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


Illinois

Average Temperature Rankings, October 2009

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
October 2009
1-Month
50.1°F
(10.1°C)
54.6°F
(12.6°C)
-4.5°F
(-2.5°C)
8th Coolest Coolest since: 1988 1925
119th Warmest Warmest since: 2008 1963
Sep–Oct 2009
2-Month
58.0°F
(14.4°C)
60.4°F
(15.8°C)
-2.4°F
(-1.4°C)
14th Coolest Coolest since: 2006 1917
113th Warmest Warmest since: 2008 1897, 2016
Ties: 1943
Aug–Oct 2009
3-Month
62.3°F
(16.8°C)
64.7°F
(18.2°C)
-2.4°F
(-1.4°C)
8th Coolest Coolest since: 1992 1917
119th Warmest Warmest since: 2008 1947
Jul–Oct 2009
4-Month
64.3°F
(17.9°C)
67.5°F
(19.7°C)
-3.2°F
(-1.8°C)
3rd Coolest Coolest since: 1967 1917
124th Warmest Warmest since: 2008 1936
Jun–Oct 2009
5-Month
66.0°F
(18.9°C)
68.3°F
(20.2°C)
-2.3°F
(-1.3°C)
5th Coolest Coolest since: 1992 1917
122nd Warmest Warmest since: 2008 1936
Ties: 1915
May–Oct 2009
6-Month
65.5°F
(18.6°C)
67.3°F
(19.6°C)
-1.8°F
(-1.0°C)
12th Coolest Coolest since: 1992 1917
115th Warmest Warmest since: 2008 1936
Apr–Oct 2009
7-Month
63.4°F
(17.4°C)
64.9°F
(18.3°C)
-1.5°F
(-0.9°C)
12th Coolest Coolest since: 1997 1917
115th Warmest Warmest since: 2008 2010
Ties: 1928
Mar–Oct 2009
8-Month
61.0°F
(16.1°C)
61.9°F
(16.6°C)
-0.9°F
(-0.5°C)
28th Coolest Coolest since: 1997 1917
99th Warmest Warmest since: 2008 2012
Ties: 1972, 1975, 1979
Feb–Oct 2009
9-Month
57.8°F
(14.3°C)
58.2°F
(14.6°C)
-0.4°F
(-0.3°C)
44th Coolest Coolest since: 2008 1917
83rd Warmest Warmest since: 2007 2012
Ties: 1901, 1940, 1968, 1974, 1992
Jan–Oct 2009
10-Month
54.1°F
(12.3°C)
54.9°F
(12.7°C)
-0.8°F
(-0.4°C)
29th Coolest Coolest since: 1997 1904
98th Warmest Warmest since: 2008 2012
Ties: 1926, 1997
Dec 2008–Oct 2009
11-Month
51.6°F
(10.9°C)
52.6°F
(11.4°C)
-1.0°F
(-0.5°C)
20th Coolest Coolest since: 1996 1904
106th Warmest Warmest since: 2008 2012
Ties: 1926, 1940, 1945, 1967, 1969
Nov 2008–Oct 2009
12-Month
50.7°F
(10.4°C)
51.6°F
(10.9°C)
-0.9°F
(-0.5°C)
25th Coolest Coolest since: 1997 1904
101st Warmest Warmest since: 2008 2012
Ties: 1958, 1969, 1970
May 2008–Oct 2009
18-Month
56.0°F
(13.3°C)
56.8°F
(13.8°C)
-0.8°F
(-0.5°C)
24th Coolest Coolest since: 1997 1904
102nd Warmest Warmest since: 2008 2012
Ties: 1958, 1969
Nov 2007–Oct 2009
24-Month
51.0°F
(10.6°C)
51.6°F
(10.9°C)
-0.6°F
(-0.3°C)
28th Coolest Coolest since: 1997 1905
97th Warmest Warmest since: 2008 2017
Ties: 1962, 1963, 1968, 1994
Nov 2006–Oct 2009
36-Month
52.1°F
(11.2°C)
51.6°F
(10.9°C)
0.5°F
(0.3°C)
84th Coolest Coolest since: 1998 1904, 1979
40th Warmest Warmest since: 2008 2018
Ties: 1931, 1990, 2011
Nov 2005–Oct 2009
48-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
96th Coolest Coolest since: 2004 1905
27th Warmest Warmest since: 2008 2019
Ties: 1989, 1990, 1992, 2014
Nov 2004–Oct 2009
60-Month
52.7°F
(11.5°C)
51.5°F
(10.8°C)
1.2°F
(0.7°C)
107th Coolest Coolest since: 2005 1905, 1906
15th Warmest Warmest since: 2008 2002, 2020
Ties: 1936, 2001, 2004, 2005, 2012, 2018

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published November 2020, retrieved on December 1, 2020 from https://www.ncdc.noaa.gov/cag/