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


Illinois

Average Temperature Rankings, April 1999

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
April 1999
1-Month
54.3°F
(12.4°C)
51.5°F
(10.8°C)
2.8°F
(1.6°C)
101st Coolest Coolest since: 1998 1907
25th Warmest Warmest since: 1991 2010
Ties: 2015
Mar–Apr 1999
2-Month
46.3°F
(7.9°C)
45.7°F
(7.6°C)
0.6°F
(0.3°C)
73rd Coolest Coolest since: 1997 1926
53rd Warmest Warmest since: 1998 2012
Ties: 2015
Feb–Apr 1999
3-Month
43.3°F
(6.3°C)
40.1°F
(4.5°C)
3.2°F
(1.8°C)
105th Coolest Coolest since: 1997 1978
21st Warmest Warmest since: 1998 2012
Jan–Apr 1999
4-Month
38.8°F
(3.8°C)
36.5°F
(2.5°C)
2.3°F
(1.3°C)
102nd Coolest Coolest since: 1997 1912
24th Warmest Warmest since: 1998 2012
Ties: 1945
Dec 1998–Apr 1999
5-Month
38.0°F
(3.3°C)
35.0°F
(1.7°C)
3.0°F
(1.6°C)
108th Coolest Coolest since: 1997 1978
17th Warmest Warmest since: 1998 2012
Ties: 1946
Nov 1998–Apr 1999
6-Month
39.3°F
(4.1°C)
36.0°F
(2.2°C)
3.3°F
(1.9°C)
114th Coolest Coolest since: 1998 1904
11th Warmest Warmest since: 1998 2012
Ties: 1998
Oct 1998–Apr 1999
7-Month
41.8°F
(5.4°C)
38.7°F
(3.7°C)
3.1°F
(1.7°C)
114th Coolest Coolest since: 1998 1904
11th Warmest Warmest since: 1976 2012
Sep 1998–Apr 1999
8-Month
45.4°F
(7.4°C)
42.1°F
(5.6°C)
3.3°F
(1.8°C)
118th Coolest Coolest since: 1998 1904
7th Warmest Warmest since: 1932 2017
Ties: 2000, 2002
Aug 1998–Apr 1999
9-Month
48.7°F
(9.3°C)
45.6°F
(7.6°C)
3.1°F
(1.7°C)
118th Coolest Coolest since: 1998 1904
7th Warmest Warmest since: 1932 2017
Ties: 2002
Jul 1998–Apr 1999
10-Month
51.4°F
(10.8°C)
48.7°F
(9.3°C)
2.7°F
(1.5°C)
119th Coolest Coolest since: 1998 1904
6th Warmest Warmest since: 1932 2012
Ties: 2002
Jun 1998–Apr 1999
11-Month
53.2°F
(11.8°C)
50.7°F
(10.4°C)
2.5°F
(1.4°C)
118th Coolest Coolest since: 1998 1904
7th Warmest Warmest since: 1954 2017
Ties: 2000
May 1998–Apr 1999
12-Month
54.4°F
(12.4°C)
51.6°F
(10.9°C)
2.8°F
(1.5°C)
120th Coolest Coolest since: 1998 1918
5th Warmest Warmest since: 1932 2012, 2017
Ties: 2006
Nov 1997–Apr 1999
18-Month
49.3°F
(9.6°C)
46.4°F
(8.0°C)
2.9°F
(1.6°C)
120th Coolest Coolest since: 1998 1905
4th Warmest Warmest to Date 2017
May 1997–Apr 1999
24-Month
53.5°F
(11.9°C)
51.6°F
(10.9°C)
1.9°F
(1.0°C)
115th Coolest Coolest since: 1998 1905
9th Warmest Warmest since: 1955 2017
Ties: 1922, 1954, 2007
May 1996–Apr 1999
36-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
99th Coolest Coolest since: 1998 1979
24th Warmest Warmest since: 1992 2018
Ties: 1954, 1957
May 1995–Apr 1999
48-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
82nd Coolest Coolest since: 1998 1980
40th Warmest Warmest since: 1993 2019
Ties: 1938, 1943, 1944, 1958, 1974, 1976, 2010
May 1994–Apr 1999
60-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
83rd Coolest Coolest since: 1998 1906
38th Warmest Warmest since: 1993 1935, 2002
Ties: 1924, 1943, 1945, 1946, 1976, 2011

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2020, retrieved on January 29, 2020 from https://www.ncdc.noaa.gov/cag/