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 1991

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
June 1991
1-Month
76.5°F
(24.7°C)
73.9°F
(23.3°C)
2.6°F
(1.4°C)
109th Coolest
Coolest since:
1903
20th Warmest
Warmest since:
1952
May–Jun 1991
2-Month
73.6°F
(23.1°C)
69.4°F
(20.8°C)
4.2°F
(2.3°C)
125th Coolest
Coolest since:
1907
4th Warmest
Warmest since:
2018
Apr–Jun 1991
3-Month
68.8°F
(20.4°C)
64.7°F
(18.2°C)
4.1°F
(2.2°C)
127th Coolest
Coolest since:
1907
2nd Warmest
Warmest to Date
2010
Mar–Jun 1991
4-Month
63.8°F
(17.7°C)
59.7°F
(15.4°C)
4.1°F
(2.3°C)
127th Coolest
Coolest since:
1960
2nd Warmest
Warmest to Date
2012
Feb–Jun 1991
5-Month
59.0°F
(15.0°C)
54.8°F
(12.7°C)
4.2°F
(2.3°C)
127th Coolest
Coolest since:
1912, 1960, 1978
2nd Warmest
Warmest to Date
2012
Ties: 2017
Jan–Jun 1991
6-Month
54.0°F
(12.2°C)
50.8°F
(10.4°C)
3.2°F
(1.8°C)
123rd Coolest
Coolest since:
1912, 1978
6th Warmest
Warmest since:
2012
Ties: 1946
Dec 1990–Jun 1991
7-Month
51.3°F
(10.7°C)
48.4°F
(9.1°C)
2.9°F
(1.6°C)
120th Coolest
Coolest since:
1978
8th Warmest
Warmest since:
2012
Ties: 1953
Nov 1990–Jun 1991
8-Month
51.2°F
(10.7°C)
48.0°F
(8.9°C)
3.2°F
(1.8°C)
122nd Coolest
Coolest since:
1912
6th Warmest
Warmest since:
2012
Oct 1990–Jun 1991
9-Month
51.7°F
(10.9°C)
49.1°F
(9.5°C)
2.6°F
(1.4°C)
121st Coolest
Coolest since:
1912, 1978
7th Warmest
Warmest since:
2012
Sep 1990–Jun 1991
10-Month
53.6°F
(12.0°C)
51.1°F
(10.6°C)
2.5°F
(1.4°C)
120th Coolest
Coolest since:
1978
8th Warmest
Warmest since:
2012
Ties: 1999
Aug 1990–Jun 1991
11-Month
55.5°F
(13.1°C)
53.3°F
(11.8°C)
2.2°F
(1.3°C)
119th Coolest
Coolest since:
1904, 1978
9th Warmest
Warmest since:
2012
Jul 1990–Jun 1991
12-Month
57.3°F
(14.1°C)
55.4°F
(13.0°C)
1.9°F
(1.1°C)
119th Coolest
Coolest since:
1904, 1912, 1918, 1978
9th Warmest
Warmest since:
2012
Ties: 1939
Jan 1990–Jun 1991
18-Month
56.0°F
(13.3°C)
53.8°F
(12.1°C)
2.2°F
(1.2°C)
116th Coolest
Coolest since:
1979
12th Warmest
Warmest since:
2017
Jul 1989–Jun 1991
24-Month
56.4°F
(13.6°C)
55.3°F
(12.9°C)
1.1°F
(0.7°C)
101st Coolest
Coolest since:
1978, 1979
26th Warmest
Warmest since:
2017
Ties: 1956, 2019
Jul 1988–Jun 1991
36-Month
56.1°F
(13.4°C)
55.4°F
(13.0°C)
0.7°F
(0.4°C)
92nd Coolest
Coolest since:
1979
34th Warmest
Warmest since:
2018
Ties: 1944, 1987
Jul 1987–Jun 1991
48-Month
56.0°F
(13.3°C)
55.4°F
(13.0°C)
0.6°F
(0.3°C)
90th Coolest
Coolest since:
1980
35th Warmest
Warmest since:
2019
Ties: 1937, 1940, 1941, 1988, 1989, 2004, 2011
Jul 1986–Jun 1991
60-Month
56.1°F
(13.4°C)
55.3°F
(12.9°C)
0.8°F
(0.5°C)
94th Coolest
Coolest since:
1980
30th Warmest
Warmest since:
2020
Ties: 1923, 1925, 1938, 1939, 1941, 1958, 1992, 2005

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