Tomorrow in Charleston looks
sunny, with a high of 50°
and an overnight low of 34°.
Rain is unlikely (10% chance).
Winds top out near 3 mph,
and the UV index reaches 2 (low).
Average conditions span from January lows near 28°F (-2°C) to July highs around 85°F (30°C). That 32°C (57°F) spread makes the time of year especially important.
Seasonal change
July highs reach 85°F (30°C), while January lows fall to 28°F (-2°C).
Typical day and night
Charleston averages 66°F (19°C) by day and 48°F (9°C) at night across the year.
Rain and sunshine
About 1320 mm (52.0 inches) falls across 150 wet days, with 8.5 hours of sunshine on an average day.
Average overnight lows sit at or below 0°C in 2 months of the year, January through February.
Which month is warmest in Charleston?
July, averaging 85°F (30°C) by day and 68°F (20°C) overnight. The hottest single day in our 2015-2024 record for this location reached 96°F (36°C).
What is the best month to go to Charleston?
April to June and August to October is the sweet spot for Charleston - warm days, manageable rainfall and plenty of daylight line up. Expect 75°F (24°C) in the afternoon and around 12 days of rain in a typical month of it. For the same question asked the other way round, see where else is warm in April.
When is Charleston at its coldest?
January, with highs of 44°F (6°C) and lows near 28°F (-2°C). The coldest day in the 2015-2024 record fell to -13°F (-25°C).
Is Charleston hot in summer?
July averages 85°F (30°C). Hot afternoons happen but extremes are not the norm.
Does it snow in Charleston?
Yes - about 9 days a year carry measurable snowfall, concentrated December through April.
What is the rainiest month in Charleston?
July, at 5.3 inches (135 mm) over about 15 days. November is the driest month, at 2.9 inches (73 mm).