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


Illinois

Average Temperature Rankings, September 1979

View Period (Months):All1234567891011121824364860
Download: xml csv json
  • Record Coolest
  • Bottom 1/10
  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
September 1979
1-Month
65.7°F
(18.7°C)
66.2°F
(19.0°C)
-0.5°F
(-0.3°C)
53rd Coolest Coolest since: 1976 1918
74th Warmest Warmest since: 1978 1925, 1933
Ties: 1901
Aug–Sep 1979
2-Month
69.1°F
(20.6°C)
69.8°F
(21.0°C)
-0.7°F
(-0.4°C)
40th Coolest Coolest since: 1976 1967
87th Warmest Warmest since: 1978 1936
Ties: 1952
Jul–Sep 1979
3-Month
70.7°F
(21.5°C)
71.8°F
(22.1°C)
-1.1°F
(-0.6°C)
34th Coolest Coolest since: 1976 1967
93rd Warmest Warmest since: 1978 1936
Ties: 1945
Jun–Sep 1979
4-Month
71.0°F
(21.7°C)
71.7°F
(22.1°C)
-0.7°F
(-0.4°C)
41st Coolest Coolest since: 1976 1915, 1924
86th Warmest Warmest since: 1978 1936
Ties: 1942, 1981
May–Sep 1979
5-Month
69.1°F
(20.6°C)
69.8°F
(21.0°C)
-0.7°F
(-0.4°C)
35th Coolest Coolest since: 1976 1924
92nd Warmest Warmest since: 1978 1936
Ties: 1920, 1963, 1969, 1982, 1990, 2008, 2014
Apr–Sep 1979
6-Month
65.7°F
(18.7°C)
66.7°F
(19.3°C)
-1.0°F
(-0.6°C)
29th Coolest Coolest since: 1976 1907
98th Warmest Warmest since: 1978 2010
Ties: 1918, 1958, 2009
Mar–Sep 1979
7-Month
62.0°F
(16.7°C)
62.9°F
(17.2°C)
-0.9°F
(-0.5°C)
33rd Coolest Coolest since: 1975 1924
94th Warmest Warmest since: 1978 2012
Ties: 1927
Feb–Sep 1979
8-Month
56.4°F
(13.6°C)
58.6°F
(14.8°C)
-2.2°F
(-1.2°C)
6th Coolest Coolest since: 1958 1904
121st Warmest Warmest since: 1978 2012
Ties: 1958
Jan–Sep 1979
9-Month
51.6°F
(10.9°C)
55.0°F
(12.8°C)
-3.4°F
(-1.9°C)
3rd Coolest Coolest since: 1912 1904, 1912
124th Warmest Warmest since: 1978 2012
Dec 1978–Sep 1979
10-Month
49.3°F
(9.6°C)
52.4°F
(11.3°C)
-3.1°F
(-1.7°C)
2nd Coolest Coolest since: 1904 1904
124th Warmest Warmest since: 1978 2012
Nov 1978–Sep 1979
11-Month
48.8°F
(9.3°C)
51.4°F
(10.8°C)
-2.6°F
(-1.5°C)
4th Coolest Coolest since: 1912 1904
122nd Warmest Warmest since: 1978 2012
Oct 1978–Sep 1979
12-Month
49.1°F
(9.5°C)
51.7°F
(10.9°C)
-2.6°F
(-1.4°C)
4th Coolest Coolest since: 1978 1904
122nd Warmest Warmest since: 1978 2012
Ties: 1978
Apr 1978–Sep 1979
18-Month
55.1°F
(12.8°C)
56.6°F
(13.7°C)
-1.5°F
(-0.9°C)
6th Coolest Coolest since: 1951 1904, 1918
120th Warmest Warmest since: 1978 2012
Oct 1977–Sep 1979
24-Month
49.1°F
(9.5°C)
51.6°F
(10.9°C)
-2.5°F
(-1.4°C)
1st Coolest Coolest to Date 1979
124th Warmest Warmest since: 1978 2017
Oct 1976–Sep 1979
36-Month
49.5°F
(9.7°C)
51.6°F
(10.9°C)
-2.1°F
(-1.2°C)
1st Coolest Coolest to Date 1979
123rd Warmest Warmest since: 1978 2018
Oct 1975–Sep 1979
48-Month
50.3°F
(10.2°C)
51.6°F
(10.9°C)
-1.3°F
(-0.7°C)
5th Coolest Coolest since: 1918 1905
118th Warmest Warmest since: 1978 2019
Ties: 1904, 1906
Oct 1974–Sep 1979
60-Month
50.5°F
(10.3°C)
51.6°F
(10.9°C)
-1.1°F
(-0.6°C)
7th Coolest Coolest since: 1908 1906
115th Warmest Warmest since: 1978 2020

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Statewide Time Series, published October 2020, retrieved on October 30, 2020 from https://www.ncdc.noaa.gov/cag/