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


Illinois

Average Temperature Rankings, April 1909

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
April 1909
1-Month
49.3°F
(9.6°C)
51.5°F
(10.8°C)
-2.2°F
(-1.2°C)
28th Coolest Coolest since: 1907 1907
99th Warmest Warmest since: 1908 2010
Ties: 1902
Mar–Apr 1909
2-Month
43.7°F
(6.5°C)
45.7°F
(7.6°C)
-2.0°F
(-1.1°C)
33rd Coolest Coolest since: 1906 1926
94th Warmest Warmest since: 1908 2012
Ties: 1928
Feb–Apr 1909
3-Month
40.1°F
(4.5°C)
40.2°F
(4.6°C)
-0.1°F
(-0.1°C)
59th Coolest Coolest since: 1907 1978
68th Warmest Warmest since: 1908 2012
Jan–Apr 1909
4-Month
37.0°F
(2.8°C)
36.5°F
(2.5°C)
0.5°F
(0.3°C)
72nd Coolest Coolest since: 1907 1912
55th Warmest Warmest since: 1908 2012
Ties: 1907, 1944, 2009
Dec 1908–Apr 1909
5-Month
35.9°F
(2.2°C)
35.1°F
(1.7°C)
0.8°F
(0.5°C)
78th Coolest Coolest since: 1907 1978
48th Warmest Warmest since: 1908 2012
Ties: 1907, 1985, 1989
Nov 1908–Apr 1909
6-Month
36.9°F
(2.7°C)
36.0°F
(2.2°C)
0.9°F
(0.5°C)
82nd Coolest Coolest since: 1908 1904
44th Warmest Warmest to Date 2012
Ties: 1910, 1966, 1988, 2013
Oct 1908–Apr 1909
7-Month
39.3°F
(4.1°C)
38.7°F
(3.7°C)
0.6°F
(0.4°C)
76th Coolest Coolest since: 1908 1904
50th Warmest Warmest since: 1903 2012
Ties: 1928, 1966
Sep 1908–Apr 1909
8-Month
43.1°F
(6.2°C)
42.1°F
(5.6°C)
1.0°F
(0.6°C)
91st Coolest Coolest since: 1908 1904
35th Warmest Warmest since: 1898 2017
Ties: 1928, 1938, 1949, 1990, 2007
Aug 1908–Apr 1909
9-Month
46.4°F
(8.0°C)
45.6°F
(7.6°C)
0.8°F
(0.4°C)
86th Coolest Coolest since: 1908 1904
40th Warmest Warmest since: 1898 2017
Ties: 1945, 1985, 1990
Jul 1908–Apr 1909
10-Month
49.2°F
(9.6°C)
48.6°F
(9.2°C)
0.6°F
(0.4°C)
78th Coolest Coolest since: 1908 1904
48th Warmest Warmest since: 1898 2012
Ties: 1934
Jun 1908–Apr 1909
11-Month
51.1°F
(10.6°C)
50.7°F
(10.4°C)
0.4°F
(0.2°C)
70th Coolest Coolest since: 1908 1904
56th Warmest Warmest since: 1898 2017
Ties: 1964
May 1908–Apr 1909
12-Month
52.1°F
(11.2°C)
51.7°F
(10.9°C)
0.4°F
(0.3°C)
78th Coolest Coolest since: 1908 1918
48th Warmest Warmest to Date 2012, 2017
Ties: 1949, 1966
Nov 1907–Apr 1909
18-Month
47.0°F
(8.3°C)
46.4°F
(8.0°C)
0.6°F
(0.3°C)
84th Coolest Coolest since: 1908 1905
41st Warmest Warmest to Date 2017
Ties: 1947, 1990, 2004, 2019
May 1907–Apr 1909
24-Month
51.4°F
(10.8°C)
51.7°F
(10.9°C)
-0.3°F
(-0.1°C)
43rd Coolest Coolest since: 1908 1905
82nd Warmest Warmest since: 1907 2017
Ties: 1916, 1947, 2010
May 1906–Apr 1909
36-Month
51.5°F
(10.8°C)
51.6°F
(10.9°C)
-0.1°F
(-0.1°C)
52nd Coolest Coolest since: 1908 1979
72nd Warmest Warmest since: 1898 2018
Ties: 1931, 1938
May 1905–Apr 1909
48-Month
51.4°F
(10.8°C)
51.5°F
(10.8°C)
-0.1°F
(0.0°C)
42nd Coolest Coolest since: 1908 1980
81st Warmest Warmest since: 1903 2019
Ties: 1951, 1953, 1960, 1973, 1977, 1983
May 1904–Apr 1909
60-Month
51.0°F
(10.6°C)
51.5°F
(10.8°C)
-0.5°F
(-0.2°C)
20th Coolest Coolest since: 1908 1906
102nd Warmest Warmest since: 1903 2020
Ties: 1929, 1997

Citing This Page

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