Smithfield, IL has a humid continental climate that experiences four distinct seasons. Summers are warm and humid with temperatures averaging in the mid-80s Fahrenheit (27-30 °C) while winters are cold with temperatures usually dipping below freezing. Spring and fall typically bring mild weather with average temperatures in the 50s Fahrenheit (10-15 °C). Smithfield usually sees about 38 inches of rain annually and moderate snowfall in the winter months.
Smithfield (zip 61477), Illinois gets 40 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Smithfield (zip 61477) averages 23 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 193 sunny days per year in Smithfield (zip 61477). The US average is 205 sunny days.
Smithfield (zip 61477) gets some kind of precipitation, on average, 92 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 87 degrees
Winter Low: the January low is 15
Rain: averages 40 inches of rain a year
Snow: averages 23 inches of snow a year