Chicago, Illinois 18-Month Period Ending in January Average Temperature
Degrees Fahrenheit
1961-2000
-99
196101
48.2
-0.7
196201
48.4
-0.5
196301
47.8
-1.1
196401
48.1
-0.8
196501
48.8
-0.1
196601
47.7
-1.2
196701
49.1
0.2
196801
47.9
-1.0
196901
48.4
-0.5
197001
48.0
-0.9
197101
48.3
-0.6
197201
49.5
0.6
197301
48.7
-0.2
197401
49.5
0.6
197501
49.4
0.5
197601
49.0
0.1
197701
47.8
-1.1
197801
47.1
-1.8
197901
46.4
-2.5
198001
47.9
-1.0
198101
48.8
-0.1
198201
48.5
-0.4
198301
48.4
-0.5
198401
49.6
0.7
198501
48.5
-0.4
198601
48.7
-0.2
198701
49.1
0.2
198801
51.0
2.1
198901
50.4
1.5
199001
49.3
0.4
199101
49.9
1.0
199201
51.2
2.3
199301
49.1
0.2
199401
47.8
-1.1
199501
49.2
0.3
199601
50.2
1.3
199701
47.5
-1.4
199801
48.7
-0.2
199901
52.0
3.1
200001
51.7
2.8
200101
50.0
1.1
200201
50.1
1.2
200301
50.9
2.0
200401
48.9
0.0
200501
50.1
1.2
200601
51.5
2.6