Statewide Rankings

Statewide Data Info
Please note, Degree Days and Palmer Indices are not available for Alaska. Palmer Drought Severity Index (PDSI), Palmer Hydrological Drought Index (PHDI), and Palmer Modified Drought Index (PMDI) are not offered for multiple-month time scales.

Illinois

Average Temperature Rankings, July 2020

View Period (Months):
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  • Record Coolest
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  • Bottom 1/3
  • Normal
  • Top 1/3
  • Top 1/10
  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
July 2020
1-Month
77.3°F
(25.2°C)
75.6°F
(24.2°C)
1.7°F
(1.0°C)
102nd Coolest
Coolest since:
2009, 2014
27th Warmest
Warmest since:
1936
Ties: 1952, 1987
Jun–Jul 2020
2-Month
75.4°F
(24.1°C)
73.4°F
(23.0°C)
2.0°F
(1.1°C)
104th Coolest
Coolest since:
1915
25th Warmest
Warmest since:
1934
Ties: 1999
May–Jul 2020
3-Month
70.5°F
(21.4°C)
69.7°F
(20.9°C)
0.8°F
(0.5°C)
87th Coolest
Coolest since:
1924
42nd Warmest
Warmest since:
1934
Ties: 1943, 1975
Apr–Jul 2020
4-Month
65.3°F
(18.5°C)
65.2°F
(18.4°C)
0.1°F
(0.1°C)
66th Coolest
Coolest since:
1907
63rd Warmest
Warmest since:
1934
Ties: 1900, 1938
Mar–Jul 2020
5-Month
61.1°F
(16.2°C)
60.1°F
(15.6°C)
1.0°F
(0.6°C)
89th Coolest
Coolest since:
1960
40th Warmest
Warmest since:
2012
Ties: 1953, 1959
Feb–Jul 2020
6-Month
56.2°F
(13.4°C)
54.9°F
(12.7°C)
1.3°F
(0.7°C)
99th Coolest
Coolest since:
1947
30th Warmest
Warmest since:
2012
Ties: 2002
Jan–Jul 2020
7-Month
52.7°F
(11.5°C)
50.7°F
(10.4°C)
2.0°F
(1.1°C)
106th Coolest
Coolest since:
1912
23rd Warmest
Warmest since:
2012
Ties: 1932
Dec 2019–Jul 2020
8-Month
50.6°F
(10.3°C)
48.1°F
(8.9°C)
2.5°F
(1.4°C)
118th Coolest
Coolest since:
1904
10th Warmest
Warmest since:
2012
Ties: 1934, 1954, 1999, 2006
Nov 2019–Jul 2020
9-Month
49.0°F
(9.4°C)
47.3°F
(8.5°C)
1.7°F
(0.9°C)
106th Coolest
Coolest since:
1904
22nd Warmest
Warmest since:
2012
Ties: 1949, 1983, 2004
Oct 2019–Jul 2020
10-Month
49.5°F
(9.7°C)
48.0°F
(8.9°C)
1.5°F
(0.8°C)
104th Coolest
Coolest since:
1904
24th Warmest
Warmest since:
2012
Ties: 2007
Sep 2019–Jul 2020
11-Month
51.5°F
(10.8°C)
49.7°F
(9.8°C)
1.8°F
(1.0°C)
111th Coolest
Coolest since:
1904
17th Warmest
Warmest since:
2012
Aug 2019–Jul 2020
12-Month
53.3°F
(11.8°C)
51.7°F
(10.9°C)
1.6°F
(0.9°C)
109th Coolest
Coolest since:
1904
19th Warmest
Warmest since:
2012
Feb 2019–Jul 2020
18-Month
53.8°F
(12.1°C)
52.7°F
(11.5°C)
1.1°F
(0.6°C)
98th Coolest
Coolest since:
1918
30th Warmest
Warmest since:
2012
Ties: 1974
Aug 2018–Jul 2020
24-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
98th Coolest
Coolest since:
1905
29th Warmest
Warmest since:
2017
Ties: 2008
Aug 2017–Jul 2020
36-Month
52.6°F
(11.4°C)
51.6°F
(10.9°C)
1.0°F
(0.5°C)
101st Coolest
Coolest since:
1979
25th Warmest
Warmest since:
2018
Ties: 1935, 1939, 1987, 1989, 1991, 2021
Aug 2016–Jul 2020
48-Month
53.3°F
(11.8°C)
51.6°F
(10.9°C)
1.7°F
(0.9°C)
120th Coolest
Coolest since:
1905, 1980
5th Warmest
Warmest since:
2019
Ties: 2007, 2013
Aug 2015–Jul 2020
60-Month
53.7°F
(12.1°C)
51.6°F
(10.9°C)
2.1°F
(1.2°C)
123rd Coolest
Coolest since:
1906
1st Warmest
Warmest to Date
2020

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