Sumter, SC Climate in August

Temperature for August

In Sumter, SC during August the average high temperature is 88.8°F. The hottest day on record was August 10, 2007 when the temperature hit 104.2°F.

Sumter, SC daily average and extreme temperature range for August

Low Temperature

During August the overnight temperature drops to an average of 71.1°F, with the lowest temperature of 53.1°F being recorded on August 30, 1986. In August it has never frozen overnight.

Precipitation for August

In August the average monthly rainfall in Sumter, SC is 2.59 inches with rain usually falling on between 12 and 13 days. 1943 was the driest August with only 0.00 inches of rain falling, and 1985 was the wettest August with 11.85 inches of rain. The wettest single day in August was 18 August 1985 when 4.92 inches of rain fell.

There are thunderstorms on between 8 and 9 days in August.