Simpsonville, SC Weather & Growing Conditions
Today
74°F
Mostly Cloudy then Slight Chance T-storms
A slight chance of rain between noon and 1pm, then a slight chance of thunderstorms and a slight chance of rain between 1pm and 3pm, then a chance of rain and a slight chance of thunderstorms between 3pm and 4pm, then a chance of thunderstorms and a chance of rain. Mostly cloudy, with a high near 74. Southeast wind around 7 mph. Chance of precipitation is 40%. New rainfall amounts less than a tenth of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 74°F | Mostly Cloudy then Slight Chance T-storms | 7 mph SE | 43% |
| Tonight | 62°F | Chance T-storms then Light Rain | 6 mph SSE | 83% |
| Thursday | 75°F | Chance Light Rain | 3 to 7 mph SSW | 39% |
| Thursday Night | 59°F | Chance Light Rain then Slight Chance T-storms | 3 mph SW | 35% |
| Friday | 75°F | Chance Light Rain | 3 mph W | 28% |
| Friday Night | 50°F | Mostly Clear | 5 mph NNW | 2% |
| Saturday | 70°F | Sunny | 2 to 6 mph N | 0% |
| Saturday Night | 43°F | Partly Cloudy | 2 to 7 mph NNE | 0% |
| Sunday | 66°F | Mostly Sunny | 1 to 5 mph NNW | 1% |
| Sunday Night | 41°F | Mostly Clear | 3 mph NW | 1% |
| Monday | 67°F | Sunny | 3 mph WNW | 1% |
| Monday Night | 40°F | Mostly Clear | 2 mph W | 1% |
| Tuesday | 68°F | Sunny | 0 to 6 mph WSW | 2% |
| Tuesday Night | 43°F | Mostly Clear | 3 mph WNW | 2% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Simpsonville, SC
Last spring frost
Mar 29
First fall frost
Nov 5
Growing season
222 days
Hardiness zone
8a
Explore more for Simpsonville, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Fountain Inn 2 Sw, Sc (3.9 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.