Decatur County, IA has a humid continental climate with cold winters and warm summers. Average monthly temperatures range from 24°F in January to 73°F in July. Precipitation is moderate throughout the year, with an average annual total of 37 inches. Snowfall occurs during the winter months, averaging 28 inches annually. The area is known for its mild springs and falls season, but summer months can get quite hot and humid with occasional thunderstorms. Overall, Decatur County offers pleasant weather year-round for outdoor activities and other recreational pursuits.
Decatur County, Iowa gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Decatur County averages 25 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 202 sunny days per year in Decatur County. The US average is 205 sunny days.
Decatur County 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 86 degrees
Winter Low: the January low is 13
Rain: averages 38 inches of rain a year
Snow: averages 25 inches of snow a year