Duncan, SC is located in the Upstate region of South Carolina and has a mild climate with warm, humid summers and cool winters. Average temperatures tend to range from the mid-50s in winter up to the mid-80s in summer. Rainfall is abundant throughout the year, with thunderstorms common in the late spring and early fall months. The area experiences a mix of sun and clouds most days, allowing for plenty of outdoor activities year-round.
Duncan (zip 29334), South Carolina gets 48 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Duncan (zip 29334) averages 2 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 221 sunny days per year in Duncan (zip 29334). The US average is 205 sunny days.
Duncan (zip 29334) gets some kind of precipitation, on average, 109 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 91 degrees
Winter Low: the January low is 29
Rain: averages 48 inches of rain a year
Snow: averages 2 inches of snow a year