Duncan, SC Weather Forecast
Local 7-day forecast
Clear
Track current conditions, temperature changes, wind, and the full daily outlook for Duncan, SC in one place.
Clear, with a low around 58. West wind around 3 mph.
Local Weather Overview
This forecast page for Duncan, SC is designed for quick trip planning, giving you a clean read on daytime highs, overnight lows, and changing conditions across the upcoming forecast window. Latest sync: Oct 13, 2026 9:09 PM EDT.
The active forecast window currently covers Oct 13 to Oct 20, 2026 for Duncan, SC.
Page Snapshot
- Page focus
- city weather
- Forecast window
- Oct 13 to Oct 20, 2026
- Latest sync
- Oct 13, 2026 9:09 PM EDT
- Forecast office
- GSP
- Source
- NOAA / NWS
Daily Outlook
This Week in Duncan
Wednesday looks like the warmest upcoming period in Duncan at 86 degrees F.
Saturday Night is the coolest period ahead with temperatures near 40 degrees F.
The strongest winds are forecast for Friday Night at about 12 to 20 mph NNW.
The forecast from Oct 13 through Oct 20 stays mostly dry.
Forecast Details
- Last updated
- Oct 13, 2026 9:09 PM EDT
- Coverage
- 8 days
- Time zone
- America/New_York
- Forecast office
- GSP
- Radar station
- KGSP
Weather data is provided by the National Weather Service and refreshed automatically for U.S. locations.
Open NOAA sourceExtended Forecast
Sunny, with a high near 86. Northwest wind 0 to 3 mph.
Clear, with a low around 59. West southwest wind around 2 mph.
Sunny, with a high near 86. Southwest wind 0 to 5 mph.
Clear, with a low around 61. Southwest wind around 5 mph.
Sunny, with a high near 84.
Mostly clear, with a low around 46.
Sunny, with a high near 64.
Clear, with a low around 40.
Sunny, with a high near 62.
Clear, with a low around 43.
Sunny, with a high near 67.
Mostly clear, with a low around 48.
Mostly sunny, with a high near 71.
Detailed Forecast
| Period | Conditions | Temp | Wind |
|---|---|---|---|
|
Tonight
Oct 13
|
Clear
|
58°F |
3 mph
W
|
|
Wednesday
Oct 14
|
Sunny
|
86°F |
0 to 3 mph
NW
|
|
Wednesday Night
Oct 14
|
Clear
|
59°F |
2 mph
WSW
|
|
Thursday
Oct 15
|
Sunny
|
86°F |
0 to 5 mph
SW
|
|
Thursday Night
Oct 15
|
Clear
|
61°F |
5 mph
SW
|
|
Friday
Oct 16
|
Sunny
|
84°F |
6 to 16 mph
WSW
|
|
Friday Night
Oct 16
|
Mostly Clear
|
46°F |
12 to 20 mph
NNW
|
|
Saturday
Oct 17
|
Sunny
|
64°F |
9 to 13 mph
NNE
|
|
Saturday Night
Oct 17
|
Clear
|
40°F |
8 mph
NE
|
|
Sunday
Oct 18
|
Sunny
|
62°F |
9 mph
NE
|
|
Sunday Night
Oct 18
|
Clear
|
43°F |
7 mph
NE
|
|
Monday
Oct 19
|
Sunny
|
67°F |
7 mph
NE
|
|
Monday Night
Oct 19
|
Mostly Clear
|
48°F |
5 mph
NE
|
|
Tuesday
Oct 20
|
Mostly Sunny
|
71°F |
6 mph
NE
|
Nearby Forecasts
Explore weather pages for nearby cities and major places around Duncan.