Glenwood, IL enjoys a humid continental climate with warm summers and cold winters. This climate is typical of the midwestern United States, with temperatures ranging from hot in the summer to cold in the winter. Summer days can reach up to 90 degrees Fahrenheit during the day, while overnight lows can drop down into the 50s. Winters bring chilly temperatures with cold fronts coming from Canada and highs only reaching into the upper 30s and low 40s. Precipitation levels remain consistent throughout the year, with average annual snowfall totaling approximately 34 inches per year.
Glenwood, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Glenwood averages 31 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 Glenwood. The US average is 205 sunny days.
Glenwood gets some kind of precipitation, on average, 117 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 84 degrees
Winter Low: the January low is 18
Rain: averages 39 inches of rain a year
Snow: averages 31 inches of snow a year