Duncan, SC Weather & Growing Conditions
Today
83°F
Chance Showers And Thunderstorms
A slight chance of rain showers before 8am, then a chance of showers and thunderstorms between 8am and 1pm, then showers and thunderstorms between 1pm and 4pm, then showers and thunderstorms likely. Partly sunny, with a high near 83. Northeast wind 2 to 6 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch possible.
7-day forecast
| When | Temp | Forecast | Wind | Precip |
|---|---|---|---|---|
| Today | 83°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 79% |
| Tonight | 68°F | Chance Showers And Thunderstorms | 2 to 6 mph NE | 58% |
| Wednesday | 84°F | Showers And Thunderstorms | 5 mph SE | 81% |
| Wednesday Night | 68°F | Showers And Thunderstorms Likely | 0 to 5 mph S | 74% |
| Thursday | 86°F | Chance Rain Showers then Chance Showers And Thunderstorms | 0 to 7 mph SW | 57% |
| Thursday Night | 69°F | Chance Showers And Thunderstorms | 0 to 6 mph SW | 52% |
| Friday | 87°F | Partly Sunny then Chance Showers And Thunderstorms | 0 to 6 mph SSW | 41% |
| Friday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph SSW | 41% |
| Saturday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph WSW | 30% |
| Saturday Night | 69°F | Chance Showers And Thunderstorms | 0 to 5 mph W | 30% |
| Sunday | 88°F | Mostly Sunny then Chance Showers And Thunderstorms | 0 to 5 mph WSW | 30% |
| Sunday Night | 70°F | Chance Showers And Thunderstorms | 1 to 5 mph WSW | 30% |
| Monday | 89°F | Mostly Sunny then Slight Chance Showers And Thunderstorms | 1 to 5 mph SW | 23% |
| Monday Night | 71°F | Slight Chance Showers And Thunderstorms then Partly Cloudy | 5 mph WSW | 23% |
Forecast source: National Weather Service (api.weather.gov). Updated through the day.
Growing snapshot for Duncan, SC
Last spring frost
Mar 28
First fall frost
Nov 7
Growing season
224 days
Hardiness zone
8a
Explore more for Duncan, SC: full frost dates · planting calendar · South Carolina frost dates
Climate data from the nearest NOAA station, Greer, Sc (5.6 mi). Frost dates are 1991–2020 averages, not a forecast. Page updated Aug 4, 2026.