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 5. East

Average Temperature Rankings, August 1990

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
August 1990
1-Month
71.0°F
(21.7°C)
72.1°F
(22.3°C)
-1.1°F
(-0.6°C)
39th Coolest
Coolest since:
1915
90th Warmest
Warmest since:
1947
Jul–Aug 1990
2-Month
71.9°F
(22.2°C)
73.3°F
(22.9°C)
-1.4°F
(-0.7°C)
29th Coolest
Coolest since:
1915
100th Warmest
Warmest since:
1936
Ties: 1982, 2013
Jun–Aug 1990
3-Month
71.6°F
(22.0°C)
72.3°F
(22.4°C)
-0.7°F
(-0.4°C)
42nd Coolest
Coolest since:
1915
87th Warmest
Warmest since:
1936
Ties: 1905, 1908, 1909, 1979, 1996
May–Aug 1990
4-Month
68.2°F
(20.1°C)
69.5°F
(20.8°C)
-1.3°F
(-0.7°C)
24th Coolest
Coolest since:
1915
105th Warmest
Warmest since:
1934
Ties: 1909, 1912, 1974, 2009
Apr–Aug 1990
5-Month
64.6°F
(18.1°C)
65.5°F
(18.6°C)
-0.9°F
(-0.5°C)
29th Coolest
Coolest since:
1907
100th Warmest
Warmest since:
1991
Ties: 1979
Mar–Aug 1990
6-Month
61.1°F
(16.2°C)
61.0°F
(16.1°C)
0.1°F
(0.1°C)
54th Coolest
Coolest since:
1904
75th Warmest
Warmest since:
2012
Ties: 1910, 1931, 1945, 1970, 2019
Feb–Aug 1990
7-Month
57.3°F
(14.1°C)
56.2°F
(13.4°C)
1.1°F
(0.7°C)
91st Coolest
Coolest since:
1904
38th Warmest
Warmest since:
2012
Ties: 1896, 1931, 1957, 2020
Jan–Aug 1990
8-Month
54.5°F
(12.5°C)
52.2°F
(11.2°C)
2.3°F
(1.3°C)
116th Coolest
Coolest since:
1904, 1912
13th Warmest
Warmest since:
2012
Dec 1989–Aug 1990
9-Month
50.3°F
(10.2°C)
49.5°F
(9.7°C)
0.8°F
(0.5°C)
82nd Coolest
Coolest since:
1904
46th Warmest
Warmest since:
2012
Ties: 1913, 2018
Nov 1989–Aug 1990
10-Month
49.2°F
(9.6°C)
48.5°F
(9.2°C)
0.7°F
(0.4°C)
85th Coolest
Coolest since:
1904
43rd Warmest
Warmest since:
2012
Ties: 1944, 1946, 1986
Oct 1989–Aug 1990
11-Month
49.7°F
(9.8°C)
49.0°F
(9.4°C)
0.7°F
(0.4°C)
85th Coolest
Coolest since:
1904
43rd Warmest
Warmest since:
2012
Ties: 1913, 1972, 1985, 1986, 1992
Sep 1989–Aug 1990
12-Month
50.7°F
(10.4°C)
50.3°F
(10.2°C)
0.4°F
(0.2°C)
75th Coolest
Coolest since:
1904
53rd Warmest
Warmest since:
2012
Mar 1989–Aug 1990
18-Month
54.0°F
(12.2°C)
53.9°F
(12.2°C)
0.1°F
(0.0°C)
66th Coolest
Coolest since:
1904
62nd Warmest
Warmest since:
2012
Ties: 1898, 1909, 1930, 1973
Sep 1988–Aug 1990
24-Month
50.5°F
(10.3°C)
50.3°F
(10.2°C)
0.2°F
(0.1°C)
67th Coolest
Coolest since:
1905
60th Warmest
Warmest since:
2017
Ties: 1941, 1947
Sep 1987–Aug 1990
36-Month
50.9°F
(10.5°C)
50.3°F
(10.2°C)
0.6°F
(0.3°C)
84th Coolest
Coolest since:
1904
42nd Warmest
Warmest since:
2018
Ties: 1941, 1950, 1976, 2009, 2010, 2011
Sep 1986–Aug 1990
48-Month
51.4°F
(10.8°C)
50.3°F
(10.2°C)
1.1°F
(0.6°C)
99th Coolest
Coolest since:
1905
26th Warmest
Warmest since:
2019
Ties: 1992, 1993, 2009
Sep 1985–Aug 1990
60-Month
51.3°F
(10.7°C)
50.3°F
(10.2°C)
1.0°F
(0.5°C)
95th Coolest
Coolest since:
1906
29th Warmest
Warmest since:
2020
Ties: 1933, 1987, 1995, 1999, 2000

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