The most pleasant months of the year for the 52588 zip code are September, May and June. In the 52588 zip code, there are 3 comfortable months with high temperatures in the range of 70-85°. July is the hottest month for the 52588 zip code with an average high temperature of 86.9°, which ranks it as one of the hottest places in Iowa. February is the snowiest month in the 52588 zip code with 6.0 inches of snow, and 6 months of the year have significant snowfall. July is the most humid month, though humidity is low for most of the year.