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 1981

View Period (Months):
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  • Record Coolest
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1981
1-Month
62.2°F
(16.8°C)
55.3°F
(12.9°C)
6.9°F
(3.9°C)
127th Coolest
Coolest since:
1907
2nd Warmest
Warmest since:
1896
Mar–Apr 1981
2-Month
53.4°F
(11.9°C)
50.0°F
(10.0°C)
3.4°F
(1.9°C)
109th Coolest
Coolest since:
1926, 1960
20th Warmest
Warmest since:
2012
Ties: 1986, 2004
Feb–Apr 1981
3-Month
47.9°F
(8.8°C)
44.9°F
(7.2°C)
3.0°F
(1.6°C)
112th Coolest
Coolest since:
1899
17th Warmest
Warmest since:
2012
Jan–Apr 1981
4-Month
43.4°F
(6.3°C)
41.4°F
(5.2°C)
2.0°F
(1.1°C)
99th Coolest
Coolest since:
1978
30th Warmest
Warmest since:
2012
Ties: 1911, 1919, 1945, 1987
Dec 1980–Apr 1981
5-Month
41.9°F
(5.5°C)
40.1°F
(4.5°C)
1.8°F
(1.0°C)
100th Coolest
Coolest since:
1978
28th Warmest
Warmest since:
2012
Nov 1980–Apr 1981
6-Month
42.2°F
(5.7°C)
40.8°F
(4.9°C)
1.4°F
(0.8°C)
95th Coolest
Coolest since:
1912
33rd Warmest
Warmest since:
2012
Ties: 1990
Oct 1980–Apr 1981
7-Month
44.0°F
(6.7°C)
43.2°F
(6.2°C)
0.8°F
(0.5°C)
84th Coolest
Coolest since:
1899, 1978
44th Warmest
Warmest since:
2012
Ties: 1964, 1987, 2008
Sep 1980–Apr 1981
8-Month
47.4°F
(8.6°C)
46.4°F
(8.0°C)
1.0°F
(0.6°C)
90th Coolest
Coolest since:
1918
38th Warmest
Warmest since:
2017
Ties: 1923, 2007, 2019, 2021
Aug 1980–Apr 1981
9-Month
51.2°F
(10.7°C)
49.8°F
(9.9°C)
1.4°F
(0.8°C)
102nd Coolest
Coolest since:
1918
26th Warmest
Warmest since:
2017
Ties: 1925, 1935, 1938, 1957
Jul 1980–Apr 1981
10-Month
54.3°F
(12.4°C)
52.6°F
(11.4°C)
1.7°F
(1.0°C)
110th Coolest
Coolest since:
1918
18th Warmest
Warmest since:
2012
Ties: 2022
Jun 1980–Apr 1981
11-Month
56.1°F
(13.4°C)
54.5°F
(12.5°C)
1.6°F
(0.9°C)
109th Coolest
Coolest since:
1918
19th Warmest
Warmest since:
2012, 2017
May 1980–Apr 1981
12-Month
56.8°F
(13.8°C)
55.4°F
(13.0°C)
1.4°F
(0.8°C)
107th Coolest
Coolest since:
1918
21st Warmest
Warmest since:
2012, 2017
Ties: 1919, 1921, 1922, 2011
Nov 1979–Apr 1981
18-Month
50.9°F
(10.5°C)
50.5°F
(10.3°C)
0.4°F
(0.2°C)
76th Coolest
Coolest since:
1979
51st Warmest
Warmest since:
2017
Ties: 1938, 1943, 1967, 1986, 1990, 1995, 2004
May 1979–Apr 1981
24-Month
55.4°F
(13.0°C)
55.4°F
(13.0°C)
0.0°F
(0.0°C)
54th Coolest
Coolest since:
1978
73rd Warmest
Warmest since:
2017
Ties: 1897, 1909, 1916, 1947, 1965
May 1978–Apr 1981
36-Month
54.7°F
(12.6°C)
55.3°F
(12.9°C)
-0.6°F
(-0.3°C)
22nd Coolest
Coolest since:
1979
104th Warmest
Warmest since:
2018
May 1977–Apr 1981
48-Month
54.4°F
(12.4°C)
55.3°F
(12.9°C)
-0.9°F
(-0.5°C)
9th Coolest
Coolest since:
1980
116th Warmest
Warmest since:
2019
Ties: 1918, 1982
May 1976–Apr 1981
60-Month
54.0°F
(12.2°C)
55.4°F
(13.0°C)
-1.4°F
(-0.8°C)
1st Coolest
Coolest since:
1980, 1981
123rd Warmest
Warmest since:
2020
Ties: 1980

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