Rochester, IL has a humid continental climate, characterized by hot summers and cold winters. In the summer months, temperatures average around 75°F, while in the winter months they can drop to an average of 25°F. Precipitation is evenly distributed throughout the year with an average of about 37 inches annually. There are four distinct seasons in Rochester, IL with spring and fall being the most pleasant times of year.
Rochester (zip 62563), Illinois gets 38 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Rochester (zip 62563) 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 Rochester (zip 62563). The US average is 205 sunny days.
Rochester (zip 62563) gets some kind of precipitation, on average, 102 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 18
Rain: averages 38 inches of rain a year
Snow: averages 18 inches of snow a year