Charleston South Carolina Climate Data

Monthly Average Climate Data for Charleston South Carolina

Switch Data to Celsius/Metric Units
MonthAvg. LowAvg. HighAvg. Precip
January40.4 °F58.8 °F3.16 in.
February42.5 °F61.4 °F3.23 in.
March49.0 °F67.2 °F3.39 in.
April56.5 °F73.8 °F3.25 in.
May65.5 °F80.6 °F3.29 in.
June72.3 °F85.9 °F5.84 in.
July75.5 °F89.1 °F7.22 in.
August74.7 °F87.8 °F6.95 in.
September70.2 °F83.9 °F5.46 in.
October60.3 °F76.6 °F4.54 in.
November49.5 °F68.1 °F2.74 in.
December43.5 °F61.5 °F3.53 in.
Annual58.3 °F74.6 °F52.6 in.

Climate Data for Charleston South Carolina

Average First Frost DateJan. 1 - Jan. 10
Average Last Frost DateFeb. 21 - Feb. 29
Average Days With Frost5-10 Days
Plant Hardiness Zone - 2023Zone 9a : 20°F to 25°F
Plant Hardiness Zone - 2012Zone 9a : 20°F to 25°F
Current Drought ConditionsNormal
Köppen Climate ClassificationCfa - Humid Subtropical Climate