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, June 2015

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
June 2015
1-Month
75.5°F
(24.2°C)
73.9°F
(23.3°C)
1.6°F
(0.9°C)
94th Coolest
Coolest since:
1903
35th Warmest
Warmest since:
1952
Ties: 1898, 2020
May–Jun 2015
2-Month
71.4°F
(21.9°C)
69.5°F
(20.8°C)
1.9°F
(1.1°C)
100th Coolest
Coolest since:
1907
29th Warmest
Warmest since:
2018
Apr–Jun 2015
3-Month
67.1°F
(19.5°C)
64.8°F
(18.2°C)
2.3°F
(1.3°C)
116th Coolest
Coolest since:
1907
13th Warmest
Warmest since:
2010
Ties: 1914
Mar–Jun 2015
4-Month
61.2°F
(16.2°C)
59.7°F
(15.4°C)
1.5°F
(0.8°C)
98th Coolest
Coolest since:
1960
31st Warmest
Warmest since:
2012
Ties: 1896, 1959, 1967, 2000, 2018
Feb–Jun 2015
5-Month
54.2°F
(12.3°C)
54.8°F
(12.7°C)
-0.6°F
(-0.4°C)
51st Coolest
Coolest since:
1912, 1960, 1978
78th Warmest
Warmest since:
2012
Ties: 1905
Jan–Jun 2015
6-Month
50.4°F
(10.2°C)
50.8°F
(10.4°C)
-0.4°F
(-0.2°C)
51st Coolest
Coolest since:
1912, 1978
78th Warmest
Warmest since:
2012
Ties: 2008
Dec 2014–Jun 2015
7-Month
48.7°F
(9.3°C)
48.5°F
(9.2°C)
0.2°F
(0.1°C)
66th Coolest
Coolest since:
1978
62nd Warmest
Warmest since:
2012
Ties: 1973, 1975, 1988
Nov 2014–Jun 2015
8-Month
47.4°F
(8.6°C)
48.0°F
(8.9°C)
-0.6°F
(-0.3°C)
39th Coolest
Coolest since:
1912
89th Warmest
Warmest since:
2012
Ties: 1907, 1945, 1947
Oct 2014–Jun 2015
9-Month
48.6°F
(9.2°C)
49.1°F
(9.5°C)
-0.5°F
(-0.3°C)
44th Coolest
Coolest since:
1912, 1978
84th Warmest
Warmest since:
2012
Ties: 1945, 1989
Sep 2014–Jun 2015
10-Month
50.5°F
(10.3°C)
51.1°F
(10.6°C)
-0.6°F
(-0.3°C)
39th Coolest
Coolest since:
1978
89th Warmest
Warmest since:
2012
Ties: 1975
Aug 2014–Jun 2015
11-Month
52.9°F
(11.6°C)
53.3°F
(11.8°C)
-0.4°F
(-0.2°C)
40th Coolest
Coolest since:
1904, 1978
88th Warmest
Warmest since:
2012
Ties: 1973, 2003
Jul 2014–Jun 2015
12-Month
54.6°F
(12.6°C)
55.4°F
(13.0°C)
-0.8°F
(-0.4°C)
28th Coolest
Coolest since:
1904, 1912, 1918, 1978
100th Warmest
Warmest since:
2012
Ties: 1928, 1929, 1961
Jan 2014–Jun 2015
18-Month
52.7°F
(11.5°C)
53.8°F
(12.1°C)
-1.1°F
(-0.6°C)
12th Coolest
Coolest since:
1979
116th Warmest
Warmest since:
2017
Ties: 1899, 1900, 1969
Jul 2013–Jun 2015
24-Month
54.3°F
(12.4°C)
55.4°F
(13.0°C)
-1.1°F
(-0.6°C)
12th Coolest
Coolest since:
1978, 1979
115th Warmest
Warmest since:
2017
Ties: 1961
Jul 2012–Jun 2015
36-Month
54.9°F
(12.7°C)
55.3°F
(12.9°C)
-0.4°F
(-0.2°C)
28th Coolest
Coolest since:
1979
98th Warmest
Warmest since:
2018
Ties: 1900, 1908, 1917, 1928, 1951, 1952, 1997
Jul 2011–Jun 2015
48-Month
56.1°F
(13.4°C)
55.3°F
(12.9°C)
0.8°F
(0.5°C)
96th Coolest
Coolest since:
1980
29th Warmest
Warmest since:
2019
Ties: 1923, 1924, 1939, 1944, 2010
Jul 2010–Jun 2015
60-Month
56.2°F
(13.4°C)
55.4°F
(13.0°C)
0.8°F
(0.4°C)
100th Coolest
Coolest since:
1980
24th Warmest
Warmest since:
2020
Ties: 1933, 1942, 2000, 2001, 2011

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