Sun Prairie, WI generally experiences a typical Midwestern climate with hot and humid summers, cold and snowy winters, and pleasant springs and falls. Average summer temperatures range from the mid-50s to the low 90s with high humidity levels. In the winter months the temperature has been known to drop as low as negative 20 degrees Fahrenheit, although this is fairly uncommon. The average snowfall for Sun Prairie is around 38 inches per year. Rainfall is generally consistent throughout the year with an average of around 33 inches per year.
Sun Prairie, Wisconsin gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Sun Prairie averages 43 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 187 sunny days per year in Sun Prairie. The US average is 205 sunny days.
Sun Prairie gets some kind of precipitation, on average, 113 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 81 degrees
Winter Low: the January low is 9
Rain: averages 35 inches of rain a year
Snow: averages 43 inches of snow a year