Climate at a Glance

Divisional 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 July 2020. For more information, please see Climatological Rankings.


Illinois, Climate Division 3. West

Average Temperature Rankings, September 1999

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
(1895-2019)
Warmest/Coolest
Since
Record
September 1999
1-Month
64.0°F
(17.8°C)
66.1°F
(18.9°C)
-2.1°F
(-1.1°C)
26th Coolest Coolest since: 1996 1918
100th Warmest Warmest since: 1998 1931, 1933
Ties: 1909
Aug–Sep 1999
2-Month
67.8°F
(19.9°C)
69.9°F
(21.1°C)
-2.1°F
(-1.2°C)
14th Coolest Coolest since: 1993 1967
112th Warmest Warmest since: 1998 1936
Ties: 1982, 2004, 2009
Jul–Sep 1999
3-Month
71.4°F
(21.9°C)
71.9°F
(22.2°C)
-0.5°F
(-0.3°C)
48th Coolest Coolest since: 1997 1967
78th Warmest Warmest since: 1998 1936
Ties: 1899
Jun–Sep 1999
4-Month
71.5°F
(21.9°C)
71.8°F
(22.1°C)
-0.3°F
(-0.2°C)
51st Coolest Coolest since: 1997 1992
75th Warmest Warmest since: 1998 1936
May–Sep 1999
5-Month
70.0°F
(21.1°C)
69.9°F
(21.1°C)
0.1°F
(0.0°C)
66th Coolest Coolest since: 1997 1924, 1967
60th Warmest Warmest since: 1998 1936
Ties: 1970, 2013
Apr–Sep 1999
6-Month
67.3°F
(19.6°C)
66.8°F
(19.3°C)
0.5°F
(0.3°C)
75th Coolest Coolest since: 1997 1907
51st Warmest Warmest since: 1998 1936
Ties: 1937, 1956
Mar–Sep 1999
7-Month
63.1°F
(17.3°C)
62.8°F
(17.1°C)
0.3°F
(0.2°C)
69th Coolest Coolest since: 1997 1924
57th Warmest Warmest since: 1998 1936
Ties: 2002
Feb–Sep 1999
8-Month
59.9°F
(15.5°C)
58.5°F
(14.7°C)
1.4°F
(0.8°C)
102nd Coolest Coolest since: 1997 1904
24th Warmest Warmest since: 1998 2012
Ties: 1946, 1953
Jan–Sep 1999
9-Month
55.7°F
(13.2°C)
54.6°F
(12.6°C)
1.1°F
(0.6°C)
89th Coolest Coolest since: 1997 1904
37th Warmest Warmest since: 1998 2012
Ties: 2010, 2018
Dec 1998–Sep 1999
10-Month
53.6°F
(12.0°C)
52.1°F
(11.2°C)
1.5°F
(0.8°C)
98th Coolest Coolest since: 1997 1904
27th Warmest Warmest since: 1998 2012
Ties: 1930
Nov 1998–Sep 1999
11-Month
52.8°F
(11.6°C)
51.0°F
(10.6°C)
1.8°F
(1.0°C)
105th Coolest Coolest since: 1997 1904
20th Warmest Warmest since: 1998 2012
Ties: 1953
Oct 1998–Sep 1999
12-Month
53.0°F
(11.7°C)
51.2°F
(10.7°C)
1.8°F
(1.0°C)
106th Coolest Coolest since: 1997 1904
19th Warmest Warmest since: 1998 2012
Ties: 1914
Apr 1998–Sep 1999
18-Month
58.2°F
(14.6°C)
56.4°F
(13.6°C)
1.8°F
(1.0°C)
112th Coolest Coolest since: 1998 1904
13th Warmest Warmest since: 1987 2012
Ties: 1942, 1955, 2000
Oct 1997–Sep 1999
24-Month
53.3°F
(11.8°C)
51.2°F
(10.7°C)
2.1°F
(1.1°C)
116th Coolest Coolest since: 1998 1979
8th Warmest Warmest since: 1955 2017
Ties: 1933, 1955, 2000
Oct 1996–Sep 1999
36-Month
52.2°F
(11.2°C)
51.3°F
(10.7°C)
0.9°F
(0.5°C)
99th Coolest Coolest since: 1998 1979
24th Warmest Warmest since: 1992 2018
Ties: 1941, 1989, 1992
Oct 1995–Sep 1999
48-Month
51.5°F
(10.8°C)
51.3°F
(10.7°C)
0.2°F
(0.1°C)
74th Coolest Coolest since: 1998 1905
48th Warmest Warmest since: 1993 1934
Ties: 1911, 1914, 1925, 1958, 1986, 2010
Oct 1994–Sep 1999
60-Month
51.6°F
(10.9°C)
51.2°F
(10.7°C)
0.4°F
(0.2°C)
77th Coolest Coolest since: 1998 1906, 1982
44th Warmest Warmest since: 1992 1934
Ties: 1940, 1944, 1954

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published August 2020, retrieved on August 10, 2020 from https://www.ncdc.noaa.gov/cag/