About Marshalltown, IA

Marshalltown, in Iowa, United States, is home to roughly 27,600 people in the Central Time Zone at 42°N latitude.

Across a typical year Marshalltown sees about 33 inches of precipitation, with June the wettest month and February the driest. Temperatures range from January lows near 10°F up to July highs around 83°F, averaging 48°F annually — characteristic of a humid continental climate.