September 1920 - May 1921 Illinois Divisional Average Temperature
-99
1901-2000 base period
Degrees Fahrenheit
128 years
1901-2000
1101
Northwest
1
11
Illinois
IL
44.8
4.3
125
40.6
1102
Northeast
2
11
Illinois
IL
45.3
4.3
125
41
1103
West
3
11
Illinois
IL
47.6
3.9
124
43.8
1104
Central
4
11
Illinois
IL
47.1
3.8
124
43.3
1105
East
5
11
Illinois
IL
46.7
3.7
124
43
1106
West Southwest
6
11
Illinois
IL
49.1
3.2
123
45.9
1107
East Southeast
7
11
Illinois
IL
49.3
3.3
124
46
1108
Southwest
8
11
Illinois
IL
51.4
2.8
123
48.5
1109
Southeast
9
11
Illinois
IL
51.6
2.9
124
48.6