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

18.3°C

across all months

Warmest month

32.7°C

Jul average high

Coolest month

2.3°C

Jan average low

Annual rainfall

1417mm

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

38.9°C

28 August 2024

Coldest day

-16.8°C

17 January 2024

Wettest day

72.5mm

14 July 2019

Windiest day

7.1m/s

8 June 2020