National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

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.

Fair

71°F

22°C

Humidity 94%
Wind Speed S 6 mph
Barometer 30.00 in (1014.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Last update 28 Aug 1:53 am EDT
Extended Forecast for

Lyman SC

  • Overnight

    Overnight: Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Patchy Fog

  • Friday

    Friday: A 50 percent chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 87. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers
    Likely then
    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 86. North northeast wind 3 to 6 mph.

    High: 86 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Slight Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 88.

    High: 88 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 69.

    Low: 69 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

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

    Low: 70 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 5am. Otherwise, mostly cloudy, with a low around 68. Calm wind.
Friday
A 50 percent chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, mostly cloudy, with a high near 87. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely before 1am, then a slight chance of showers between 1am and 2am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 68. Light and variable wind. Chance of precipitation is 60%. New precipitation amounts between a quarter and half of an inch possible.
Saturday
A 30 percent chance of showers and thunderstorms, mainly after 2pm. Mostly cloudy, with a high near 86. North northeast wind 3 to 6 mph.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 1am. Mostly cloudy, with a low around 69. Calm wind. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 88.
Sunday Night
Partly cloudy, with a low around 69.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
Sunny, with a high near 94.
Wednesday Night
Mostly clear, with a low around 72.
Thursday
Sunny, with a high near 94.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Lyman SC
 34.95°N 82.11°W (Elev. 833 ft)
Last Update:
10:09 pm EDT Aug 27, 2026
Forecast Valid:
2am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database

National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation