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 2021

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
June 2021
1-Month
76.0°F
(24.4°C)
73.9°F
(23.3°C)
2.1°F
(1.1°C)
98th Coolest
Coolest since:
1903
31st Warmest
Warmest since:
1952
May–Jun 2021
2-Month
69.9°F
(21.1°C)
69.5°F
(20.8°C)
0.4°F
(0.3°C)
73rd Coolest
Coolest since:
1907
56th Warmest
Warmest since:
2018
Ties: 1895, 1970, 2001
Apr–Jun 2021
3-Month
65.1°F
(18.4°C)
64.8°F
(18.2°C)
0.3°F
(0.2°C)
62nd Coolest
Coolest since:
1907
67th Warmest
Warmest since:
2010
Ties: 1938
Mar–Jun 2021
4-Month
61.6°F
(16.4°C)
59.8°F
(15.4°C)
1.8°F
(1.0°C)
111th Coolest
Coolest since:
1960
18th Warmest
Warmest since:
2012
Ties: 1911, 1922, 1953, 1963, 1964, 2022
Feb–Jun 2021
5-Month
54.6°F
(12.6°C)
54.8°F
(12.7°C)
-0.2°F
(-0.1°C)
56th Coolest
Coolest since:
1912, 1960, 1978
73rd Warmest
Warmest since:
2012
Ties: 1909, 1965
Jan–Jun 2021
6-Month
51.2°F
(10.7°C)
50.8°F
(10.4°C)
0.4°F
(0.3°C)
71st Coolest
Coolest since:
1912, 1978
58th Warmest
Warmest since:
2012
Ties: 1942, 1943, 1950, 1956, 1995
Dec 2020–Jun 2021
7-Month
49.2°F
(9.6°C)
48.5°F
(9.2°C)
0.7°F
(0.4°C)
75th Coolest
Coolest since:
1978
53rd Warmest
Warmest since:
2012
Ties: 1974, 1990
Nov 2020–Jun 2021
8-Month
49.3°F
(9.6°C)
48.0°F
(8.9°C)
1.3°F
(0.7°C)
94th Coolest
Coolest since:
1912
34th Warmest
Warmest since:
2012
Ties: 1949
Oct 2020–Jun 2021
9-Month
50.0°F
(10.0°C)
49.1°F
(9.5°C)
0.9°F
(0.5°C)
88th Coolest
Coolest since:
1912, 1978
40th Warmest
Warmest since:
2012
Ties: 1898, 1911, 1938, 1955, 2010
Sep 2020–Jun 2021
10-Month
51.9°F
(11.1°C)
51.1°F
(10.6°C)
0.8°F
(0.5°C)
87th Coolest
Coolest since:
1978
41st Warmest
Warmest since:
2012
Ties: 2008, 2010
Aug 2020–Jun 2021
11-Month
53.9°F
(12.2°C)
53.3°F
(11.8°C)
0.6°F
(0.4°C)
77th Coolest
Coolest since:
1904, 1978
51st Warmest
Warmest since:
2012
Ties: 1923, 1931, 1933, 1935, 1952, 2010
Jul 2020–Jun 2021
12-Month
56.1°F
(13.4°C)
55.4°F
(13.0°C)
0.7°F
(0.4°C)
83rd Coolest
Coolest since:
1904, 1912, 1918, 1978
45th Warmest
Warmest since:
2012
Ties: 1933, 1976
Jan 2020–Jun 2021
18-Month
54.9°F
(12.7°C)
53.8°F
(12.1°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1979
28th Warmest
Warmest since:
2017
Ties: 1935, 1974, 1988
Jul 2019–Jun 2021
24-Month
56.5°F
(13.6°C)
55.4°F
(13.0°C)
1.1°F
(0.6°C)
105th Coolest
Coolest since:
1978, 1979
22nd Warmest
Warmest since:
2017
Ties: 1934, 1987, 2016
Jul 2018–Jun 2021
36-Month
56.4°F
(13.6°C)
55.3°F
(12.9°C)
1.1°F
(0.7°C)
101st Coolest
Coolest since:
1979
25th Warmest
Warmest since:
2018
Ties: 1957, 2004
Jul 2017–Jun 2021
48-Month
56.4°F
(13.6°C)
55.3°F
(12.9°C)
1.1°F
(0.7°C)
103rd Coolest
Coolest since:
1980
22nd Warmest
Warmest since:
2019
Ties: 2005
Jul 2016–Jun 2021
60-Month
57.0°F
(13.9°C)
55.4°F
(13.0°C)
1.6°F
(0.9°C)
122nd Coolest
Coolest since:
1980
2nd Warmest
Warmest since:
2020
Ties: 1935, 2019

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