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


Illinois

Average Temperature Rankings, October 1940

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
October 1940
1-Month
58.6°F
(14.8°C)
54.6°F
(12.6°C)
4.0°F
(2.2°C)
113th Coolest Coolest since: 1939 1925
14th Warmest Warmest since: 1938 1963
Sep–Oct 1940
2-Month
62.0°F
(16.7°C)
60.4°F
(15.8°C)
1.6°F
(0.9°C)
96th Coolest Coolest since: 1937 1917
31st Warmest Warmest since: 1939 1897, 2016
Aug–Oct 1940
3-Month
66.0°F
(18.9°C)
64.7°F
(18.2°C)
1.3°F
(0.7°C)
97th Coolest Coolest since: 1937 1917
30th Warmest Warmest since: 1939 1947
Ties: 1906, 2019
Jul–Oct 1940
4-Month
68.6°F
(20.3°C)
67.5°F
(19.7°C)
1.1°F
(0.6°C)
99th Coolest Coolest since: 1937 1917
28th Warmest Warmest since: 1939 1936
Ties: 1922, 1930, 1933, 2002, 2018
Jun–Oct 1940
5-Month
69.3°F
(20.7°C)
68.2°F
(20.1°C)
1.1°F
(0.6°C)
94th Coolest Coolest since: 1937 1917
33rd Warmest Warmest since: 1939 1936
Ties: 2011, 2019
May–Oct 1940
6-Month
67.6°F
(19.8°C)
67.3°F
(19.6°C)
0.3°F
(0.2°C)
73rd Coolest Coolest since: 1937 1917
54th Warmest Warmest since: 1939 1936
Ties: 1964
Apr–Oct 1940
7-Month
65.0°F
(18.3°C)
65.0°F
(18.3°C)
0.0°F
(0.0°C)
58th Coolest Coolest since: 1937 1917
69th Warmest Warmest since: 1939 2010
Ties: 1908, 1952
Mar–Oct 1940
8-Month
61.4°F
(16.3°C)
61.8°F
(16.6°C)
-0.4°F
(-0.3°C)
42nd Coolest Coolest since: 1937 1917
85th Warmest Warmest since: 1939 2012
Ties: 1903, 1916, 1920, 1927, 1957
Feb–Oct 1940
9-Month
57.8°F
(14.3°C)
58.2°F
(14.6°C)
-0.4°F
(-0.3°C)
44th Coolest Coolest since: 1937 1917
83rd Warmest Warmest since: 1939 2012
Ties: 1901, 1968, 1974, 1992, 2009
Jan–Oct 1940
10-Month
53.4°F
(11.9°C)
54.9°F
(12.7°C)
-1.5°F
(-0.8°C)
12th Coolest Coolest since: 1929 1904
115th Warmest Warmest since: 1939 2012
Ties: 1902, 1929, 1966
Dec 1939–Oct 1940
11-Month
51.6°F
(10.9°C)
52.6°F
(11.4°C)
-1.0°F
(-0.5°C)
20th Coolest Coolest since: 1929 1904
106th Warmest Warmest since: 1939 2012
Ties: 1926, 1945, 1967, 1969, 2009
Nov 1939–Oct 1940
12-Month
50.6°F
(10.3°C)
51.6°F
(10.9°C)
-1.0°F
(-0.6°C)
22nd Coolest Coolest since: 1929 1904
104th Warmest Warmest since: 1939 2012
Ties: 1929, 1977
May 1939–Oct 1940
18-Month
56.7°F
(13.7°C)
56.8°F
(13.8°C)
-0.1°F
(-0.1°C)
54th Coolest Coolest since: 1936 1904
72nd Warmest Warmest since: 1939 2012
Ties: 1963, 1965, 2003
Nov 1938–Oct 1940
24-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
77th Coolest Coolest since: 1937 1905
48th Warmest Warmest since: 1939 2017
Ties: 1897, 1901, 1943, 1949, 2004
Nov 1937–Oct 1940
36-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
93rd Coolest Coolest since: 1938 1904, 1979
31st Warmest Warmest since: 1939 2018
Ties: 1987, 2020
Nov 1936–Oct 1940
48-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
82nd Coolest Coolest since: 1938 1905
41st Warmest Warmest since: 1939 2019
Ties: 1921, 1949, 1954, 1999, 2016
Nov 1935–Oct 1940
60-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
69th Coolest Coolest since: 1931 1905, 1906
53rd Warmest Warmest since: 1939 2002, 2020
Ties: 1924, 1944, 1946, 1949

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 26, 2021 from https://www.ncdc.noaa.gov/cag/