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 1979

View Period (Months):
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  • Record Coolest
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  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
April 1979
1-Month
53.6°F
(12.0°C)
55.3°F
(12.9°C)
-1.7°F
(-0.9°C)
29th Coolest
Coolest since:
1907
100th Warmest
Warmest since:
1896
Ties: 1911, 1917, 1956, 1973
Mar–Apr 1979
2-Month
49.0°F
(9.4°C)
50.0°F
(10.0°C)
-1.0°F
(-0.6°C)
45th Coolest
Coolest since:
1926, 1960
84th Warmest
Warmest since:
2012
Ties: 1915, 1961, 1982
Feb–Apr 1979
3-Month
40.7°F
(4.8°C)
45.0°F
(7.2°C)
-4.3°F
(-2.4°C)
8th Coolest
Coolest since:
1899
121st Warmest
Warmest since:
2012
Jan–Apr 1979
4-Month
35.2°F
(1.8°C)
41.5°F
(5.3°C)
-6.3°F
(-3.5°C)
3rd Coolest
Coolest since:
1978
126th Warmest
Warmest since:
2012
Dec 1978–Apr 1979
5-Month
35.1°F
(1.7°C)
40.0°F
(4.4°C)
-4.9°F
(-2.7°C)
2nd Coolest
Coolest since:
1978
126th Warmest
Warmest since:
2012
Nov 1978–Apr 1979
6-Month
37.2°F
(2.9°C)
40.9°F
(4.9°C)
-3.7°F
(-2.0°C)
7th Coolest
Coolest since:
1912
121st Warmest
Warmest since:
2012
Ties: 1936
Oct 1978–Apr 1979
7-Month
39.7°F
(4.3°C)
43.3°F
(6.3°C)
-3.6°F
(-2.0°C)
6th Coolest
Coolest since:
1899, 1978
122nd Warmest
Warmest since:
2012
Sep 1978–Apr 1979
8-Month
43.7°F
(6.5°C)
46.5°F
(8.1°C)
-2.8°F
(-1.6°C)
7th Coolest
Coolest since:
1918
121st Warmest
Warmest since:
2017
Ties: 1936
Aug 1978–Apr 1979
9-Month
47.2°F
(8.4°C)
49.7°F
(9.8°C)
-2.5°F
(-1.4°C)
7th Coolest
Coolest since:
1918
121st Warmest
Warmest since:
2017
Jul 1978–Apr 1979
10-Month
50.3°F
(10.2°C)
52.5°F
(11.4°C)
-2.2°F
(-1.2°C)
8th Coolest
Coolest since:
1918
120th Warmest
Warmest since:
2012
Ties: 1905, 1968
Jun 1978–Apr 1979
11-Month
52.5°F
(11.4°C)
54.5°F
(12.5°C)
-2.0°F
(-1.1°C)
11th Coolest
Coolest since:
1918
117th Warmest
Warmest since:
2012, 2017
May 1978–Apr 1979
12-Month
53.4°F
(11.9°C)
55.4°F
(13.0°C)
-2.0°F
(-1.1°C)
8th Coolest
Coolest since:
1918
120th Warmest
Warmest since:
2012, 2017
Ties: 1951
Nov 1977–Apr 1979
18-Month
47.6°F
(8.7°C)
50.5°F
(10.3°C)
-2.9°F
(-1.6°C)
1st Coolest
Coolest since:
1979
126th Warmest
Warmest since:
2017
May 1977–Apr 1979
24-Month
53.4°F
(11.9°C)
55.3°F
(12.9°C)
-1.9°F
(-1.0°C)
3rd Coolest
Coolest since:
1978
124th Warmest
Warmest since:
2017
May 1976–Apr 1979
36-Month
53.0°F
(11.7°C)
55.3°F
(12.9°C)
-2.3°F
(-1.2°C)
1st Coolest
Coolest since:
1979
125th Warmest
Warmest since:
2018
May 1975–Apr 1979
48-Month
54.0°F
(12.2°C)
55.3°F
(12.9°C)
-1.3°F
(-0.7°C)
2nd Coolest
Coolest since:
1980
123rd Warmest
Warmest since:
2019
Ties: 1905
May 1974–Apr 1979
60-Month
54.1°F
(12.3°C)
55.4°F
(13.0°C)
-1.3°F
(-0.7°C)
3rd Coolest
Coolest since:
1980, 1981
121st Warmest
Warmest since:
2020

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