Long Grove, IL has a moderate climate that is generally comfortable year-round. Summers in Long Grove are warm and humid but not overly hot, with temperatures averaging around 75 degrees Fahrenheit and sometimes reaching up to 90 degrees during the hottest parts of the day. Winters are cold and snowy, with an average low temperature of 22 degrees Fahrenheit and occasional snowfall totaling up to 10 inches. In spring and fall the weather in Long Grove is usually mild, with temperatures ranging between 45 and 70 degrees. Overall, Long Grove has a pleasant climate that allows residents to enjoy outdoor activities throughout the year.
Long Grove, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Long Grove averages 38 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 187 sunny days per year in Long Grove. The US average is 205 sunny days.
Long Grove 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 83 degrees
Winter Low: the January low is 12
Rain: averages 37 inches of rain a year
Snow: averages 38 inches of snow a year