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 7. East Southeast

Average Temperature Rankings, September 1959

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1959
1-Month
69.0°F
(20.6°C)
67.4°F
(19.7°C)
1.6°F
(0.9°C)
84th Coolest
Coolest since:
1918
45th Warmest
Warmest since:
1925
Ties: 1953
Aug–Sep 1959
2-Month
73.2°F
(22.9°C)
70.8°F
(21.6°C)
2.4°F
(1.3°C)
109th Coolest
Coolest since:
1967
20th Warmest
Warmest since:
1936
Ties: 2010, 2019
Jul–Sep 1959
3-Month
74.0°F
(23.3°C)
72.6°F
(22.6°C)
1.4°F
(0.7°C)
100th Coolest
Coolest since:
1967
29th Warmest
Warmest since:
1936
Jun–Sep 1959
4-Month
73.9°F
(23.3°C)
72.6°F
(22.6°C)
1.3°F
(0.7°C)
99th Coolest
Coolest since:
1967
30th Warmest
Warmest since:
1936
Ties: 1900, 1987, 2019, 2021
May–Sep 1959
5-Month
72.6°F
(22.6°C)
70.7°F
(21.5°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1924
20th Warmest
Warmest since:
1936
Apr–Sep 1959
6-Month
69.4°F
(20.8°C)
67.7°F
(19.8°C)
1.7°F
(1.0°C)
105th Coolest
Coolest since:
1907
24th Warmest
Warmest since:
2010
Ties: 2016
Mar–Sep 1959
7-Month
65.5°F
(18.6°C)
64.0°F
(17.8°C)
1.5°F
(0.8°C)
110th Coolest
Coolest since:
1924
19th Warmest
Warmest since:
2012
Ties: 2005, 2011, 2021
Feb–Sep 1959
8-Month
61.4°F
(16.3°C)
59.9°F
(15.5°C)
1.5°F
(0.8°C)
103rd Coolest
Coolest since:
1904, 1924
26th Warmest
Warmest since:
2012
Jan–Sep 1959
9-Month
57.3°F
(14.1°C)
56.3°F
(13.5°C)
1.0°F
(0.6°C)
89th Coolest
Coolest since:
1979
40th Warmest
Warmest since:
2012
Ties: 1913, 1983
Dec 1958–Sep 1959
10-Month
54.2°F
(12.3°C)
53.9°F
(12.2°C)
0.3°F
(0.1°C)
70th Coolest
Coolest since:
1904
58th Warmest
Warmest since:
2012
Nov 1958–Sep 1959
11-Month
53.3°F
(11.8°C)
52.8°F
(11.6°C)
0.5°F
(0.2°C)
75th Coolest
Coolest since:
1904
53rd Warmest
Warmest since:
2012
Ties: 1896, 1908, 1973, 1992
Oct 1958–Sep 1959
12-Month
53.5°F
(11.9°C)
53.1°F
(11.7°C)
0.4°F
(0.2°C)
74th Coolest
Coolest since:
1904
54th Warmest
Warmest since:
2012
Ties: 1900, 1930, 1974
Apr 1958–Sep 1959
18-Month
57.9°F
(14.4°C)
58.0°F
(14.4°C)
-0.1°F
(0.0°C)
51st Coolest
Coolest since:
1918
77th Warmest
Warmest since:
2012
Ties: 1897, 1915, 1930, 1952, 1985
Oct 1957–Sep 1959
24-Month
52.5°F
(11.4°C)
53.1°F
(11.7°C)
-0.6°F
(-0.3°C)
33rd Coolest
Coolest since:
1979
94th Warmest
Warmest since:
2017
Ties: 1897, 1916, 1929, 1952, 1967
Oct 1956–Sep 1959
36-Month
53.0°F
(11.7°C)
53.0°F
(11.7°C)
0.0°F
(0.0°C)
53rd Coolest
Coolest since:
1979
73rd Warmest
Warmest since:
2018
Ties: 1898, 1911, 1925, 1986, 1998
Oct 1955–Sep 1959
48-Month
52.9°F
(11.6°C)
53.0°F
(11.7°C)
-0.1°F
(-0.1°C)
45th Coolest
Coolest since:
1980
80th Warmest
Warmest since:
2019
Ties: 1901, 1951, 1967, 1973, 1983
Oct 1954–Sep 1959
60-Month
53.2°F
(11.8°C)
53.0°F
(11.7°C)
0.2°F
(0.1°C)
58th Coolest
Coolest since:
1982
66th Warmest
Warmest since:
2020
Ties: 1940, 1947, 1948, 1975, 1998

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