Rockford, Illinois August-March Average Temperature
Degrees Fahrenheit
1952-1988
-99
195203
39.6
-1.3
195303
42.0
1.1
195403
43.5
2.6
195503
41.3
0.4
195603
41.3
0.4
195703
41.9
1.0
195803
40.0
-0.9
195903
39.6
-1.3
196003
39.9
-1.0
196103
42.4
1.5
196203
39.6
-1.3
196303
39.4
-1.5
196403
42.8
1.9
196503
39.3
-1.6
196603
42.1
1.2
196703
41.3
0.4
196803
40.9
0.0
196903
41.3
0.4
197003
39.4
-1.5
197103
40.8
-0.1
197203
42.5
1.6
197303
42.5
1.6
197403
42.6
1.7
197503
40.6
-0.3
197603
43.1
2.2
197703
36.9
-4.0
197803
37.1
-3.8
197903
38.5
-2.4
198003
40.2
-0.7
198103
42.0
1.1
198203
39.0
-1.9
198303
43.8
2.9
198403
40.6
-0.3
198503
41.3
0.4
198603
40.1
-0.8
198703
43.1
2.2
198803
40.8
-0.1