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


Illinois

Average Temperature Rankings, September 1984

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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1984
1-Month
64.3°F
(17.9°C)
66.2°F
(19.0°C)
-1.9°F
(-1.1°C)
27th Coolest Coolest since: 1976 1918
100th Warmest Warmest since: 1983 1925, 1933
Ties: 1992
Aug–Sep 1984
2-Month
69.5°F
(20.8°C)
69.8°F
(21.0°C)
-0.3°F
(-0.2°C)
56th Coolest Coolest since: 1982 1967
71st Warmest Warmest since: 1983 1936
Ties: 2001
Jul–Sep 1984
3-Month
70.8°F
(21.6°C)
71.8°F
(22.1°C)
-1.0°F
(-0.5°C)
36th Coolest Coolest since: 1982 1967
91st Warmest Warmest since: 1983 1936
Ties: 1958, 1997
Jun–Sep 1984
4-Month
71.7°F
(22.1°C)
71.6°F
(22.0°C)
0.1°F
(0.1°C)
59th Coolest Coolest since: 1982 1915, 1924
68th Warmest Warmest since: 1983 1936
Ties: 1956, 1970, 2006
May–Sep 1984
5-Month
69.2°F
(20.7°C)
69.7°F
(20.9°C)
-0.5°F
(-0.2°C)
43rd Coolest Coolest since: 1982 1924
84th Warmest Warmest since: 1983 1936
Ties: 1912, 1942
Apr–Sep 1984
6-Month
66.0°F
(18.9°C)
66.7°F
(19.3°C)
-0.7°F
(-0.4°C)
33rd Coolest Coolest since: 1982 1907
94th Warmest Warmest since: 1983 2010
Ties: 1946, 1975, 1990, 1993
Mar–Sep 1984
7-Month
61.3°F
(16.3°C)
62.9°F
(17.2°C)
-1.6°F
(-0.9°C)
13th Coolest Coolest since: 1967 1924
114th Warmest Warmest since: 1983 2012
Ties: 1967
Feb–Sep 1984
8-Month
58.1°F
(14.5°C)
58.6°F
(14.8°C)
-0.5°F
(-0.3°C)
43rd Coolest Coolest since: 1982 1904
84th Warmest Warmest since: 1983 2012
Ties: 1937, 1997, 2003, 2015
Jan–Sep 1984
9-Month
54.1°F
(12.3°C)
54.9°F
(12.7°C)
-0.8°F
(-0.4°C)
32nd Coolest Coolest since: 1982 1904, 1912
95th Warmest Warmest since: 1983 2012
Ties: 1928, 1971
Dec 1983–Sep 1984
10-Month
50.4°F
(10.2°C)
52.4°F
(11.3°C)
-2.0°F
(-1.1°C)
12th Coolest Coolest since: 1982 1904
114th Warmest Warmest since: 1983 2012
Nov 1983–Sep 1984
11-Month
49.9°F
(9.9°C)
51.4°F
(10.8°C)
-1.5°F
(-0.9°C)
15th Coolest Coolest since: 1982 1904
111th Warmest Warmest since: 1983 2012
Ties: 1915, 1940
Oct 1983–Sep 1984
12-Month
50.3°F
(10.2°C)
51.6°F
(10.9°C)
-1.3°F
(-0.7°C)
16th Coolest Coolest since: 1982 1904
110th Warmest Warmest since: 1983 2012
Ties: 1905, 1958, 1960, 1977
Apr 1983–Sep 1984
18-Month
55.9°F
(13.3°C)
56.6°F
(13.7°C)
-0.7°F
(-0.4°C)
29th Coolest Coolest since: 1982 1904, 1918
97th Warmest Warmest since: 1983 2012
Ties: 1928
Oct 1982–Sep 1984
24-Month
51.9°F
(11.1°C)
51.6°F
(10.9°C)
0.3°F
(0.2°C)
79th Coolest Coolest since: 1983 1979
46th Warmest Warmest since: 1976 2017
Ties: 1940, 1947, 1957, 1974, 1995
Oct 1981–Sep 1984
36-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
33rd Coolest Coolest since: 1982 1979
91st Warmest Warmest since: 1983 2018
Ties: 1900, 1902, 1913, 1927, 1994
Oct 1980–Sep 1984
48-Month
51.3°F
(10.7°C)
51.6°F
(10.9°C)
-0.3°F
(-0.2°C)
34th Coolest Coolest since: 1982 1905
89th Warmest Warmest since: 1983 2019
Ties: 1900, 1903, 1909, 1928, 1930, 1951, 1960, 1964, 1965
Oct 1979–Sep 1984
60-Month
51.4°F
(10.8°C)
51.6°F
(10.9°C)
-0.2°F
(-0.1°C)
41st Coolest Coolest since: 1983 1906
81st Warmest Warmest since: 1977 2020
Ties: 1901, 1915, 1917, 1921, 1926, 1951, 1968, 1985, 1996

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published January 2021, retrieved on January 19, 2021 from https://www.ncdc.noaa.gov/cag/