Oak Lawn, IL has a humid continental climate with hot and humid summers and cold winters. The average high in July is 82 degrees Fahrenheit and the average low in January is 16 degrees Fahrenheit. Precipitation generally occurs throughout the year, with the heaviest amounts being seen in spring months and lightest amounts in the winter months. Snowfall can also vary greatly from year to year but is typically around 30 inches annually.
Oak Lawn, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Oak Lawn averages 32 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 189 sunny days per year in Oak Lawn. The US average is 205 sunny days.
Oak Lawn gets some kind of precipitation, on average, 124 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 20
Rain: averages 39 inches of rain a year
Snow: averages 32 inches of snow a year