Duncan, SC Weather Forecast
Spartanburg County, South Carolina
Live radar, warnings and storm tracking for Duncan, with free alerts the moment it counts.
The next few hours
Taller, warmer bars mean heavier rain. Dotted means no reading for that hour.
Hour by hour
Sunrise and sunset
Next five days, scored 0 to 100The first day or two use the HRRR and NBM cloud layers. Later days only have total cloud, so treat them as a rough guide.
Know when sunset at this place will be worth a photo
We score every sunrise and sunset here from the cloud, haze and smoke forecast, and let you know when one is likely to light up. Sunrise the evening before, sunset a few hours ahead.
Seven-day outlook
Free alerts for Duncan
Every NWS warning, pushed to your phone, inbox or webhook the moment it is issued.
Duncan, SC at a glance
Duncan is home to about 4,431 people in Spartanburg County, across 6.3 square miles. It ranks 71st by population of 100 places in South Carolina with a forecast here. The nearest neighbour with its own forecast is Lyman, 3 miles away.
- County
- Spartanburg County
- Population
- 4,431 2023 est.
- Land area
- 6.3 sq mi
- People per sq mi
- 707
- Forecast point
- 34.9292°N, 82.1476°W
How well can the network see Duncan?
The nearest Doppler radar is KGSP (Greenville/Spartanburg, SC), to the SW. Its lowest scan passes about 250 ft above Duncan. That is about as close as US radar coverage gets: low-level rotation and gust fronts over Duncan show up clearly. Duncan is closer to its radar than 99% of US cities.
The closest weather station is KGSP (Greenville-Spartanburg Intl). Representative on most days, though a thunderstorm can hit one and miss the other.
Forecasts near Duncan
- Lyman, SC3 mi
- Wellford, SC4 mi
- Greer, SC5 mi
- Inman, SC9 mi
- Spartanburg, SC13 mi
- Mauldin, SC14 mi
- Greenville, SC14 mi
- Woodruff, SC14 mi
Elsewhere in South Carolina
CharlestonColumbiaNorth CharlestonMount PleasantRock HillGreenvilleAll South Carolina forecasts →

