Divisional Rankings

Divisional Data Info
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Illinois, Climate Division 5. East

Average Temperature Rankings, August 1999

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
August 1999
1-Month
70.2°F
(21.2°C)
72.1°F
(22.3°C)
-1.9°F
(-1.1°C)
28th Coolest
Coolest since:
1915
101st Warmest
Warmest since:
1947
Jul–Aug 1999
2-Month
73.9°F
(23.3°C)
73.2°F
(22.9°C)
0.7°F
(0.4°C)
86th Coolest
Coolest since:
1915
43rd Warmest
Warmest since:
1936
Ties: 1952, 1957, 1998, 2001, 2020
Jun–Aug 1999
3-Month
73.2°F
(22.9°C)
72.3°F
(22.4°C)
0.9°F
(0.5°C)
89th Coolest
Coolest since:
1915
40th Warmest
Warmest since:
1936
Ties: 1911
May–Aug 1999
4-Month
70.9°F
(21.6°C)
69.4°F
(20.8°C)
1.5°F
(0.8°C)
101st Coolest
Coolest since:
1915
28th Warmest
Warmest since:
1934
Ties: 1952, 2016, 2022
Apr–Aug 1999
5-Month
67.3°F
(19.6°C)
65.5°F
(18.6°C)
1.8°F
(1.0°C)
110th Coolest
Coolest since:
1907
19th Warmest
Warmest since:
1991
Ties: 1954, 2007, 2011
Mar–Aug 1999
6-Month
62.2°F
(16.8°C)
61.0°F
(16.1°C)
1.2°F
(0.7°C)
100th Coolest
Coolest since:
1904, 1907
29th Warmest
Warmest since:
2012
Ties: 1896, 1922, 1942, 1946, 1973, 2001
Feb–Aug 1999
7-Month
58.4°F
(14.7°C)
56.2°F
(13.4°C)
2.2°F
(1.3°C)
115th Coolest
Coolest since:
1904
14th Warmest
Warmest since:
2012
Jan–Aug 1999
8-Month
53.9°F
(12.2°C)
52.1°F
(11.2°C)
1.8°F
(1.0°C)
103rd Coolest
Coolest since:
1904, 1912
26th Warmest
Warmest since:
2012
Ties: 1973
Dec 1998–Aug 1999
9-Month
51.8°F
(11.0°C)
49.5°F
(9.7°C)
2.3°F
(1.3°C)
114th Coolest
Coolest since:
1904
14th Warmest
Warmest since:
2012
Ties: 1953, 2020
Nov 1998–Aug 1999
10-Month
51.1°F
(10.6°C)
48.5°F
(9.2°C)
2.6°F
(1.4°C)
119th Coolest
Coolest since:
1904
9th Warmest
Warmest since:
2012
Ties: 1987, 1995, 2000, 2005
Oct 1998–Aug 1999
11-Month
51.5°F
(10.8°C)
48.9°F
(9.4°C)
2.6°F
(1.4°C)
119th Coolest
Coolest since:
1904
9th Warmest
Warmest since:
2012
Ties: 1954, 1995
Sep 1998–Aug 1999
12-Month
53.1°F
(11.7°C)
50.3°F
(10.2°C)
2.8°F
(1.5°C)
121st Coolest
Coolest since:
1904
7th Warmest
Warmest since:
2012
Mar 1998–Aug 1999
18-Month
56.3°F
(13.5°C)
53.8°F
(12.1°C)
2.5°F
(1.4°C)
124th Coolest
Coolest since:
1904
4th Warmest
Warmest to Date
2012
Sep 1997–Aug 1999
24-Month
53.0°F
(11.7°C)
50.3°F
(10.2°C)
2.7°F
(1.5°C)
125th Coolest
Coolest since:
1905
2nd Warmest
Warmest to Date
2017
Ties: 2012
Sep 1996–Aug 1999
36-Month
51.7°F
(10.9°C)
50.3°F
(10.2°C)
1.4°F
(0.7°C)
106th Coolest
Coolest since:
1904
20th Warmest
Warmest since:
2018
Ties: 1954, 1992
Sep 1995–Aug 1999
48-Month
51.0°F
(10.6°C)
50.3°F
(10.2°C)
0.7°F
(0.4°C)
88th Coolest
Coolest since:
1905
37th Warmest
Warmest since:
2019
Ties: 1923, 1987, 1994
Sep 1994–Aug 1999
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, 1990, 1995, 2000

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