May - June 1978 Illinois Divisional Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
129 years
1901-2000
1101
Northwest
1
11
Illinois
IL
64.4
-0.1
56
64.4
1102
Northeast
2
11
Illinois
IL
63.9
0.1
59
63.8
1103
West
3
11
Illinois
IL
66.4
-0.6
45
66.9
1104
Central
4
11
Illinois
IL
66.2
-0.1
58
66.3
1105
East
5
11
Illinois
IL
65.6
-0.1
56
65.7
1106
West Southwest
6
11
Illinois
IL
67.6
-0.4
47
68
1107
East Southeast
7
11
Illinois
IL
66.9
-0.9
40
67.8
1108
Southwest
8
11
Illinois
IL
68.8
-0.7
41
69.5
1109
Southeast
9
11
Illinois
IL
68.7
-0.7
41
69.4