Marion, IL County is a great place to visit year round for its mild climate. The summers are generally warm and humid with temperatures typically ranging from the mid-70s to upper 80s. Winter temperatures rarely dip below freezing, making it an ideal destination in the winter months. Spring and fall offer moderate temperatures that range from the mid-40s to low 70s. Precipitation is fairly consistent throughout the year, though most of it occurs in spring and early summer months. Marion County sees an average of about 45 inches of snow each year, but most of it melts quickly under the warm sun.
Marion County, Illinois gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Marion County averages 11 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 200 sunny days per year in Marion County. The US average is 205 sunny days.
Marion County gets some kind of precipitation, on average, 102 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 88 degrees
Winter Low: the January low is 21
Rain: averages 44 inches of rain a year
Snow: averages 11 inches of snow a year