Vernon Hills, IL has a humid continental climate. The summers are typically hot and muggy with frequent thunderstorms, while the winters are cold and snowy. Average temperatures range from the low 30s in the winter to the mid-80s in the summer months. Precipitation is spread throughout the year, with higher amounts in spring and summer. Snowfall accumulates from November through March, but snow events can occur as early as October or as late as April.
Vernon Hills, Illinois gets 35 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Vernon Hills averages 38 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 Vernon Hills. The US average is 205 sunny days.
Vernon Hills gets some kind of precipitation, on average, 120 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 82 degrees
Winter Low: the January low is 15
Rain: averages 35 inches of rain a year
Snow: averages 38 inches of snow a year