Plainfield, IL has a humid continental climate with hot and humid summers and cold winters. The average high temperature in the summer is around 81°F (27°C) and the average low temperature in the winter is around 16°F (-9°C). Precipitation in Plainfield is spread fairly evenly throughout the year with around 40 inches of rain annually. During the winter months, snowfall can be common, with an annual average of 30 inches.
Plainfield, Illinois gets 39 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Plainfield averages 29 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 188 sunny days per year in Plainfield. The US average is 205 sunny days.
Plainfield gets some kind of precipitation, on average, 124 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 16
Rain: averages 39 inches of rain a year
Snow: averages 29 inches of snow a year