Waterloo, Iowa September-March Average Temperature
Degrees Fahrenheit
195103
33.1
195203
35.0
195303
37.3
195403
39.7
195503
36.9
195603
33.9
195703
37.4
195803
35.8
195903
35.3
196003
34.4
196103
37.6
196203
33.9
196303
34.6
196403
38.0
196503
32.9
196603
37.3
196703
36.5
196803
36.3
196903
34.3
197003
32.2
197103
34.0
197203
36.1
197303
36.2
197403
36.7
197503
35.0
197603
38.3
197703
32.6
197803
31.5
197903
31.7
198003
36.0
198103
37.4
198203
32.8
198303
39.4
198403
34.1
198503
36.1
198603
33.6
198703
38.7
198803
36.0
198903
36.0
199003
37.5
199103
36.9
199203
37.6
199303
34.5
199403
33.0
199503
38.5
199603
33.5
199703
34.6
199803
39.0
199903
40.1
200003
40.5
200103
33.3
200203
41.0
200303
37.0
200403
37.8
200503
39.2
200603
38.7
200703
36.9
200803
34.8
200903
35.4
201003
35.1
201103
35.5
201203
42.0
201303
36.4
201403
31.3
201503
34.9
201603
41.6
201703
41.4
201803
36.4
201903
34.0