Williston, SC has a humid subtropical climate with hot and humid summers, and cooler, mild winters. The average temperature in the summer is around 90掳F (32掳C), while in the winter temperatures can drop to an average of around 48掳F (9掳C). Precipitation levels are moderate throughout the year, with an average of around 43 inches (109 cm) per year. Humidity levels tend to be quite high throughout the year, particularly during July and August when it can reach over 80%.
Williston, South Carolina gets 46 inches of rain, on average, per year. The US average is 38 inches of rain per year.
Williston averages 0 inches of snow per year. The US average is 28 inches of snow per year.
On average, there are 214 sunny days per year in Williston. The US average is 205 sunny days.
Williston 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 92 degrees
Winter Low: the January low is 33
Rain: averages 46 inches of rain a year
Snow: averages 0 inches of snow a year