August 1998 - July 1999 Illinois Divisional Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
128 years
1901-2000
1101
Northwest
1
11
Illinois
IL
51.5
3.3
124
48.2
1102
Northeast
2
11
Illinois
IL
51.9
3.4
124
48.5
1103
West
3
11
Illinois
IL
53.9
2.6
123
51.3
1104
Central
4
11
Illinois
IL
53.5
2.8
123
50.7
1105
East
5
11
Illinois
IL
53.4
3.1
123
50.3
1106
West Southwest
6
11
Illinois
IL
55.5
2.4
121
53.1
1107
East Southeast
7
11
Illinois
IL
55.6
2.6
123
53.1
1108
Southwest
8
11
Illinois
IL
57.8
2.4
123
55.4
1109
Southeast
9
11
Illinois
IL
57.7
2.2
123
55.4