61426 Castleton, IL experiences a humid continental climate, with hot and humid summers and cold, snowy winters. Average temperatures range from a high of 84掳F in the summer months to a low of 26掳F in the winter. Precipitation averages around 40 inches per year, with snowfall totaling roughly 28 inches annually.
Castleton (zip 61426), Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Castleton (zip 61426) averages 23 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 192 sunny days per year in Castleton (zip 61426). The US average is 205 sunny days.
Castleton (zip 61426) gets some kind of precipitation, on average, 106 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 13
Rain: averages 37 inches of rain a year
Snow: averages 23 inches of snow a year