Climate at a Glance

Statewide Rankings

Look up monthly rankings for 1-12, 18, 24, 36, 48, and 60-month time periods using the options below. Data and statistics are as of May 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1935

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1935
1-Month
66.0°F
(18.9°C)
66.2°F
(19.0°C)
-0.2°F
(-0.1°C)
59th Coolest Coolest since: 1934 1918
68th Warmest Warmest since: 1933 1925, 1933
Ties: 1945
Aug–Sep 1935
2-Month
70.4°F
(21.3°C)
69.9°F
(21.1°C)
0.5°F
(0.2°C)
78th Coolest Coolest since: 1934 1967
49th Warmest Warmest since: 1933 1936
Ties: 1914, 1961, 1971, 1987, 2000
Jul–Sep 1935
3-Month
73.0°F
(22.8°C)
71.7°F
(22.1°C)
1.3°F
(0.7°C)
94th Coolest Coolest since: 1932 1967
33rd Warmest Warmest since: 1934 1936
Ties: 1914
Jun–Sep 1935
4-Month
71.6°F
(22.0°C)
71.6°F
(22.0°C)
0.0°F
(0.0°C)
55th Coolest Coolest since: 1929 1915, 1924
72nd Warmest Warmest since: 1934 1936
Ties: 1957, 1990, 2008
May–Sep 1935
5-Month
68.7°F
(20.4°C)
69.8°F
(21.0°C)
-1.1°F
(-0.6°C)
28th Coolest Coolest since: 1929 1924
99th Warmest Warmest since: 1934 1936
Ties: 1909, 1996
Apr–Sep 1935
6-Month
65.3°F
(18.5°C)
66.7°F
(19.3°C)
-1.4°F
(-0.8°C)
17th Coolest Coolest since: 1928 1907
110th Warmest Warmest since: 1934 2010
Ties: 1902, 1910, 1974, 1996
Mar–Sep 1935
7-Month
62.5°F
(16.9°C)
62.8°F
(17.1°C)
-0.3°F
(-0.2°C)
46th Coolest Coolest since: 1932 1924
81st Warmest Warmest since: 1934 2012
Ties: 1897, 1903, 1937, 1978, 2009
Feb–Sep 1935
8-Month
58.7°F
(14.8°C)
58.6°F
(14.8°C)
0.1°F
(0.0°C)
61st Coolest Coolest since: 1929 1904
66th Warmest Warmest since: 1934 2012
Ties: 1913, 1918, 1970
Jan–Sep 1935
9-Month
55.3°F
(12.9°C)
55.0°F
(12.8°C)
0.3°F
(0.1°C)
72nd Coolest Coolest since: 1929 1904, 1912
55th Warmest Warmest since: 1934 2012
Ties: 1936, 1942, 1992
Dec 1934–Sep 1935
10-Month
52.4°F
(11.3°C)
52.4°F
(11.3°C)
0.0°F
(0.0°C)
58th Coolest Coolest since: 1929 1904
68th Warmest Warmest since: 1934 2012
Ties: 1901, 1906, 1956, 1959, 1964, 1972
Nov 1934–Sep 1935
11-Month
51.7°F
(10.9°C)
51.3°F
(10.7°C)
0.4°F
(0.2°C)
74th Coolest Coolest since: 1929 1904
52nd Warmest Warmest since: 1934 2012
Ties: 1981, 1992, 2011
Oct 1934–Sep 1935
12-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
80th Coolest Coolest since: 1930 1904
46th Warmest Warmest since: 1934 2012
Apr 1934–Sep 1935
18-Month
58.0°F
(14.4°C)
56.7°F
(13.7°C)
1.3°F
(0.7°C)
105th Coolest Coolest since: 1933 1904, 1918
21st Warmest Warmest since: 1934 2012
Ties: 1914, 1991, 2011
Oct 1933–Sep 1935
24-Month
52.6°F
(11.4°C)
51.7°F
(10.9°C)
0.9°F
(0.5°C)
99th Coolest Coolest since: 1931 1979
26th Warmest Warmest since: 1934 2017
Ties: 1914, 1931, 1953, 2001, 2011
Oct 1932–Sep 1935
36-Month
52.7°F
(11.5°C)
51.6°F
(10.9°C)
1.1°F
(0.6°C)
101st Coolest Coolest since: 1931 1979
23rd Warmest Warmest since: 1934 2018
Ties: 1987, 2004
Oct 1931–Sep 1935
48-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
113th Coolest Coolest since: 1933 1905
10th Warmest Warmest since: 1934 2019
Ties: 1933, 1955, 2000, 2005, 2012
Oct 1930–Sep 1935
60-Month
53.1°F
(11.7°C)
51.6°F
(10.9°C)
1.5°F
(0.8°C)
116th Coolest Coolest since: 1934 1906
6th Warmest Warmest since: 1934 2020
Ties: 1934

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2021, retrieved on June 21, 2021 from https://www.ncdc.noaa.gov/cag/