Rowan, IA has a humid continental climate with generally cold winters and hot summers. The average annual temperature for Rowan is around 49 degrees Fahrenheit, with the hottest month being July and the coldest month being January. Rainfall in Rowan averages about 37 inches per year, with the wettest month in May and the driest month usually being October. Snowfall also varies year to year, but averages around 21 inches annually.
Rowan, Iowa gets 34 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rowan averages 29 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 196 sunny days per year in Rowan. The US average is 205 sunny days.
Rowan gets some kind of precipitation, on average, 86 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 84 degrees
Winter Low: the January low is 7
Rain: averages 34 inches of rain a year
Snow: averages 29 inches of snow a year