Harper, IA has a humid continental climate with cold winters and hot summers. The average temperature in the summer months is around 80掳F, while temperatures drop to an average of 25掳F in the winter. Precipitation is fairly evenly distributed throughout the year, though slightly higher during the spring and summer months. Snowfall typically occurs between November and March, with February typically being the snowiest month in Harper, IA.
Harper, Iowa gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Harper averages 26 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Harper. The US average is 205 sunny days.
Harper gets some kind of precipitation, on average, 100 days per year. Precipitation is rain, snow, sleet, or hail that falls to the ground. In order for precipitation to be counted you have to get at least .01 inches on the ground to measure.
Weather Highlights
Summer High: the July high is around 85 degrees
Winter Low: the January low is 11
Rain: averages 37 inches of rain a year
Snow: averages 26 inches of snow a year