Denison, IA 51442 has a humid continental climate with relatively mild summer temperatures and cold winter temperatures. Precipitation is relatively average throughout the year with most of it falling between May and September. Snowfall occurs mainly in November through March, with an average of 39 inches of snow annually. Summer temperatures are typically in the mid 70's while winter temperatures can drop into the single digits.
Denison (zip 51442), Iowa gets 32 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Denison (zip 51442) averages 33 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 214 sunny days per year in Denison (zip 51442). The US average is 205 sunny days.
Denison (zip 51442) 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 10
Rain: averages 32 inches of rain a year
Snow: averages 33 inches of snow a year