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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
19.7°C
across all months
Warmest month
31.3°C
Jul average high
Coolest month
6°C
Jan average low
Annual rainfall
1307mm
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
36.7°C
27 May 2019
Coldest day
-12.8°C
5 January 2018
Wettest day
245.9mm
5 September 2019
Windiest day
15.6m/s
5 September 2019
See the detail: Charleston on 5 September 2019.