Westville, IL has a humid continental climate characterized by hot, humid summers and cold winters. Winters can be long and often bring snowfall from late December to mid-March. Summers are warm and often bring showers in the afternoon. The town experiences an average of 36 inches of rain each year and a wide range of temperatures. July is the hottest month with an average temperature of 79°F while January is the coldest month with an average temperature of 22°F. Spring and fall both offer mild weather conditions with averages ranging between 55 and 70°F.
Westville, Illinois gets 41 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Westville averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Westville. The US average is 205 sunny days.
Westville gets some kind of precipitation, on average, 116 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 18
Rain: averages 41 inches of rain a year
Snow: averages 18 inches of snow a year