Forrest, IL has an overall moderate climate with warm and humid summers and cold winters. Located in the Midwest, Forrest typically experiences all four seasons with cold temperatures in the winter months and milder temperatures in the summer months. Snowfall averages around 16 inches per year, while rainfall averages near 40 inches per year. Because of its location close to a lake, Forrest also experiences some lake effect snow during Winter months. During the summer months cooling breezes from Lake Shelbyville make it slightly cooler than surrounding areas.
Forrest, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Forrest averages 19 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Forrest. The US average is 205 sunny days.
Forrest gets some kind of precipitation, on average, 106 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 85 degrees
Winter Low: the January low is 16
Rain: averages 37 inches of rain a year
Snow: averages 19 inches of snow a year