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


Illinois

Average Temperature Rankings, September 1902

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1902
1-Month
61.6°F
(16.4°C)
66.2°F
(19.0°C)
-4.6°F
(-2.6°C)
5th Coolest Coolest to Date 1918
122nd Warmest Warmest since: 1901 1925, 1933
Ties: 1993
Aug–Sep 1902
2-Month
66.1°F
(18.9°C)
69.8°F
(21.0°C)
-3.7°F
(-2.1°C)
2nd Coolest Coolest to Date 1967
125th Warmest Warmest since: 1901 1936
Jul–Sep 1902
3-Month
69.2°F
(20.7°C)
71.8°F
(22.1°C)
-2.6°F
(-1.4°C)
7th Coolest Coolest to Date 1967
120th Warmest Warmest since: 1901 1936
Jun–Sep 1902
4-Month
69.0°F
(20.6°C)
71.6°F
(22.0°C)
-2.6°F
(-1.4°C)
5th Coolest Coolest to Date 1915, 1924
122nd Warmest Warmest since: 1901 1936
Ties: 1950
May–Sep 1902
5-Month
68.5°F
(20.3°C)
69.8°F
(21.0°C)
-1.3°F
(-0.7°C)
23rd Coolest Coolest to Date 1924
104th Warmest Warmest since: 1901 1936
Ties: 1981, 2009
Apr–Sep 1902
6-Month
65.3°F
(18.5°C)
66.7°F
(19.3°C)
-1.4°F
(-0.8°C)
17th Coolest Coolest to Date 1907
110th Warmest Warmest since: 1901 2010
Ties: 1910, 1935, 1974, 1996
Mar–Sep 1902
7-Month
61.9°F
(16.6°C)
62.9°F
(17.2°C)
-1.0°F
(-0.6°C)
29th Coolest Coolest to Date 1924
98th Warmest Warmest since: 1901 2012
Ties: 1923, 1965, 1989
Feb–Sep 1902
8-Month
56.6°F
(13.7°C)
58.7°F
(14.8°C)
-2.1°F
(-1.1°C)
9th Coolest Coolest to Date 1904
118th Warmest Warmest since: 1901 2012
Ties: 1960
Jan–Sep 1902
9-Month
53.1°F
(11.7°C)
54.9°F
(12.7°C)
-1.8°F
(-1.0°C)
11th Coolest Coolest to Date 1904, 1912
116th Warmest Warmest since: 1901 2012
Dec 1901–Sep 1902
10-Month
50.2°F
(10.1°C)
52.4°F
(11.3°C)
-2.2°F
(-1.2°C)
9th Coolest Coolest to Date 1904
117th Warmest Warmest since: 1901 2012
Nov 1901–Sep 1902
11-Month
49.0°F
(9.4°C)
51.3°F
(10.7°C)
-2.3°F
(-1.3°C)
7th Coolest Coolest to Date 1904
119th Warmest Warmest since: 1901 2012
Oct 1901–Sep 1902
12-Month
49.6°F
(9.8°C)
51.7°F
(10.9°C)
-2.1°F
(-1.1°C)
8th Coolest Coolest since: 1899 1904
118th Warmest Warmest since: 1901 2012
Ties: 1917
Apr 1901–Sep 1902
18-Month
55.5°F
(13.1°C)
56.6°F
(13.7°C)
-1.1°F
(-0.6°C)
13th Coolest Coolest since: 1899 1904, 1918
113th Warmest Warmest since: 1901 2012
Ties: 1929, 1962, 1968, 1993, 1997
Oct 1900–Sep 1902
24-Month
50.8°F
(10.4°C)
51.7°F
(10.9°C)
-0.9°F
(-0.5°C)
22nd Coolest Coolest since: 1900 1979
103rd Warmest Warmest since: 1901 2017
Ties: 1899, 1971
Oct 1899–Sep 1902
36-Month
51.2°F
(10.7°C)
51.6°F
(10.9°C)
-0.4°F
(-0.2°C)
33rd Coolest Coolest since: 1901 1979
91st Warmest Warmest since: 1900 2018
Ties: 1900, 1913, 1927, 1984, 1994
Oct 1898–Sep 1902
48-Month
50.7°F
(10.4°C)
51.6°F
(10.9°C)
-0.9°F
(-0.5°C)
11th Coolest Coolest to Date 1905
112th Warmest Warmest since: 1901 2019
Ties: 1929, 1963
Oct 1897–Sep 1902
60-Month
51.0°F
(10.6°C)
51.5°F
(10.8°C)
-0.5°F
(-0.2°C)
18th Coolest Coolest to Date 1906
104th Warmest Warmest since: 1901 2020
Ties: 1927, 1928, 1930, 1969

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published July 2021, retrieved on July 31, 2021 from https://www.ncdc.noaa.gov/cag/