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 April 2021. For more information, please see Climatological Rankings.


Illinois

Average Temperature Rankings, September 1898

View Period (Months):All123456789101112182436
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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1898
1-Month
68.9°F
(20.5°C)
66.2°F
(19.0°C)
2.7°F
(1.5°C)
100th Coolest Coolest since: 1896 1918
27th Warmest Warmest since: 1897 1925, 1933
Aug–Sep 1898
2-Month
71.0°F
(21.7°C)
69.8°F
(21.0°C)
1.2°F
(0.7°C)
91st Coolest Coolest since: 1896 1967
36th Warmest Warmest since: 1897 1936
Ties: 1953, 1995
Jul–Sep 1898
3-Month
72.3°F
(22.4°C)
71.7°F
(22.1°C)
0.6°F
(0.3°C)
78th Coolest Coolest since: 1896 1967
49th Warmest Warmest since: 1897 1936
Ties: 1948, 1977
Jun–Sep 1898
4-Month
72.5°F
(22.5°C)
71.7°F
(22.1°C)
0.8°F
(0.4°C)
84th Coolest Coolest since: 1896 1915, 1924
43rd Warmest Warmest since: 1897 1936
May–Sep 1898
5-Month
70.3°F
(21.3°C)
69.7°F
(20.9°C)
0.6°F
(0.4°C)
80th Coolest Coolest since: 1897 1924
47th Warmest Warmest since: 1896 1936
Ties: 1896, 1906
Apr–Sep 1898
6-Month
66.8°F
(19.3°C)
66.7°F
(19.3°C)
0.1°F
(0.0°C)
67th Coolest Coolest since: 1897 1907
60th Warmest Warmest since: 1896 2010
Ties: 1908, 1937, 1949, 1957, 1995, 2000
Mar–Sep 1898
7-Month
63.3°F
(17.4°C)
62.9°F
(17.2°C)
0.4°F
(0.2°C)
72nd Coolest Coolest since: 1897 1924
55th Warmest Warmest since: 1896 2012
Ties: 1901, 1944, 1948, 1952, 1980
Feb–Sep 1898
8-Month
59.1°F
(15.1°C)
58.6°F
(14.8°C)
0.5°F
(0.3°C)
75th Coolest Coolest since: 1897 1904
52nd Warmest Warmest since: 1896 2012
Jan–Sep 1898
9-Month
55.8°F
(13.2°C)
54.9°F
(12.7°C)
0.9°F
(0.5°C)
85th Coolest Coolest since: 1897 1904, 1912
42nd Warmest Warmest since: 1896 2012
Dec 1897–Sep 1898
10-Month
52.8°F
(11.6°C)
52.4°F
(11.3°C)
0.4°F
(0.3°C)
73rd Coolest Coolest since: 1897 1904
53rd Warmest Warmest since: 1896 2012
Ties: 1981
Nov 1897–Sep 1898
11-Month
51.6°F
(10.9°C)
51.3°F
(10.7°C)
0.3°F
(0.2°C)
70th Coolest Coolest since: 1897 1904
56th Warmest Warmest since: 1896 2012
Ties: 1959, 1964
Oct 1897–Sep 1898
12-Month
52.3°F
(11.3°C)
51.6°F
(10.9°C)
0.7°F
(0.4°C)
86th Coolest Coolest since: 1897 1904
40th Warmest Warmest to Date 2012
Ties: 1913, 1949, 1972, 1986, 1990
Apr 1897–Sep 1898
18-Month
57.0°F
(13.9°C)
56.6°F
(13.7°C)
0.4°F
(0.2°C)
73rd Coolest Coolest since: 1897 1904, 1918
53rd Warmest Warmest since: 1896 2012
Ties: 1896, 1913, 1989
Oct 1896–Sep 1898
24-Month
51.8°F
(11.0°C)
51.6°F
(10.9°C)
0.2°F
(0.1°C)
73rd Coolest Coolest since: 1897 1979
52nd Warmest Warmest to Date 2017
Ties: 1941, 1948, 1950, 1965, 1972, 1989, 2004
Oct 1895–Sep 1898
36-Month
51.7°F
(10.9°C)
51.6°F
(10.9°C)
0.1°F
(0.0°C)
67th Coolest Coolest to Date 1979
57th Warmest Warmest to Date 2018
Ties: 1911, 1946, 1966, 1975

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published May 2021, retrieved on May 11, 2021 from https://www.ncdc.noaa.gov/cag/