Oak Forest, IL has a temperate climate with four distinct seasons. Summers are generally hot and humid with temperatures ranging from the mid-70s to the high-80s. Winters can be cold with temperatures typically between 30°F and 40°F, though occasional snowstorms can bring even colder weather. Spring and fall are mild and pleasant, which is great for outdoor activities like hikes through the nearby forest preserves or bike rides along the trails of Cook County. The area also receives an average of 38 inches of rain annually, making it a great place to enjoy all sorts of activities outdoors throughout the year.
Oak Forest, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Oak Forest averages 31 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 Oak Forest. The US average is 205 sunny days.
Oak Forest gets some kind of precipitation, on average, 123 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 84 degrees
Winter Low: the January low is 18
Rain: averages 39 inches of rain a year
Snow: averages 31 inches of snow a year