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, August 2010

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
August 2010
1-Month
79.6°F
(26.4°C)
76.0°F
(24.4°C)
3.6°F
(2.0°C)
117th Coolest
Coolest since:
1915
12th Warmest
Warmest since:
1936
Jul–Aug 2010
2-Month
79.8°F
(26.6°C)
76.9°F
(24.9°C)
2.9°F
(1.7°C)
118th Coolest
Coolest since:
1967
11th Warmest
Warmest since:
1936
Jun–Aug 2010
3-Month
79.5°F
(26.4°C)
75.9°F
(24.4°C)
3.6°F
(2.0°C)
124th Coolest
Coolest since:
1915, 1927
5th Warmest
Warmest since:
1936
May–Aug 2010
4-Month
76.5°F
(24.7°C)
73.2°F
(22.9°C)
3.3°F
(1.8°C)
125th Coolest
Coolest since:
1967
4th Warmest
Warmest since:
1936
Ties: 2018
Apr–Aug 2010
5-Month
73.5°F
(23.1°C)
69.6°F
(20.9°C)
3.9°F
(2.2°C)
128th Coolest
Coolest since:
1907
1st Warmest
Warmest to Date
2010
Mar–Aug 2010
6-Month
69.1°F
(20.6°C)
65.5°F
(18.6°C)
3.6°F
(2.0°C)
127th Coolest
Coolest since:
1904
2nd Warmest
Warmest to Date
2012
Feb–Aug 2010
7-Month
63.6°F
(17.6°C)
61.1°F
(16.2°C)
2.5°F
(1.4°C)
120th Coolest
Coolest since:
1904
9th Warmest
Warmest since:
2012
Ties: 1930
Jan–Aug 2010
8-Month
59.0°F
(15.0°C)
57.3°F
(14.1°C)
1.7°F
(0.9°C)
103rd Coolest
Coolest since:
1912
26th Warmest
Warmest since:
2012
Dec 2009–Aug 2010
9-Month
56.2°F
(13.4°C)
54.8°F
(12.7°C)
1.4°F
(0.7°C)
103rd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
2012
Ties: 1914, 1941
Nov 2009–Aug 2010
10-Month
55.7°F
(13.2°C)
53.8°F
(12.1°C)
1.9°F
(1.1°C)
111th Coolest
Coolest since:
1904
17th Warmest
Warmest since:
2012
Oct 2009–Aug 2010
11-Month
55.4°F
(13.0°C)
54.1°F
(12.3°C)
1.3°F
(0.7°C)
103rd Coolest
Coolest since:
1904
25th Warmest
Warmest since:
2012
Ties: 1955, 1957
Sep 2009–Aug 2010
12-Month
56.5°F
(13.6°C)
55.3°F
(12.9°C)
1.2°F
(0.7°C)
100th Coolest
Coolest since:
1904
28th Warmest
Warmest since:
2012
Ties: 1942, 1957, 1974, 2011
Mar 2009–Aug 2010
18-Month
59.5°F
(15.3°C)
58.7°F
(14.8°C)
0.8°F
(0.5°C)
91st Coolest
Coolest since:
1904
37th Warmest
Warmest since:
2012
Ties: 1909, 1923, 1957, 1964, 1995
Sep 2008–Aug 2010
24-Month
55.9°F
(13.3°C)
55.4°F
(13.0°C)
0.5°F
(0.3°C)
87th Coolest
Coolest since:
1979
40th Warmest
Warmest since:
2017
Ties: 1957, 1973
Sep 2007–Aug 2010
36-Month
55.9°F
(13.3°C)
55.3°F
(12.9°C)
0.6°F
(0.4°C)
85th Coolest
Coolest since:
1979
41st Warmest
Warmest since:
2018
Ties: 1941, 1944, 1989, 2016
Sep 2006–Aug 2010
48-Month
56.2°F
(13.4°C)
55.4°F
(13.0°C)
0.8°F
(0.4°C)
100th Coolest
Coolest since:
1980
25th Warmest
Warmest since:
2019
Ties: 1922, 1936, 2003
Sep 2005–Aug 2010
60-Month
56.5°F
(13.6°C)
55.4°F
(13.0°C)
1.1°F
(0.6°C)
106th Coolest
Coolest since:
1906
18th Warmest
Warmest since:
2020
Ties: 2003, 2016

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