Irwin, SC has a humid subtropical climate with hot summers and mild winters. The average high in the summer is usually around 86 degrees, and the average low in the winter is typically in the mid to low 40s. Precipitation throughout the year averages around 49 inches, which brings plenty of rain for plants and vegetation to flourish. The area also experiences occasional thunderstorms, with an average of 13 days per year seeing severe weather conditions. Overall, Irwin has a pleasant climate that allows for outdoor activities during most months of the year.
Irwin, South Carolina gets 44 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Irwin averages 2 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 217 sunny days per year in Irwin. The US average is 205 sunny days.
Irwin gets some kind of precipitation, on average, 93 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 44 inches of rain a year
Snow: averages 2 inches of snow a year