Weather By Day

September Weather In Charleston  
September Charleston Weather
Record High: 102°F
Normal High: 77°F
Normal Low: 55°F
Record Low: 34°F
Avg Monthly Rain: 3.45"
Rec 1 Day Rain: 4.15"

Charleston Weather In September

In the last 63 years the highest measured September temperature in Charleston was 102 degrees Fahrenheit, most recently encountered on September 3, 1953, while the average high temperature is 77. The lowest documented temperature in September for Charleston for the past 63 years was 34 most recently registered on September 24, 1983, while the normal low measured temperature is 55.

US National Weather Service historical Charleston September Weather data records that on September 29, 1967, the high temperature did not exceed 47 degrees Fahrenheit, the lowest high measured in Charleston in the past 63 years. The Weather Service additionally indicates that on September 6, 1985, the low for the day did not drop below 74 degrees, the highest low recorded in Charleston in the last 63 years.

National Weather Service records indicate that the high temperature in Charleston on September First averages 83 degrees and the high on the last day of the month averages 73 degrees. The average daily low temperature in Charleston on September First is 61 degrees Fahrenheit and the average low on the last day of September is 50 degrees.

Charleston usually receives an average of 3.45 inches of precipitation during the month. The most precipitation recorded on a single day in September, according to September Charleston Weather data, was 4.15 inches on September 17, 2004.