Charleston climate

Typical historical weather for Charleston, United States, averaged across 10 years of hourly climate data. Pick a date for a specific day.

Want today's actual conditions instead? See the current forecast for Charleston.

Annual average

14.1°C

across all months

Warmest month

29.4°C

Jul average high

Coolest month

-1.9°C

Jan average low

Annual rainfall

1389mm

total per year

Monthly averages

Average daily high/low temperature (band) and monthly rainfall (bars).

● Avg high● Avg low▮ Rainfall

Records on file

Hottest day

35.9°C

16 July 2024

Coldest day

-21.9°C

21 January 2025

Wettest day

118.4mm

23 June 2016

Windiest day

7.6m/s

9 January 2024