Maryville, IL has a humid continental climate with warm summers and cold winters. Temperatures in the summer range from the mid-sixties to mid-eighties and can occasionally reach nineties during heat waves. Winters are typically cold with temperatures ranging from the low thirties to low fifties. Precipitation is fairly evenly distributed throughout the year, with some areas receiving more in winter months than summer months. Snowfall is common in winter months, though not as heavy as other parts of Illinois, and there are typically at least one or two days a year where temperatures drop below zero degrees Fahrenheit.
Maryville (zip 62062), Illinois gets 43 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Maryville (zip 62062) averages 12 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 Maryville (zip 62062). The US average is 205 sunny days.
Maryville (zip 62062) gets some kind of precipitation, on average, 99 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 89 degrees
Winter Low: the January low is 22
Rain: averages 43 inches of rain a year
Snow: averages 12 inches of snow a year