Decatur, IN is located in an area called the Corn Belt, meaning that it has a humid continental climate. The summers are sunny and warm, while the winters are cold with occasional snowfall. The average temperature during the winter months ranges from 10-30°F, while during the summer months temperatures can range from 60-90°F. Spring and autumn are mild with temperatures ranging between 40-70°F. Precipitation is moderate throughout the year, usually totaling to around 35 inches per year. Overall, Decatur’s climate is mild enough to make outdoor activities enjoyable all year round!
Decatur, Indiana gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Decatur averages 27 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 180 sunny days per year in Decatur. The US average is 205 sunny days.
Decatur gets some kind of precipitation, on average, 119 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 84 degrees
Winter Low: the January low is 17
Rain: averages 38 inches of rain a year
Snow: averages 27 inches of snow a year