South Roxana, IL has a humid continental climate with hot summers and cold winters. The average temperature in the summer is around 80°F (26.7°C) and the average winter temperature is around 20°F (-6.7°C). Rainfall is moderate throughout the year, with an average of 36 inches annually. Snowfall is also common in South Roxana during the winter months with an annual average of about 23 inches of snow per year. Overall, South Roxana typically experiences four distinct seasons throughout the year with mild temperatures in spring and autumn, and more extreme temperatures in summer and winter.
South Roxana, Illinois gets 42 inches of rain, on average, per year. The US average is 38 inches of rain per year.
South Roxana averages 15 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 South Roxana. The US average is 205 sunny days.
South Roxana gets some kind of precipitation, on average, 103 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 23
Rain: averages 42 inches of rain a year
Snow: averages 15 inches of snow a year