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


Illinois

Average Temperature Rankings, September 1997

View Period (Months):All1234567891011121824364860
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1997
1-Month
66.3°F
(19.1°C)
66.2°F
(19.0°C)
0.1°F
(0.1°C)
66th Coolest Coolest since: 1996 1918
61st Warmest Warmest since: 1991 1925, 1933
Ties: 1964, 2000
Aug–Sep 1997
2-Month
68.6°F
(20.3°C)
69.8°F
(21.0°C)
-1.2°F
(-0.7°C)
32nd Coolest Coolest since: 1994 1967
95th Warmest Warmest since: 1996 1936
Ties: 1963, 1985
Jul–Sep 1997
3-Month
70.8°F
(21.6°C)
71.7°F
(22.1°C)
-0.9°F
(-0.5°C)
36th Coolest Coolest since: 1996 1967
91st Warmest Warmest since: 1995 1936
Ties: 1958, 1984
Jun–Sep 1997
4-Month
70.8°F
(21.6°C)
71.7°F
(22.1°C)
-0.9°F
(-0.5°C)
35th Coolest Coolest since: 1996 1915, 1924
92nd Warmest Warmest since: 1995 1936
Ties: 1969, 1972
May–Sep 1997
5-Month
68.1°F
(20.1°C)
69.7°F
(20.9°C)
-1.6°F
(-0.8°C)
16th Coolest Coolest since: 1992 1924
111th Warmest Warmest since: 1996 1936
Apr–Sep 1997
6-Month
64.7°F
(18.2°C)
66.7°F
(19.3°C)
-2.0°F
(-1.1°C)
9th Coolest Coolest since: 1992 1907
118th Warmest Warmest since: 1996 2010
Mar–Sep 1997
7-Month
61.6°F
(16.4°C)
62.9°F
(17.2°C)
-1.3°F
(-0.8°C)
17th Coolest Coolest since: 1996 1924
110th Warmest Warmest since: 1995 2012
Ties: 1909
Feb–Sep 1997
8-Month
58.1°F
(14.5°C)
58.7°F
(14.8°C)
-0.6°F
(-0.3°C)
43rd Coolest Coolest since: 1996 1904
84th Warmest Warmest since: 1995 2012
Ties: 1937, 1984, 2003, 2015
Jan–Sep 1997
9-Month
54.0°F
(12.2°C)
54.9°F
(12.7°C)
-0.9°F
(-0.5°C)
29th Coolest Coolest since: 1996 1904, 1912
98th Warmest Warmest since: 1995 2012
Ties: 1962, 1969
Dec 1996–Sep 1997
10-Month
51.7°F
(10.9°C)
52.5°F
(11.4°C)
-0.8°F
(-0.5°C)
34th Coolest Coolest since: 1996 1904
92nd Warmest Warmest since: 1995 2012
Ties: 1950, 1960, 1994
Nov 1996–Sep 1997
11-Month
50.1°F
(10.1°C)
51.3°F
(10.7°C)
-1.2°F
(-0.6°C)
21st Coolest Coolest since: 1996 1904
105th Warmest Warmest since: 1995 2012
Oct 1996–Sep 1997
12-Month
50.5°F
(10.3°C)
51.6°F
(10.9°C)
-1.1°F
(-0.6°C)
21st Coolest Coolest since: 1996 1904
105th Warmest Warmest since: 1995 2012
Ties: 1907, 1915, 1940, 1970
Apr 1996–Sep 1997
18-Month
55.5°F
(13.1°C)
56.7°F
(13.7°C)
-1.2°F
(-0.6°C)
13th Coolest Coolest since: 1993 1904, 1918
113th Warmest Warmest since: 1996 2012
Ties: 1902, 1929, 1962, 1968, 1993
Oct 1995–Sep 1997
24-Month
50.3°F
(10.2°C)
51.6°F
(10.9°C)
-1.3°F
(-0.7°C)
7th Coolest Coolest since: 1979 1979
118th Warmest Warmest since: 1996 2017
Ties: 1927
Oct 1994–Sep 1997
36-Month
51.3°F
(10.7°C)
51.6°F
(10.9°C)
-0.3°F
(-0.2°C)
39th Coolest Coolest since: 1996 1979
85th Warmest Warmest since: 1996 2018
Ties: 1908, 1909, 1914, 1964, 1972, 1996
Oct 1993–Sep 1997
48-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
24th Coolest Coolest since: 1982 1905
99th Warmest Warmest since: 1996 2019
Ties: 1899, 1913, 1915, 1917, 1926, 1968
Oct 1992–Sep 1997
60-Month
51.1°F
(10.6°C)
51.6°F
(10.9°C)
-0.5°F
(-0.3°C)
23rd Coolest Coolest since: 1983 1906
99th Warmest Warmest since: 1996 2020
Ties: 1909, 1912, 1964, 1978, 1983

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published June 2021, retrieved on June 15, 2021 from https://www.ncdc.noaa.gov/cag/