Mendota, IL experiences a humid continental climate with hot summers and cold winters. Average high temperatures in the summer months reach around 85 degrees Fahrenheit with average lows dipping to 61 degrees. Winters are often cold and snowy, with January being the coldest month, where temperatures average highs of around 28°F and lows of 11°F. Rainfall occurs throughout the year, although it's heaviest in June and July when thunderstorms can be common. Snowfall typically occurs from late October through April each year.
Mendota, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Mendota averages 29 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 195 sunny days per year in Mendota. The US average is 205 sunny days.
Mendota gets some kind of precipitation, on average, 110 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 83 degrees
Winter Low: the January low is 12
Rain: averages 37 inches of rain a year
Snow: averages 29 inches of snow a year