Harman US

Mount Pleasant, SC Weather & Growing Conditions

This Afternoon
90°F
Chance Showers And Thunderstorms
A chance of showers and thunderstorms. Mostly sunny, with a high near 90. Heat index values as high as 102. Southeast wind around 5 mph. Chance of precipitation is 50%. New rainfall amounts less than a tenth of an inch possible.

7-day forecast

WhenTempForecastWindPrecip
This Afternoon 90°F Chance Showers And Thunderstorms 5 mph SE 46%
Tonight 73°F Chance Showers And Thunderstorms 5 mph NE 32%
Sunday 86°F Chance Showers And Thunderstorms 2 to 6 mph NE 43%
Sunday Night 73°F Partly Cloudy 0 to 5 mph NE 14%
Monday 88°F Partly Sunny then Slight Chance Showers And Thunderstorms 1 to 7 mph E 18%
Monday Night 74°F Slight Chance Showers And Thunderstorms 1 to 6 mph E 31%
Tuesday 86°F Showers And Thunderstorms Likely 2 to 8 mph NE 69%
Tuesday Night 71°F Showers And Thunderstorms Likely then Chance Showers And Thunderstorms 5 to 8 mph NE 69%
Wednesday 84°F Chance Showers And Thunderstorms 9 to 14 mph NE 48%
Wednesday Night 68°F Chance Showers And Thunderstorms then Partly Cloudy 13 mph N 48%
Thursday 83°F Mostly Sunny then Slight Chance Showers And Thunderstorms 14 mph N 21%
Thursday Night 66°F Slight Chance Showers And Thunderstorms then Partly Cloudy 8 to 12 mph N 21%
Friday 82°F Sunny 12 mph N 10%
Friday Night 65°F Partly Cloudy 5 to 8 mph N 10%

Forecast source: National Weather Service (api.weather.gov). Updated through the day.

Growing snapshot for Mount Pleasant, SC

Last spring frost
Mar 13
First fall frost
Nov 30
Growing season
262 days
Hardiness zone
9a

Explore more for Mount Pleasant, SC: full frost dates · planting calendar · South Carolina frost dates

Climate data from the nearest NOAA station, Sullivans Is, Sc (4 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Sep 19, 2026.