Divisional Rankings

Divisional Data Info
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Illinois, Climate Division 2. Northeast

Average Temperature Rankings, September 1999

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
September 1999
1-Month
62.8°F
(17.1°C)
63.7°F
(17.6°C)
-0.9°F
(-0.5°C)
42nd Coolest
Coolest since:
1918
87th Warmest
Warmest since:
1897
Ties: 1937
Aug–Sep 1999
2-Month
66.2°F
(19.0°C)
67.5°F
(19.7°C)
-1.3°F
(-0.7°C)
27th Coolest
Coolest since:
1902
102nd Warmest
Warmest since:
1947
Ties: 1957, 1962, 1963, 1997
Jul–Sep 1999
3-Month
69.9°F
(21.1°C)
69.3°F
(20.7°C)
0.6°F
(0.4°C)
75th Coolest
Coolest since:
1924
54th Warmest
Warmest since:
1936
Ties: 1913, 1914, 2006
Jun–Sep 1999
4-Month
70.1°F
(21.2°C)
69.2°F
(20.7°C)
0.9°F
(0.5°C)
87th Coolest
Coolest since:
1915
42nd Warmest
Warmest since:
2005
Ties: 1922, 1930, 1971
May–Sep 1999
5-Month
68.5°F
(20.3°C)
67.1°F
(19.5°C)
1.4°F
(0.8°C)
99th Coolest
Coolest since:
1924
30th Warmest
Warmest since:
1921, 1988
Ties: 1977, 2002, 2020
Apr–Sep 1999
6-Month
65.5°F
(18.6°C)
63.9°F
(17.7°C)
1.6°F
(0.9°C)
107th Coolest
Coolest since:
1907
22nd Warmest
Warmest since:
1921
Mar–Sep 1999
7-Month
61.2°F
(16.2°C)
59.9°F
(15.5°C)
1.3°F
(0.7°C)
104th Coolest
Coolest since:
1924
25th Warmest
Warmest since:
2012
Ties: 1911, 1938, 2006, 2022
Feb–Sep 1999
8-Month
57.8°F
(14.3°C)
55.5°F
(13.1°C)
2.3°F
(1.2°C)
118th Coolest
Coolest since:
1904, 1917
11th Warmest
Warmest since:
2012
Ties: 2000
Jan–Sep 1999
9-Month
53.6°F
(12.0°C)
51.7°F
(10.9°C)
1.9°F
(1.1°C)
109th Coolest
Coolest since:
1904, 1912
20th Warmest
Warmest since:
2012
Ties: 1938, 1955
Dec 1998–Sep 1999
10-Month
51.6°F
(10.9°C)
49.1°F
(9.5°C)
2.5°F
(1.4°C)
116th Coolest
Coolest since:
1904
12th Warmest
Warmest since:
2012
Nov 1998–Sep 1999
11-Month
50.8°F
(10.4°C)
48.1°F
(8.9°C)
2.7°F
(1.5°C)
115th Coolest
Coolest since:
1904
13th Warmest
Warmest since:
2012
Oct 1998–Sep 1999
12-Month
51.1°F
(10.6°C)
48.4°F
(9.1°C)
2.7°F
(1.5°C)
118th Coolest
Coolest since:
1904
10th Warmest
Warmest since:
2012
Apr 1998–Sep 1999
18-Month
56.2°F
(13.4°C)
53.6°F
(12.0°C)
2.6°F
(1.4°C)
123rd Coolest
Coolest since:
1904
5th Warmest
Warmest to Date
2012
Oct 1997–Sep 1999
24-Month
51.5°F
(10.8°C)
48.5°F
(9.2°C)
3.0°F
(1.6°C)
125th Coolest
Coolest since:
1918
2nd Warmest
Warmest to Date
2017
Oct 1996–Sep 1999
36-Month
50.1°F
(10.1°C)
48.5°F
(9.2°C)
1.6°F
(0.9°C)
114th Coolest
Coolest since:
1979
12th Warmest
Warmest since:
2000
Ties: 1923, 1955
Oct 1995–Sep 1999
48-Month
49.3°F
(9.6°C)
48.5°F
(9.2°C)
0.8°F
(0.4°C)
96th Coolest
Coolest since:
1905, 1918
29th Warmest
Warmest since:
2001, 2002, 2019
Ties: 1932, 1942, 1992, 1993, 2009, 2010, 2014
Oct 1994–Sep 1999
60-Month
49.5°F
(9.7°C)
48.4°F
(9.1°C)
1.1°F
(0.6°C)
100th Coolest
Coolest since:
1905, 1906
24th Warmest
Warmest since:
2002
Ties: 1923, 1957, 1990

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