Grand Mound, IA is located in a continental climate zone, meaning the weather is prone to be variable. Summers are hot and humid, with average temperatures reaching into the upper 80s and low 90s. Winters are cold and wet, with temperatures often dipping below freezing and snowfall common. Spring and fall bring mild temperatures with sunshine and lower humidity. Precipitation is most common throughout the year due to its location in the Midwest but tends to peak during late spring and early summer. The town receives an average of 42 inches of rain per year along with an average of 41 inches of snowfall annually.
Grand Mound, Iowa gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Grand Mound averages 31 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Grand Mound. The US average is 205 sunny days.
Grand Mound gets some kind of precipitation, on average, 108 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 11
Rain: averages 37 inches of rain a year
Snow: averages 31 inches of snow a year