Seymour, IL has a humid continental climate characterized by hot and humid summers, cold and dry winters, and moderate spring and fall seasons. The temperature in the summer can reach up to 90 degrees Fahrenheit while the winter temperatures often dip below freezing. The area experiences an average of 36 inches of rainfall annually with snowfall averaging 12 inches per year. Seymour's location in the midwest adds to its moderate weather conditions, as the region is surrounded by large bodies of water such as Lake Michigan and the Mississippi River which influence local temperatures.
Seymour, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Seymour averages 20 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 195 sunny days per year in Seymour. The US average is 205 sunny days.
Seymour gets some kind of precipitation, on average, 112 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 40 inches of rain a year
Snow: averages 20 inches of snow a year