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 April 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1909

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1909
1-Month
63.9°F
(17.7°C)
66.2°F
(19.0°C)
-2.3°F
(-1.3°C)
20th Coolest Coolest since: 1902 1918
107th Warmest Warmest since: 1908 1925, 1933
Aug–Sep 1909
2-Month
70.1°F
(21.2°C)
69.8°F
(21.0°C)
0.3°F
(0.2°C)
70th Coolest Coolest since: 1907 1967
57th Warmest Warmest since: 1908 1936
Ties: 1916
Jul–Sep 1909
3-Month
71.0°F
(21.7°C)
71.7°F
(22.1°C)
-0.7°F
(-0.4°C)
42nd Coolest Coolest since: 1907 1967
85th Warmest Warmest since: 1908 1936
Ties: 1993
Jun–Sep 1909
4-Month
71.1°F
(21.7°C)
71.7°F
(22.1°C)
-0.6°F
(-0.4°C)
44th Coolest Coolest since: 1907 1915, 1924
83rd Warmest Warmest since: 1908 1936
Ties: 2000
May–Sep 1909
5-Month
68.7°F
(20.4°C)
69.7°F
(20.9°C)
-1.0°F
(-0.5°C)
28th Coolest Coolest since: 1907 1924
99th Warmest Warmest since: 1908 1936
Ties: 1935, 1996
Apr–Sep 1909
6-Month
65.5°F
(18.6°C)
66.7°F
(19.3°C)
-1.2°F
(-0.7°C)
23rd Coolest Coolest since: 1907 1907
104th Warmest Warmest since: 1908 2010
Ties: 1976, 1989
Mar–Sep 1909
7-Month
61.6°F
(16.4°C)
62.9°F
(17.2°C)
-1.3°F
(-0.8°C)
17th Coolest Coolest since: 1907 1924
110th Warmest Warmest since: 1908 2012
Ties: 1997
Feb–Sep 1909
8-Month
58.0°F
(14.4°C)
58.7°F
(14.8°C)
-0.7°F
(-0.4°C)
37th Coolest Coolest since: 1907 1904
90th Warmest Warmest since: 1908 2012
Ties: 1900, 1901, 1903, 1972, 2013
Jan–Sep 1909
9-Month
54.6°F
(12.6°C)
54.9°F
(12.7°C)
-0.3°F
(-0.1°C)
52nd Coolest Coolest since: 1907 1904, 1912
75th Warmest Warmest since: 1908 2012
Ties: 1897, 1937
Dec 1908–Sep 1909
10-Month
52.3°F
(11.3°C)
52.4°F
(11.3°C)
-0.1°F
(0.0°C)
57th Coolest Coolest since: 1907 1904
69th Warmest Warmest since: 1908 2012
Nov 1908–Sep 1909
11-Month
51.4°F
(10.8°C)
51.4°F
(10.8°C)
0.0°F
(0.0°C)
63rd Coolest Coolest since: 1907 1904
63rd Warmest Warmest since: 1908 2012
Ties: 1897, 1985
Oct 1908–Sep 1909
12-Month
51.6°F
(10.9°C)
51.6°F
(10.9°C)
0.0°F
(0.0°C)
56th Coolest Coolest since: 1907 1904
70th Warmest Warmest since: 1908 2012
Ties: 1896, 1916, 1923
Apr 1908–Sep 1909
18-Month
56.7°F
(13.7°C)
56.7°F
(13.7°C)
0.0°F
(0.0°C)
60th Coolest Coolest since: 1908 1904, 1918
66th Warmest Warmest since: 1901 2012
Ties: 1945, 1948, 1965, 1990, 2003
Oct 1907–Sep 1909
24-Month
51.7°F
(10.9°C)
51.6°F
(10.9°C)
0.1°F
(0.0°C)
59th Coolest Coolest since: 1908 1979
66th Warmest Warmest since: 1901 2017
Ties: 1911, 1915, 1920, 1936, 1944, 1981
Oct 1906–Sep 1909
36-Month
51.3°F
(10.7°C)
51.6°F
(10.9°C)
-0.3°F
(-0.2°C)
39th Coolest Coolest since: 1908 1979
85th Warmest Warmest since: 1908 2018
Ties: 1908, 1914, 1964, 1972, 1996, 1997
Oct 1905–Sep 1909
48-Month
51.3°F
(10.7°C)
51.5°F
(10.8°C)
-0.2°F
(-0.1°C)
34th Coolest Coolest since: 1908 1905
89th Warmest Warmest since: 1903 2019
Ties: 1900, 1903, 1928, 1930, 1951, 1960, 1964, 1965, 1984
Oct 1904–Sep 1909
60-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
23rd Coolest Coolest since: 1908 1906
99th Warmest Warmest since: 1901 2020
Ties: 1912, 1964, 1978, 1983, 1997

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2021, retrieved on May 15, 2021 from https://www.ncdc.noaa.gov/cag/