Dangerous Heat and Possible Flooding

Dangerous heat will persist across the Southwest U.S. through Saturday with daytime highs of 110-115°F. Extreme Heat Warnings remain in effect. Dangerous heat will build across the southern Plains again beginning this weekend. Heavy to excessive rain over the Carolinas Friday may lead to isolated areas of flash flooding. Read More >

Current conditions at

Greenville Spartanburg International Airport (KGSP)

Lat: 34.91°NLon: 82.21°WElev: 955ft.

Partly Cloudy

67°F

19°C

Humidity 97%
Wind Speed Calm
Barometer 30.13 in (1019.1 mb)
Dewpoint 66°F (19°C)
Visibility 7.00 mi
Last update 29 Aug 3:53 am EDT
Extended Forecast for

Duncan SCSimilar City Names

  • Today

    Today: A 20 percent chance of showers and thunderstorms after 1pm.  Patchy fog before 9am.  Otherwise, partly sunny, with a high near 84. Calm wind becoming northeast 5 to 7 mph in the morning.

    High: 84 °F

    Patchy Fog
    then Slight
    Chance
    T-storms

  • Tonight

    Tonight: A 20 percent chance of showers after 2am.  Patchy fog after 4am.  Otherwise, mostly cloudy, with a low around 68. Light northeast wind.

    Low: 68 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am.  Otherwise, partly sunny, with a high near 87. Light and variable wind.

    High: 87 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 68. Calm wind.

    Low: 68 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 92. Calm wind.

    High: 92 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 94.

    High: 94 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 72.

    Low: 72 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

Today
A 20 percent chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 84. Calm wind becoming northeast 5 to 7 mph in the morning.
Tonight
A 20 percent chance of showers after 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Light northeast wind.
Sunday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 87. Light and variable wind.
Sunday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 68. Calm wind.
Monday
Sunny, with a high near 92. Calm wind.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 94.
Tuesday Night
Mostly clear, with a low around 72.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny and hot, with a high near 95.
Thursday Night
Mostly clear, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms. Sunny and hot, with a high near 95.
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ABOUT THIS FORECAST

 
Point Forecast:
Duncan SCSimilar City Names
 34.93°N 82.14°W (Elev. 781 ft)
2:23 am EDT Aug 29, 2026
4am EDT Aug 29, 2026-6pm EDT Sep 4, 2026
 
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Additional Resources

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