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


Illinois, Climate Division 3. West

Average Temperature Rankings, August 1999

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Period Value 1901-2000
Mean
Anomaly Rank
(1895-2020)
Warmest/Coolest
Since
Record
August 1999
1-Month
71.6°F
(22.0°C)
73.6°F
(23.1°C)
-2.0°F
(-1.1°C)
25th Coolest Coolest since: 1997 1915
102nd Warmest Warmest since: 1998 1947
Ties: 1965, 1971
Jul–Aug 1999
2-Month
75.1°F
(23.9°C)
74.8°F
(23.8°C)
0.3°F
(0.1°C)
83rd Coolest Coolest since: 1997 1915
44th Warmest Warmest since: 1998 1936
Ties: 1932, 1940, 2003, 2018
Jun–Aug 1999
3-Month
74.0°F
(23.3°C)
73.7°F
(23.2°C)
0.3°F
(0.1°C)
74th Coolest Coolest since: 1998 1915
53rd Warmest Warmest since: 1998 1936
Ties: 1935, 1998
May–Aug 1999
4-Month
71.5°F
(21.9°C)
70.9°F
(21.6°C)
0.6°F
(0.3°C)
80th Coolest Coolest since: 1997 1915
47th Warmest Warmest since: 1998 1934
Ties: 1931
Apr–Aug 1999
5-Month
68.0°F
(20.0°C)
67.0°F
(19.4°C)
1.0°F
(0.6°C)
95th Coolest Coolest since: 1997 1907
32nd Warmest Warmest since: 1998 1934
Ties: 1922, 1932, 1962, 1986
Mar–Aug 1999
6-Month
63.0°F
(17.2°C)
62.3°F
(16.8°C)
0.7°F
(0.4°C)
85th Coolest Coolest since: 1997 1950
42nd Warmest Warmest since: 1998 2012
Ties: 1939, 1953, 1964, 1983, 2001
Feb–Aug 1999
7-Month
59.3°F
(15.2°C)
57.4°F
(14.1°C)
1.9°F
(1.1°C)
110th Coolest Coolest since: 1997 1904
17th Warmest Warmest since: 1998 2012
Jan–Aug 1999
8-Month
54.7°F
(12.6°C)
53.2°F
(11.8°C)
1.5°F
(0.8°C)
102nd Coolest Coolest since: 1997 1904
25th Warmest Warmest since: 1998 2012
Ties: 1919, 1925, 1930
Dec 1998–Aug 1999
9-Month
52.4°F
(11.3°C)
50.5°F
(10.3°C)
1.9°F
(1.0°C)
108th Coolest Coolest since: 1997 1904
18th Warmest Warmest since: 1998 2012
Ties: 1914
Nov 1998–Aug 1999
10-Month
51.6°F
(10.9°C)
49.4°F
(9.7°C)
2.2°F
(1.2°C)
110th Coolest Coolest since: 1997 1904
16th Warmest Warmest since: 1998 2012
Ties: 1983
Oct 1998–Aug 1999
11-Month
52.0°F
(11.1°C)
49.9°F
(9.9°C)
2.1°F
(1.2°C)
111th Coolest Coolest since: 1997 1904
15th Warmest Warmest since: 1998 2012
Sep 1998–Aug 1999
12-Month
53.6°F
(12.0°C)
51.3°F
(10.7°C)
2.3°F
(1.3°C)
116th Coolest Coolest since: 1998 1904
10th Warmest Warmest since: 1987 2012
Mar 1998–Aug 1999
18-Month
56.8°F
(13.8°C)
54.9°F
(12.7°C)
1.9°F
(1.1°C)
116th Coolest Coolest since: 1998 1904
10th Warmest Warmest since: 1987 2012
Ties: 1921, 1954
Sep 1997–Aug 1999
24-Month
53.4°F
(11.9°C)
51.2°F
(10.7°C)
2.2°F
(1.2°C)
118th Coolest Coolest since: 1998 1979
7th Warmest Warmest since: 1932 2017
Ties: 2018
Sep 1996–Aug 1999
36-Month
52.2°F
(11.2°C)
51.3°F
(10.7°C)
0.9°F
(0.5°C)
100th Coolest Coolest since: 1998 1979
24th Warmest Warmest since: 1989 2018
Ties: 1939, 1941, 1943, 1957
Sep 1995–Aug 1999
48-Month
51.4°F
(10.8°C)
51.2°F
(10.7°C)
0.2°F
(0.1°C)
70th Coolest Coolest since: 1998 1905
53rd Warmest Warmest since: 1993 1934
Ties: 1911, 1925, 1945, 1948, 1986, 2010
Sep 1994–Aug 1999
60-Month
51.6°F
(10.9°C)
51.2°F
(10.7°C)
0.4°F
(0.2°C)
75th Coolest Coolest since: 1998 1906
47th Warmest Warmest since: 1992 1934, 1935
Ties: 1940, 1949

Citing This Page

  • NOAA National Centers for Environmental information, Climate at a Glance: Divisional Time Series, published October 2020, retrieved on October 19, 2020 from https://www.ncdc.noaa.gov/cag/