Spring Valley, IL has a humid continental climate with long, cold winters and hot, humid summers. The average high temperature in the summer is 81 degrees Fahrenheit and the average low temperature in the winter is 20 degrees Fahrenheit. Precipitation levels are moderate throughout the year with an average of 35 inches of rainfall annually. Spring Valley is known for its frequent snowfall during the winter months which can produce up to 45 inches of snow each year. Despite colder temperatures during the winter months, Spring Valley's locals enjoy mild days when temperatures climb into the 50s or 60s.
Spring Valley, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Spring Valley averages 21 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 191 sunny days per year in Spring Valley. The US average is 205 sunny days.
Spring Valley gets some kind of precipitation, on average, 109 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 85 degrees
Winter Low: the January low is 14
Rain: averages 37 inches of rain a year
Snow: averages 21 inches of snow a year