Green Valley, IL has a humid continental climate with four distinct seasons. Summers are hot and humid with temperatures that often reach the high 80s and low 90s. Winters in Green Valley consist of cold temperatures that can dip down into the teens and sometimes single digits during especially cold snaps. Spring and fall bring mild temperatures with moderate precipitation. Overall, Green Valley offers a range of temperatures throughout each season providing diverse activities for locals and visitors alike.
Green Valley, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Green Valley averages 21 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 190 sunny days per year in Green Valley. The US average is 205 sunny days.
Green Valley gets some kind of precipitation, on average, 110 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 87 degrees
Winter Low: the January low is 16
Rain: averages 37 inches of rain a year
Snow: averages 21 inches of snow a year