Divisional Rankings

Divisional Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois, Climate Division 8. Southwest

Average Temperature Rankings, April 2004

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  • Record Coolest
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  • Top 1/3
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 2004
1-Month
56.9°F
(13.8°C)
55.3°F
(12.9°C)
1.6°F
(0.9°C)
82nd Coolest
Coolest since:
1907
47th Warmest
Warmest since:
1896
Mar–Apr 2004
2-Month
53.4°F
(11.9°C)
49.9°F
(9.9°C)
3.5°F
(2.0°C)
109th Coolest
Coolest since:
1926, 1960
20th Warmest
Warmest since:
2012
Ties: 1981, 1986
Feb–Apr 2004
3-Month
47.3°F
(8.5°C)
45.0°F
(7.2°C)
2.3°F
(1.3°C)
102nd Coolest
Coolest since:
1899
27th Warmest
Warmest since:
2012
Ties: 1955, 2011
Jan–Apr 2004
4-Month
43.2°F
(6.2°C)
41.4°F
(5.2°C)
1.8°F
(1.0°C)
94th Coolest
Coolest since:
1978
35th Warmest
Warmest since:
2012
Ties: 1973
Dec 2003–Apr 2004
5-Month
42.2°F
(5.7°C)
40.1°F
(4.5°C)
2.1°F
(1.2°C)
104th Coolest
Coolest since:
1978
24th Warmest
Warmest since:
2012
Ties: 2022
Nov 2003–Apr 2004
6-Month
43.4°F
(6.3°C)
40.9°F
(4.9°C)
2.5°F
(1.4°C)
112th Coolest
Coolest since:
1912
16th Warmest
Warmest since:
2012
Ties: 1995
Oct 2003–Apr 2004
7-Month
45.4°F
(7.4°C)
43.2°F
(6.2°C)
2.2°F
(1.2°C)
109th Coolest
Coolest since:
1899, 1978
19th Warmest
Warmest since:
2012
Ties: 1991, 2022
Sep 2003–Apr 2004
8-Month
48.0°F
(8.9°C)
46.5°F
(8.1°C)
1.5°F
(0.8°C)
104th Coolest
Coolest since:
1918
24th Warmest
Warmest since:
2017
Ties: 1925, 1998
Aug 2003–Apr 2004
9-Month
51.3°F
(10.7°C)
49.7°F
(9.8°C)
1.6°F
(0.9°C)
104th Coolest
Coolest since:
1918
24th Warmest
Warmest since:
2017
Ties: 1919
Jul 2003–Apr 2004
10-Month
54.0°F
(12.2°C)
52.6°F
(11.4°C)
1.4°F
(0.8°C)
107th Coolest
Coolest since:
1918
21st Warmest
Warmest since:
2012
Ties: 1991
Jun 2003–Apr 2004
11-Month
55.4°F
(13.0°C)
54.6°F
(12.6°C)
0.8°F
(0.4°C)
90th Coolest
Coolest since:
1918
38th Warmest
Warmest since:
2012, 2017
Ties: 1898, 1923, 1946, 1987, 2013
May 2003–Apr 2004
12-Month
56.1°F
(13.4°C)
55.4°F
(13.0°C)
0.7°F
(0.4°C)
86th Coolest
Coolest since:
1918
42nd Warmest
Warmest since:
2012, 2017
Ties: 1909, 1915, 1995
Nov 2002–Apr 2004
18-Month
50.9°F
(10.5°C)
50.6°F
(10.3°C)
0.3°F
(0.2°C)
76th Coolest
Coolest since:
1979
51st Warmest
Warmest since:
2017
Ties: 1938, 1943, 1967, 1981, 1986, 1990, 1995
May 2002–Apr 2004
24-Month
55.9°F
(13.3°C)
55.4°F
(13.0°C)
0.5°F
(0.3°C)
86th Coolest
Coolest since:
1978
41st Warmest
Warmest since:
2017
Ties: 1953, 1991
May 2001–Apr 2004
36-Month
56.3°F
(13.5°C)
55.4°F
(13.0°C)
0.9°F
(0.5°C)
99th Coolest
Coolest since:
1979
27th Warmest
Warmest since:
2018
May 2000–Apr 2004
48-Month
56.0°F
(13.3°C)
55.4°F
(13.0°C)
0.6°F
(0.3°C)
87th Coolest
Coolest since:
1980
38th Warmest
Warmest since:
2019
Ties: 1990, 1991
May 1999–Apr 2004
60-Month
56.3°F
(13.5°C)
55.3°F
(12.9°C)
1.0°F
(0.6°C)
102nd Coolest
Coolest since:
1980, 1981
22nd Warmest
Warmest since:
2020
Ties: 1923, 1992, 2001, 2010

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