Divisional Rankings

Divisional 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, Climate Division 8. Southwest

Average Temperature Rankings, June 1978

View Period (Months):
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  • Record Warmest
Period Value 1901-2000
Mean
Anomaly Rank
(1895-2022)
Warmest/Coolest
Since
Record
June 1978
1-Month
74.0°F
(23.3°C)
73.9°F
(23.3°C)
0.1°F
(0.0°C)
55th Coolest
Coolest since:
1903
74th Warmest
Warmest since:
1952
Ties: 1897, 1937, 1942, 1948, 1959, 1965, 1996
May–Jun 1978
2-Month
68.8°F
(20.4°C)
69.5°F
(20.8°C)
-0.7°F
(-0.4°C)
41st Coolest
Coolest since:
1907
88th Warmest
Warmest since:
2018
Ties: 1919, 1948, 1985
Apr–Jun 1978
3-Month
65.0°F
(18.3°C)
64.8°F
(18.2°C)
0.2°F
(0.1°C)
58th Coolest
Coolest since:
1907
71st Warmest
Warmest since:
2010
Ties: 1908, 1918, 1967
Mar–Jun 1978
4-Month
58.4°F
(14.7°C)
59.7°F
(15.4°C)
-1.3°F
(-0.7°C)
26th Coolest
Coolest since:
1960
103rd Warmest
Warmest since:
2012
Ties: 1915, 1931
Feb–Jun 1978
5-Month
51.1°F
(10.6°C)
54.8°F
(12.7°C)
-3.7°F
(-2.1°C)
1st Coolest
Coolest since:
1912, 1960, 1978
128th Warmest
Warmest since:
2012
Ties: 1912, 1960
Jan–Jun 1978
6-Month
46.0°F
(7.8°C)
50.7°F
(10.4°C)
-4.7°F
(-2.6°C)
1st Coolest
Coolest since:
1912, 1978
128th Warmest
Warmest since:
2012
Ties: 1912
Dec 1977–Jun 1978
7-Month
44.0°F
(6.7°C)
48.4°F
(9.1°C)
-4.4°F
(-2.4°C)
1st Coolest
Coolest since:
1978
127th Warmest
Warmest since:
2012
Nov 1977–Jun 1978
8-Month
44.3°F
(6.8°C)
48.0°F
(8.9°C)
-3.7°F
(-2.1°C)
2nd Coolest
Coolest since:
1912
126th Warmest
Warmest since:
2012
Oct 1977–Jun 1978
9-Month
45.5°F
(7.5°C)
49.1°F
(9.5°C)
-3.6°F
(-2.0°C)
1st Coolest
Coolest since:
1912, 1978
127th Warmest
Warmest since:
2012
Ties: 1912
Sep 1977–Jun 1978
10-Month
48.0°F
(8.9°C)
51.1°F
(10.6°C)
-3.1°F
(-1.7°C)
1st Coolest
Coolest since:
1978
127th Warmest
Warmest since:
2012
Aug 1977–Jun 1978
11-Month
50.5°F
(10.3°C)
53.3°F
(11.8°C)
-2.8°F
(-1.5°C)
1st Coolest
Coolest since:
1904, 1978
127th Warmest
Warmest since:
2012
Ties: 1904
Jul 1977–Jun 1978
12-Month
52.9°F
(11.6°C)
55.4°F
(13.0°C)
-2.5°F
(-1.4°C)
1st Coolest
Coolest since:
1904, 1912, 1918, 1978
127th Warmest
Warmest since:
2012
Ties: 1904, 1912, 1918
Jan 1977–Jun 1978
18-Month
52.2°F
(11.2°C)
53.9°F
(12.2°C)
-1.7°F
(-1.0°C)
6th Coolest
Coolest since:
1979
122nd Warmest
Warmest since:
2017
Ties: 1913
Jul 1976–Jun 1978
24-Month
53.1°F
(11.7°C)
55.4°F
(13.0°C)
-2.3°F
(-1.3°C)
1st Coolest
Coolest since:
1978, 1979
126th Warmest
Warmest since:
2017
Ties: 1979
Jul 1975–Jun 1978
36-Month
54.1°F
(12.3°C)
55.4°F
(13.0°C)
-1.3°F
(-0.7°C)
6th Coolest
Coolest since:
1979
120th Warmest
Warmest since:
2018
Ties: 1918
Jul 1974–Jun 1978
48-Month
54.3°F
(12.4°C)
55.4°F
(13.0°C)
-1.1°F
(-0.6°C)
8th Coolest
Coolest since:
1980
117th Warmest
Warmest since:
2019
Ties: 1970
Jul 1973–Jun 1978
60-Month
54.7°F
(12.6°C)
55.3°F
(12.9°C)
-0.6°F
(-0.3°C)
15th Coolest
Coolest since:
1980
109th Warmest
Warmest since:
2020
Ties: 1904, 1963, 1969

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