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 3. West

Average Temperature Rankings, April 2009

View Period (Months):
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  • Record Coolest
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  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 2009
1-Month
50.5°F
(10.3°C)
51.3°F
(10.7°C)
-0.8°F
(-0.4°C)
47th Coolest
Coolest since:
2018
82nd Warmest
Warmest since:
2010
Ties: 1943, 1972, 2008
Mar–Apr 2009
2-Month
46.2°F
(7.9°C)
45.2°F
(7.3°C)
1.0°F
(0.6°C)
79th Coolest
Coolest since:
1960
50th Warmest
Warmest since:
2012
Ties: 1895
Feb–Apr 2009
3-Month
41.5°F
(5.3°C)
39.5°F
(4.2°C)
2.0°F
(1.1°C)
100th Coolest
Coolest since:
1899
29th Warmest
Warmest since:
2012
Ties: 2010
Jan–Apr 2009
4-Month
36.0°F
(2.2°C)
35.6°F
(2.0°C)
0.4°F
(0.2°C)
73rd Coolest
Coolest since:
1912
56th Warmest
Warmest since:
2012
Ties: 1903, 1968
Dec 2008–Apr 2009
5-Month
33.7°F
(0.9°C)
34.2°F
(1.2°C)
-0.5°F
(-0.3°C)
49th Coolest
Coolest since:
1978
79th Warmest
Warmest since:
2012
Ties: 1997, 2015
Nov 2008–Apr 2009
6-Month
35.0°F
(1.7°C)
35.2°F
(1.8°C)
-0.2°F
(-0.1°C)
56th Coolest
Coolest since:
1904, 1912, 1978
72nd Warmest
Warmest since:
2012
Ties: 1961
Oct 2008–Apr 2009
7-Month
37.6°F
(3.1°C)
37.9°F
(3.3°C)
-0.3°F
(-0.2°C)
45th Coolest
Coolest since:
1912
83rd Warmest
Warmest since:
2012
Ties: 1901, 1924, 1986
Sep 2008–Apr 2009
8-Month
41.1°F
(5.1°C)
41.4°F
(5.2°C)
-0.3°F
(-0.1°C)
45th Coolest
Coolest since:
1904, 1978
83rd Warmest
Warmest since:
2017
Ties: 1906
Aug 2008–Apr 2009
9-Month
44.5°F
(6.9°C)
45.0°F
(7.2°C)
-0.5°F
(-0.3°C)
42nd Coolest
Coolest since:
1978
86th Warmest
Warmest since:
2017
Ties: 1929, 1971
Jul 2008–Apr 2009
10-Month
47.5°F
(8.6°C)
48.2°F
(9.0°C)
-0.7°F
(-0.4°C)
40th Coolest
Coolest since:
1904
88th Warmest
Warmest since:
2012
Ties: 1943
Jun 2008–Apr 2009
11-Month
49.7°F
(9.8°C)
50.2°F
(10.1°C)
-0.5°F
(-0.3°C)
41st Coolest
Coolest since:
1904
87th Warmest
Warmest since:
2017
Ties: 1930, 1940, 1943, 1971
May 2008–Apr 2009
12-Month
50.5°F
(10.3°C)
51.3°F
(10.7°C)
-0.8°F
(-0.4°C)
29th Coolest
Coolest since:
1918
99th Warmest
Warmest since:
2017
Ties: 1911, 1929, 1930, 1958
Nov 2007–Apr 2009
18-Month
45.2°F
(7.3°C)
45.9°F
(7.7°C)
-0.7°F
(-0.4°C)
30th Coolest
Coolest since:
1979
97th Warmest
Warmest since:
2017
Ties: 1917, 1930, 1944, 1968, 1969
May 2007–Apr 2009
24-Month
51.4°F
(10.8°C)
51.3°F
(10.7°C)
0.1°F
(0.1°C)
69th Coolest
Coolest since:
1905
58th Warmest
Warmest since:
2017
Ties: 1897, 1898, 1910, 1964, 1965, 1967
May 2006–Apr 2009
36-Month
51.6°F
(10.9°C)
51.2°F
(10.7°C)
0.4°F
(0.2°C)
76th Coolest
Coolest since:
1979
50th Warmest
Warmest since:
2018
Ties: 1974, 1993
May 2005–Apr 2009
48-Month
52.2°F
(11.2°C)
51.2°F
(10.7°C)
1.0°F
(0.5°C)
101st Coolest
Coolest since:
1980
24th Warmest
Warmest since:
1935
Ties: 1923, 1932, 2003
May 2004–Apr 2009
60-Month
52.2°F
(11.2°C)
51.2°F
(10.7°C)
1.0°F
(0.5°C)
107th Coolest
Coolest since:
1906, 1979
17th Warmest
Warmest since:
1935
Ties: 1936, 1958, 2004

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