: 1994 2015
Nov–Dec 1998
2-Month
40.4°F
(4.7°C)
35.2°F
(1.8°C)
5.2°F
(2.9°C)
116th Coolest Coolest since: 1997 1950
9th Warmest Warmest since: 1994 2015
Ties: 1923
Oct–Dec 1998
3-Month
45.8°F
(7.7°C)
41.7°F
(5.4°C)
4.1°F
(2.3°C)
119th Coolest Coolest since: 1997 1976
6th Warmest Warmest since: 1994 1931
Sep–Dec 1998
4-Month
52.0°F
(11.1°C)
47.7°F
(8.7°C)
4.3°F
(2.4°C)
121st Coolest Coolest since: 1997 1976
4th Warmest Warmest since: 1971 1931
Aug–Dec 1998
5-Month
56.6°F
(13.7°C)
52.9°F
(11.6°C)
3.7°F
(2.1°C)
121st Coolest Coolest since: 1997 1976
4th Warmest Warmest since: 1931 1931
Jul–Dec 1998
6-Month
59.7°F
(15.4°C)
56.6°F
(13.7°C)
3.1°F
(1.7°C)
121st Coolest Coolest since: 1997 1976
4th Warmest Warmest since: 1931 1931
Jun–Dec 1998
7-Month
61.5°F
(16.4°C)
58.8°F
(14.9°C)
2.7°F
(1.5°C)
121st Coolest Coolest since: 1997 1917
4th Warmest Warmest since: 1931 1931
May–Dec 1998
8-Month
62.2°F
(16.8°C)
59.2°F
(15.1°C)
3.0°F
(1.7°C)
123rd Coolest Coolest since: 1997 1917
2nd Warmest Warmest since: 1931 1931
Apr–Dec 1998
9-Month
61.1°F
(16.2°C)
58.3°F
(14.6°C)
2.8°F
(1.6°C)
121st Coolest Coolest since: 1997 1917
4th Warmest Warmest since: 1941 1931
Mar–Dec 1998
10-Month
59.1°F
(15.1°C)
56.5°F
(13.6°C)
2.6°F
(1.5°C)
120th Coolest Coolest since: 1997 1917
5th Warmest Warmest since: 1931 2012
Ties: 1931
Feb–Dec 1998
11-Month
57.3°F
(14.1°C)
54.0°F
(12.2°C)
3.3°F
(1.9°C)
123rd Coolest Coolest since: 1997 1917
2nd Warmest Warmest to Date 2012
Ties: 2016
Jan–Dec 1998
12-Month
55.2°F
(12.9°C)
51.6°F
(10.9°C)
3.6°F
(2.0°C)
123rd Coolest Coolest since: 1997 1917
2nd Warmest Warmest to Date 2012
Jul 1997–Dec 1998
18-Month
55.6°F
(13.1°C)
53.3°F
(11.8°C)
2.3°F
(1.3°C)
118th Coolest Coolest since: 1997 1904
6th Warmest Warmest since: 1931 2012
Ties: 1999
Jan 1997–Dec 1998
24-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
105th Coolest Coolest since: 1997 1904, 1979
19th Warmest Warmest since: 1991 2017
Ties: 1955, 1988, 2005
Jan 1996–Dec 1998
36-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
81st Coolest Coolest since: 1997 1905
42nd Warmest Warmest since: 1993 2017
Ties: 1936, 1953, 2014
Jan 1995–Dec 1998
48-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
74th Coolest Coolest since: 1997 1905
48th Warmest Warmest since: 1994 2001, 2018
Ties: 1947, 2016
Jan 1994–Dec 1998
60-Month
52.0°F
(11.1°C)
51.6°F
(10.9°C)
0.4°F
(0.2°C)
75th Coolest Coolest since: 1997 1905
46th Warmest Warmest since: 1995 2002
Ties: 1940, 1943, 1949, 1954, 1989, 1995

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2019, retrieved on December 6, 2019 from https://www.ncdc.noaa.gov/cag/