Quincy, IL has a humid continental climate characterized by four distinct seasons. Summers are hot and humid with temperatures reaching the high 80s during the day and overnight lows in the mid-60s. Winters are cold with temperatures often dipping below freezing and snowfall being common throughout the season. Spring and autumn temperatures tend to be mild, with occasional rain showers that help bring the region lush vegetation. Overall, Quincy has moderate weather that makes it a great destination for outdoor activities year-round.
Quincy, Illinois gets 37 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Quincy averages 18 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 199 sunny days per year in Quincy. The US average is 205 sunny days.
Quincy 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 86 degrees
Winter Low: the January low is 18
Rain: averages 37 inches of rain a year
Snow: averages 18 inches of snow a year