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 2019. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, May 1949

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Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1949
1-Month
64.3°F
(17.9°C)
62.1°F
(16.7°C)
2.2°F
(1.2°C)
93rd Coolest Coolest since: 1948 1917
33rd Warmest Warmest since: 1944 2018
Ties: 1912, 1955, 2010
Apr–May 1949
2-Month
57.4°F
(14.1°C)
56.8°F
(13.8°C)
0.6°F
(0.3°C)
70th Coolest Coolest since: 1947 1907
56th Warmest Warmest since: 1948 1896
Ties: 1954
Mar–May 1949
3-Month
51.5°F
(10.8°C)
51.1°F
(10.6°C)
0.4°F
(0.2°C)
66th Coolest Coolest since: 1947 1960
60th Warmest Warmest since: 1948 2012
Ties: 1967, 1990
Feb–May 1949
4-Month
46.2°F
(7.9°C)
45.6°F
(7.6°C)
0.6°F
(0.3°C)
75th Coolest Coolest since: 1948 1978
51st Warmest Warmest since: 1946 2012
Ties: 1956, 2002
Jan–May 1949
5-Month
42.7°F
(5.9°C)
41.6°F
(5.3°C)
1.1°F
(0.6°C)
85th Coolest Coolest since: 1948 1978, 1979
41st Warmest Warmest since: 1946 2012
Ties: 1919
Dec 1948–May 1949
6-Month
41.0°F
(5.0°C)
39.6°F
(4.2°C)
1.4°F
(0.8°C)
94th Coolest Coolest since: 1948 1978
31st Warmest Warmest since: 1946 2012
Nov 1948–May 1949
7-Month
41.3°F
(5.2°C)
39.7°F
(4.3°C)
1.6°F
(0.9°C)
96th Coolest Coolest since: 1948 1904
29th Warmest Warmest since: 1946 2012
Ties: 1896
Oct 1948–May 1949
8-Month
42.6°F
(5.9°C)
41.6°F
(5.3°C)
1.0°F
(0.6°C)
90th Coolest Coolest since: 1948 1904, 1978
35th Warmest Warmest since: 1946 2012
Ties: 1903, 1914, 1953, 1990, 2010, 2018
Sep 1948–May 1949
9-Month
45.5°F
(7.5°C)
44.4°F
(6.9°C)
1.1°F
(0.6°C)
98th Coolest Coolest since: 1948 1904
27th Warmest Warmest since: 1942 2012
Ties: 1934, 1957, 1983, 2018
Aug 1948–May 1949
10-Month
48.3°F
(9.1°C)
47.3°F
(8.5°C)
1.0°F
(0.6°C)
96th Coolest Coolest since: 1948 1904
29th Warmest Warmest since: 1948 2012
Ties: 1941, 1948, 1957, 2008
Jul 1948–May 1949
11-Month
50.7°F
(10.4°C)
49.8°F
(9.9°C)
0.9°F
(0.5°C)
91st Coolest Coolest since: 1948 1904
34th Warmest Warmest since: 1942 2012
Ties: 1957, 1972, 1995
Jun 1948–May 1949
12-Month
52.4°F
(11.3°C)
51.6°F
(10.9°C)
0.8°F
(0.4°C)
85th Coolest Coolest since: 1948 1904
40th Warmest Warmest since: 1942 2012
Ties: 1964, 2008, 2018
Dec 1947–May 1949
18-Month
48.1°F
(8.9°C)
47.6°F
(8.7°C)
0.5°F
(0.2°C)
80th Coolest Coolest since: 1948 1979
44th Warmest Warmest since: 1945 2017
Ties: 1921, 1938, 2019
Jun 1947–May 1949
24-Month
52.2°F
(11.2°C)
51.6°F
(10.9°C)
0.6°F
(0.3°C)
87th Coolest Coolest since: 1948 1905
37th Warmest Warmest since: 1943 2017
Ties: 1943, 1957
Jun 1946–May 1949
36-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
75th Coolest Coolest since: 1948 1979
48th Warmest Warmest since: 1946 2018
Ties: 1916, 1937, 1946, 1985, 2010, 2011
Jun 1945–May 1949
48-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
68th Coolest Coolest since: 1948 1980
54th Warmest Warmest since: 1945 2019
Ties: 1925
Jun 1944–May 1949
60-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
68th Coolest Coolest since: 1948 1906, 1907, 1908, 1981
53rd Warmest Warmest since: 1946 2002
Ties: 1944, 1950, 1954

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2019, retrieved on September 21, 2019 from https://www.ncdc.noaa.gov/cag/