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 January 2020. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1948

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1948
1-Month
67.9°F
(19.9°C)
66.2°F
(19.0°C)
1.7°F
(0.9°C)
88th Coolest Coolest since: 1947 1918
38th Warmest Warmest since: 1941 1925, 1933
Ties: 1938, 1959, 1990
Aug–Sep 1948
2-Month
70.8°F
(21.6°C)
69.8°F
(21.0°C)
1.0°F
(0.6°C)
86th Coolest Coolest since: 1946 1967
40th Warmest Warmest since: 1947 1936
Ties: 1970
Jul–Sep 1948
3-Month
72.3°F
(22.4°C)
71.8°F
(22.1°C)
0.5°F
(0.3°C)
77th Coolest Coolest since: 1946 1967
49th Warmest Warmest since: 1947 1936
Ties: 1898, 1977
Jun–Sep 1948
4-Month
72.0°F
(22.2°C)
71.6°F
(22.0°C)
0.4°F
(0.2°C)
76th Coolest Coolest since: 1946 1915, 1924
50th Warmest Warmest since: 1947 1936
Ties: 1906, 1937, 1940, 2015, 2017
May–Sep 1948
5-Month
69.6°F
(20.9°C)
69.7°F
(20.9°C)
-0.1°F
(0.0°C)
53rd Coolest Coolest since: 1947 1924
73rd Warmest Warmest since: 1947 1936
Ties: 1947, 1975
Apr–Sep 1948
6-Month
67.3°F
(19.6°C)
66.7°F
(19.3°C)
0.6°F
(0.3°C)
76th Coolest Coolest since: 1947 1907
50th Warmest Warmest since: 1944 2010
Ties: 1932, 1978
Mar–Sep 1948
7-Month
63.3°F
(17.4°C)
62.9°F
(17.2°C)
0.4°F
(0.2°C)
72nd Coolest Coolest since: 1947 1924
54th Warmest Warmest since: 1946 2012
Ties: 1898, 1901, 1944, 1952, 1980
Feb–Sep 1948
8-Month
59.0°F
(15.0°C)
58.7°F
(14.8°C)
0.3°F
(0.2°C)
74th Coolest Coolest since: 1947 1904
52nd Warmest Warmest since: 1946 2012
Ties: 1908, 1981
Jan–Sep 1948
9-Month
54.7°F
(12.6°C)
54.9°F
(12.7°C)
-0.2°F
(-0.1°C)
55th Coolest Coolest since: 1947 1904, 1912
71st Warmest Warmest since: 1946 2012
Ties: 1910, 1945, 1974, 1980
Dec 1947–Sep 1948
10-Month
52.5°F
(11.4°C)
52.5°F
(11.4°C)
0.0°F
(0.0°C)
69th Coolest Coolest since: 1947 1904
56th Warmest Warmest since: 1946 2012
Ties: 1937, 1985, 2011, 2015
Nov 1947–Sep 1948
11-Month
50.9°F
(10.5°C)
51.3°F
(10.7°C)
-0.4°F
(-0.2°C)
43rd Coolest Coolest since: 1945 1904
82nd Warmest Warmest since: 1947 2012
Ties: 1971
Oct 1947–Sep 1948
12-Month
51.9°F
(11.1°C)
51.7°F
(10.9°C)
0.2°F
(0.2°C)
67th Coolest Coolest since: 1947 1904
58th Warmest Warmest since: 1946 2012
Ties: 1974
Apr 1947–Sep 1948
18-Month
56.7°F
(13.7°C)
56.6°F
(13.7°C)
0.1°F
(0.0°C)
62nd Coolest Coolest since: 1947 1904, 1918
63rd Warmest Warmest since: 1945 2012
Ties: 1909, 1945, 1965, 1990, 2003
Oct 1946–Sep 1948
24-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
73rd Coolest Coolest since: 1946 1979
51st Warmest Warmest since: 1947 2017
Ties: 1898, 1941, 1950, 1965, 1972, 1989, 2004
Oct 1945–Sep 1948
36-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
74th Coolest Coolest since: 1947 1979
49th Warmest Warmest since: 1944 2018
Ties: 1915, 1985, 2016
Oct 1944–Sep 1948
48-Month
51.7°F
(10.9°C)
51.6°F
(10.9°C)
0.1°F
(0.0°C)
55th Coolest Coolest since: 1947 1905
67th Warmest Warmest since: 1947 2019
Ties: 1911, 1947, 1983, 1995
Oct 1943–Sep 1948
60-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
65th Coolest Coolest since: 1947 1906
56th Warmest Warmest since: 1946 2002
Ties: 1924, 1940, 1949

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published February 2020, retrieved on February 20, 2020 from https://www.ncdc.noaa.gov/cag/