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 1899

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Period Value 1901-2000
Mean
Amomaly Rank
(1895-2019)
Warmest/Coolest
Since
Record
May 1899
1-Month
63.2°F
(17.3°C)
62.1°F
(16.7°C)
1.1°F
(0.6°C)
76th Coolest Coolest since: 1898 1917
50th Warmest Warmest since: 1896 2018
Ties: 1906, 1930, 1980, 1993
Apr–May 1899
2-Month
57.9°F
(14.4°C)
56.8°F
(13.8°C)
1.1°F
(0.6°C)
84th Coolest Coolest since: 1898 1907
42nd Warmest Warmest since: 1896 1896
Ties: 1944, 1948
Mar–May 1899
3-Month
49.6°F
(9.8°C)
51.1°F
(10.6°C)
-1.5°F
(-0.8°C)
29th Coolest Coolest since: 1897 1960
97th Warmest Warmest since: 1898 2012
Ties: 1966, 1975
Feb–May 1899
4-Month
41.7°F
(5.4°C)
45.6°F
(7.6°C)
-3.9°F
(-2.2°C)
4th Coolest Coolest to Date 1978
122nd Warmest Warmest since: 1898 2012
Jan–May 1899
5-Month
38.4°F
(3.6°C)
41.6°F
(5.3°C)
-3.2°F
(-1.7°C)
8th Coolest Coolest since: 1895 1978, 1979
118th Warmest Warmest since: 1898 2012
Dec 1898–May 1899
6-Month
36.3°F
(2.4°C)
39.6°F
(4.2°C)
-3.3°F
(-1.8°C)
8th Coolest Coolest to Date 1978
117th Warmest Warmest since: 1898 2012
Nov 1898–May 1899
7-Month
36.3°F
(2.4°C)
39.8°F
(4.3°C)
-3.5°F
(-1.9°C)
5th Coolest Coolest to Date 1904
120th Warmest Warmest since: 1898 2012
Ties: 2014
Oct 1898–May 1899
8-Month
38.2°F
(3.4°C)
41.7°F
(5.4°C)
-3.5°F
(-2.0°C)
5th Coolest Coolest to Date 1904, 1978
120th Warmest Warmest since: 1898 2012
Sep 1898–May 1899
9-Month
41.6°F
(5.3°C)
44.4°F
(6.9°C)
-2.8°F
(-1.6°C)
5th Coolest Coolest to Date 1904
120th Warmest Warmest since: 1898 2012
Aug 1898–May 1899
10-Month
44.7°F
(7.1°C)
47.2°F
(8.4°C)
-2.5°F
(-1.3°C)
5th Coolest Coolest to Date 1904
120th Warmest Warmest since: 1898 2012
Jul 1898–May 1899
11-Month
47.5°F
(8.6°C)
49.9°F
(9.9°C)
-2.4°F
(-1.3°C)
5th Coolest Coolest to Date 1904
120th Warmest Warmest since: 1898 2012
Jun 1898–May 1899
12-Month
49.6°F
(9.8°C)
51.6°F
(10.9°C)
-2.0°F
(-1.1°C)
4th Coolest Coolest to Date 1904
121st Warmest Warmest since: 1898 2012
Ties: 1905, 1912, 1951, 1979, 2014
Dec 1897–May 1899
18-Month
46.3°F
(7.9°C)
47.6°F
(8.7°C)
-1.3°F
(-0.8°C)
9th Coolest Coolest to Date 1979
115th Warmest Warmest since: 1898 2017
Ties: 1970, 1997
Jun 1897–May 1899
24-Month
51.0°F
(10.6°C)
51.7°F
(10.9°C)
-0.7°F
(-0.3°C)
26th Coolest Coolest to Date 1905
98th Warmest Warmest since: 1898 2017
Ties: 1926, 1927, 1929, 1961
Jun 1896–May 1899
36-Month
50.8°F
(10.4°C)
51.6°F
(10.9°C)
-0.8°F
(-0.5°C)
12th Coolest Coolest to Date 1979
111th Warmest Warmest since: 1898 2018
Ties: 1912, 1913, 1960, 1971
Jun 1895–May 1899
48-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
30th Coolest Coolest to Date 1980
92nd Warmest Warmest to Date 2019
Ties: 1926, 1928

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published September 2019, retrieved on September 16, 2019 from https://www.ncdc.noaa.gov/cag/