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 1917

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
August 1917
1-Month
73.4°F
(23.0°C)
76.0°F
(24.4°C)
-2.6°F
(-1.4°C)
15th Coolest
Coolest since:
1915
114th Warmest
Warmest since:
1936
Jul–Aug 1917
2-Month
75.0°F
(23.9°C)
77.0°F
(25.0°C)
-2.0°F
(-1.1°C)
16th Coolest
Coolest since:
1967
113th Warmest
Warmest since:
1936
Ties: 1905, 1946
Jun–Aug 1917
3-Month
73.8°F
(23.2°C)
75.9°F
(24.4°C)
-2.1°F
(-1.2°C)
10th Coolest
Coolest since:
1915, 1927
119th Warmest
Warmest since:
1936
Ties: 1903, 1912, 1982
May–Aug 1917
4-Month
70.1°F
(21.2°C)
73.2°F
(22.9°C)
-3.1°F
(-1.7°C)
2nd Coolest
Coolest since:
1967
127th Warmest
Warmest since:
1936
Ties: 1915, 1927
Apr–Aug 1917
5-Month
66.8°F
(19.3°C)
69.7°F
(20.9°C)
-2.9°F
(-1.6°C)
4th Coolest
Coolest since:
1907
125th Warmest
Warmest since:
2010
Mar–Aug 1917
6-Month
63.3°F
(17.4°C)
65.5°F
(18.6°C)
-2.2°F
(-1.2°C)
6th Coolest
Coolest since:
1904
123rd Warmest
Warmest since:
2012
Feb–Aug 1917
7-Month
58.7°F
(14.8°C)
61.1°F
(16.2°C)
-2.4°F
(-1.4°C)
6th Coolest
Coolest since:
1904
123rd Warmest
Warmest since:
2012
Ties: 1979
Jan–Aug 1917
8-Month
55.6°F
(13.1°C)
57.3°F
(14.1°C)
-1.7°F
(-1.0°C)
14th Coolest
Coolest since:
1912
115th Warmest
Warmest since:
2012
Ties: 1905
Dec 1916–Aug 1917
9-Month
53.0°F
(11.7°C)
54.8°F
(12.7°C)
-1.8°F
(-1.0°C)
12th Coolest
Coolest since:
1904
116th Warmest
Warmest since:
2012
Ties: 1902, 1910
Nov 1916–Aug 1917
10-Month
52.4°F
(11.3°C)
53.8°F
(12.1°C)
-1.4°F
(-0.8°C)
19th Coolest
Coolest since:
1904
109th Warmest
Warmest since:
2012
Ties: 1918, 1963
Oct 1916–Aug 1917
11-Month
52.8°F
(11.6°C)
54.1°F
(12.3°C)
-1.3°F
(-0.7°C)
21st Coolest
Coolest since:
1904
107th Warmest
Warmest since:
2012
Ties: 1951, 1961
Sep 1916–Aug 1917
12-Month
54.0°F
(12.2°C)
55.4°F
(13.0°C)
-1.4°F
(-0.8°C)
15th Coolest
Coolest since:
1904
113th Warmest
Warmest since:
2012
Ties: 1905, 1915, 1924, 1984, 2014
Mar 1916–Aug 1917
18-Month
57.8°F
(14.3°C)
58.8°F
(14.9°C)
-1.0°F
(-0.6°C)
17th Coolest
Coolest since:
1904
111th Warmest
Warmest since:
2012
Ties: 1927, 1982, 1984
Sep 1915–Aug 1917
24-Month
54.9°F
(12.7°C)
55.3°F
(12.9°C)
-0.4°F
(-0.2°C)
33rd Coolest
Coolest since:
1979
94th Warmest
Warmest since:
2017
Ties: 1916, 1924, 1929, 1983
Sep 1914–Aug 1917
36-Month
54.6°F
(12.6°C)
55.3°F
(12.9°C)
-0.7°F
(-0.3°C)
17th Coolest
Coolest since:
1979
109th Warmest
Warmest since:
2018
Ties: 1961, 1963, 1981, 1984
Sep 1913–Aug 1917
48-Month
55.1°F
(12.8°C)
55.3°F
(12.9°C)
-0.2°F
(-0.1°C)
36th Coolest
Coolest since:
1980
89th Warmest
Warmest since:
2019
Ties: 1930, 1951, 1973, 1983
Sep 1912–Aug 1917
60-Month
55.3°F
(12.9°C)
55.3°F
(12.9°C)
0.0°F
(0.0°C)
53rd Coolest
Coolest since:
1906
71st Warmest
Warmest since:
2020
Ties: 1952, 1998

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