Diagonal, IA experiences a humid continental climate with warm summers and cold winters. Average temperatures in the summer range from 65 to 85 degrees Fahrenheit, while winter temperatures average 20 to 40 degrees Fahrenheit. On average, Diagonal receives 36 inches of rain every year with about 8 inches of snow annually. During the summer months, thunderstorms are common and can bring heavy rainfall at times. The area also experiences occasional strong winds throughout the year.
Diagonal, Iowa gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Diagonal averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 206 sunny days per year in Diagonal. The US average is 205 sunny days.
Diagonal 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 85 degrees
Winter Low: the January low is 12
Rain: averages 37 inches of rain a year
Snow: averages 20 inches of snow a year