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
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| 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.