The Jacksonville, IL Metro Area has a humid continental climate, with hot summers and cold winters. Average summer temperatures reach into the low 80s, while winter temperatures typically range from the mid-20s to the low 30s. The area receives an average of 40 inches of precipitation annually, most of which falls from April through September. Snowfall averages around 28 inches per year, with a majority of it occurring in December and January. The area also experiences extreme weather patterns from time to time, including heavy thunderstorms and occasional tornadoes during spring and summer months.
Jacksonville Metro Area, Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Jacksonville Metro Area averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 198 sunny days per year in Jacksonville Metro Area. The US average is 205 sunny days.
Jacksonville Metro Area gets some kind of precipitation, on average, 105 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 18
Rain: averages 40 inches of rain a year
Snow: averages 18 inches of snow a year