Cass County, IA has a humid continental climate, characterized by cold, snowy winters and mild, humid summers. Winters are often dry due to the lack of snowfall, but can be quite cold with temperatures occasionally dropping below 0°F. Summers are usually warm and humid with temperatures reaching into the high 80s or low 90s. The average annual precipitation rate is around 31 inches per year. Spring and fall are both rather short seasons in this part of Iowa, transitioning between the warmer summer months and colder winter months.
Cass County, Iowa gets 36 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Cass County averages 26 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 213 sunny days per year in Cass County. The US average is 205 sunny days.
Cass County gets some kind of precipitation, on average, 94 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 36 inches of rain a year
Snow: averages 26 inches of snow a year