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 1945

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
September 1945
1-Month
66.0°F
(18.9°C)
66.2°F
(19.0°C)
-0.2°F
(-0.1°C)
58th Coolest Coolest since: 1943 1918
68th Warmest Warmest since: 1944 1925, 1933
Ties: 1935
Aug–Sep 1945
2-Month
69.6°F
(20.9°C)
69.9°F
(21.1°C)
-0.3°F
(-0.2°C)
57th Coolest Coolest since: 1943 1967
69th Warmest Warmest since: 1944 1936
Ties: 1968, 1977, 2017
Jul–Sep 1945
3-Month
70.7°F
(21.5°C)
71.7°F
(22.1°C)
-1.0°F
(-0.6°C)
34th Coolest Coolest since: 1929 1967
92nd Warmest Warmest since: 1944 1936
Ties: 1979
Jun–Sep 1945
4-Month
69.9°F
(21.1°C)
71.6°F
(22.0°C)
-1.7°F
(-0.9°C)
16th Coolest Coolest since: 1928 1915, 1924
110th Warmest Warmest since: 1944 1936
Ties: 1907, 1958, 2009
May–Sep 1945
5-Month
67.3°F
(19.6°C)
69.7°F
(20.9°C)
-2.4°F
(-1.3°C)
7th Coolest Coolest since: 1924 1924
119th Warmest Warmest since: 1944 1936
Apr–Sep 1945
6-Month
64.9°F
(18.3°C)
66.7°F
(19.3°C)
-1.8°F
(-1.0°C)
10th Coolest Coolest since: 1928 1907
116th Warmest Warmest since: 1944 2010
Ties: 1951, 1961
Mar–Sep 1945
7-Month
62.8°F
(17.1°C)
62.9°F
(17.2°C)
-0.1°F
(-0.1°C)
56th Coolest Coolest since: 1943 1924
70th Warmest Warmest since: 1944 2012
Feb–Sep 1945
8-Month
58.8°F
(14.9°C)
58.7°F
(14.8°C)
0.1°F
(0.1°C)
69th Coolest Coolest since: 1943 1904
57th Warmest Warmest since: 1944 2012
Ties: 1927, 1949, 1985, 2009
Jan–Sep 1945
9-Month
54.7°F
(12.6°C)
55.0°F
(12.8°C)
-0.3°F
(-0.2°C)
55th Coolest Coolest since: 1940 1904, 1912
71st Warmest Warmest since: 1944 2012
Ties: 1910, 1948, 1974, 1980
Dec 1944–Sep 1945
10-Month
51.6°F
(10.9°C)
52.5°F
(11.4°C)
-0.9°F
(-0.5°C)
30th Coolest Coolest since: 1940 1904
95th Warmest Warmest since: 1944 2012
Ties: 1903, 1961, 1965
Nov 1944–Sep 1945
11-Month
50.8°F
(10.4°C)
51.4°F
(10.8°C)
-0.6°F
(-0.4°C)
36th Coolest Coolest since: 1940 1904
89th Warmest Warmest since: 1944 2012
Ties: 1950, 1968, 1993, 2003, 2009, 2015
Oct 1944–Sep 1945
12-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
40th Coolest Coolest since: 1940 1904
85th Warmest Warmest since: 1944 2012
Ties: 2009, 2015
Apr 1944–Sep 1945
18-Month
56.7°F
(13.7°C)
56.7°F
(13.7°C)
0.0°F
(0.0°C)
62nd Coolest Coolest since: 1943 1904, 1918
63rd Warmest Warmest since: 1944 2012
Ties: 1909, 1948, 1965, 1990, 2003
Oct 1943–Sep 1945
24-Month
51.6°F
(10.9°C)
51.7°F
(10.9°C)
-0.1°F
(0.0°C)
51st Coolest Coolest since: 1937 1979
73rd Warmest Warmest since: 1944 2017
Ties: 1946, 1964, 1975, 1977, 1983, 1990, 1996
Oct 1942–Sep 1945
36-Month
51.5°F
(10.8°C)
51.6°F
(10.9°C)
-0.1°F
(-0.1°C)
50th Coolest Coolest since: 1930 1979
73rd Warmest Warmest since: 1944 2018
Ties: 1910, 1925, 1977, 1986
Oct 1941–Sep 1945
48-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
66th Coolest Coolest since: 1931 1905
56th Warmest Warmest since: 1944 2019
Ties: 1916, 1925, 1931, 1950, 1958, 1974
Oct 1940–Sep 1945
60-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
78th Coolest Coolest since: 1944 1906
43rd Warmest Warmest since: 1943 2002
Ties: 1937, 1938, 1954, 1993, 2015

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/