Mason City, IA has a humid continental climate with cold, windy winters and hot, humid summers. Winters in Mason City bring moderate snowfall and temperatures that range from 20°F to 40°F. In the spring and fall months, temperatures can be mild or cool depending on the weather system passing through. Summers are hot and humid with temperatures ranging from 65°F to 85°F during the day and staying warm at night. On average, precipitation is seen throughout all four seasons in Mason City.
Mason City, Iowa gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mason City averages 39 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Mason City. The US average is 205 sunny days.
Mason City gets some kind of precipitation, on average, 102 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 82 degrees
Winter Low: the January low is 6
Rain: averages 35 inches of rain a year
Snow: averages 39 inches of snow a year