Thunderstorms and Heavy Rain in the Mid-South; Heat Continues in the Southeast and Southwest

Severe thunderstorms and heavy rain are expected across portions of the mid-Mississippi Valley into the Ohio Valley and portions of Arizona. Dangerous heat persists in the South and Southeast while building into the Southwest. Overnight lows will be so warm that, when combined with oppressive dew points, little-to-no relief from the scorching daytime highs will be available. Read More >

Current conditions at

Greenville Spartanburg International Airport (KGSP)

Lat: 34.91°NLon: 82.21°WElev: 955ft.

Fair

86°F

30°C

Humidity 55%
Wind Speed NA
Barometer 30.03 in (1015.6 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index89°F (32°C)
Last update 19 Aug 12:53 pm EDT
Extended Forecast for

Lyman SC

  • This Afternoon

    This Afternoon: Sunny, with a high near 93. Light and variable wind.

    High: 93 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 95. Heat index values as high as 102. Calm wind becoming north northwest around 6 mph in the afternoon.

    High: 95 °F

    Hot

  • Thursday Night

    Thursday Night: A 30 percent chance of showers and thunderstorms before 2am.  Partly cloudy, with a low around 71. Light and variable wind.  New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 5pm.  Partly sunny, with a high near 91. North northeast wind around 5 mph becoming south southeast in the afternoon.  Chance of precipitation is 60%.

    High: 91 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before midnight.  Mostly cloudy, with a low around 68. Chance of precipitation is 60%.

    Low: 68 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 90.

    High: 90 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 93. Light and variable wind.
Tonight
Mostly clear, with a low around 72. Calm wind.
Thursday
Sunny and hot, with a high near 95. Heat index values as high as 102. Calm wind becoming north northwest around 6 mph in the afternoon.
Thursday Night
A 30 percent chance of showers and thunderstorms before 2am. Partly cloudy, with a low around 71. Light and variable wind. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 91. North northeast wind around 5 mph becoming south southeast in the afternoon. Chance of precipitation is 60%.
Friday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Saturday
Mostly sunny, with a high near 90.
Saturday Night
Partly cloudy, with a low around 68.
Sunday
Sunny, with a high near 91.
Sunday Night
Mostly clear, with a low around 68.
Monday
Sunny, with a high near 90.
Monday Night
Mostly clear, with a low around 68.
Tuesday
Mostly sunny, with a high near 90.
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ABOUT THIS FORECAST

 
Point Forecast:
Lyman SC
 34.97°N 82.14°W (Elev. 850 ft)
6:53 am EDT Aug 19, 2026
1pm EDT Aug 19, 2026-6pm EDT Aug 25, 2026
 
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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