Duncan, SC Weather & Growing Conditions
Local forecast, frost dates, hardiness zone and planting guidance for Duncan, a town in Spartanburg County, South Carolina.
This Afternoon
72°F
Mostly Sunny
Mostly sunny, with a high near 72. East wind around 6 mph.
7-day forecast for Duncan
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| This Afternoon | 72°F | Mostly Sunny | 6 mph E | 1% |
| Tonight | 56°F | Mostly Cloudy | 5 mph NE | 2% |
| Wednesday | 73°F | Chance Rain Showers | 6 mph ESE | 43% |
| Wednesday Night | 62°F | Showers And Thunderstorms | 5 mph SSE | 92% |
| Thursday | 76°F | Chance Showers And Thunderstorms | 2 to 7 mph SSW | 45% |
| Thursday Night | 58°F | Chance Rain Showers | 3 mph SW | 40% |
| Friday | 76°F | Slight Chance Showers And Thunderstorms then Partly Sunny | 5 mph WSW | 31% |
| Friday Night | 51°F | Mostly Clear | 6 mph NW | 5% |
| Saturday | 72°F | Sunny | 5 mph N | 2% |
| Saturday Night | 44°F | Partly Cloudy | 6 mph N | 1% |
| Sunday | 67°F | Mostly Sunny | 5 mph NW | 6% |
| Sunday Night | 42°F | Mostly Clear | 5 mph WNW | 11% |
| Monday | 66°F | Sunny | 5 to 8 mph WNW | 11% |
| Monday Night | 39°F | Clear | 6 mph W | 3% |
Forecast source: National Weather Service (api.weather.gov) for Duncan (34.929, -82.148). Updated through the day.
Growing snapshot for Duncan
Last spring frost
Mar 28
First fall frost
Nov 7
Growing season
224 days
Hardiness zone
8a
More local growing data for Duncan: nearby ZIP 29334 weather · frost dates · planting calendar · South Carolina frost dates
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Climate data from the nearest NOAA station, Greer, Sc (5.6 mi from Duncan). Frost dates are 1991–2020 averages, not a forecast. Page updated Nov 4, 2026.