Severe Thunderstorms and Excessive Rainfall in the Central U.S.; Heat Building in the Western U.S.

A cold front pressing east across the central U.S. will be the focus for areas of strong to severe thunderstorms and excessive rainfall through this weekend. Strong to severe thunderstorms my bring damaging winds, hail, and a few tornadoes while excessive rainfall may lead to areas of flooding. Heat will build across the western U.S. with heat-related watches, warnings, and advisories issued. Read More >

Hazardous Weather Conditions

Current conditions at

Greenville Spartanburg International Airport (KGSP)

Lat: 34.91°NLon: 82.21°WElev: 955ft.

Fair

80°F

27°C

Humidity 69%
Wind Speed N 3 mph
Barometer 30.12 in (1018.6 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 13 Jul 9:53 am EDT
Extended Forecast for

Lyman SC

  • Today

    Today: Sunny, with a high near 94. Heat index values as high as 101. Light north wind.

    High: 94 °F

    Sunny

  • Tonight

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

    Low: 72 °F

    Mostly Clear

  • Monday

    Monday: A 20 percent chance of showers and thunderstorms after 3pm.  Increasing clouds and hot, with a high near 95. Heat index values as high as 103. Light north wind.

    High: 95 °F

    Sunny then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 2am, then a slight chance of showers.  Mostly cloudy, with a low around 73. Calm wind.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 73 °F

    Chance
    T-storms

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 4pm.  Partly sunny, with a high near 92. Calm wind becoming southeast around 5 mph in the afternoon.  Chance of precipitation is 60%.

    High: 92 °F

    Slight Chance
    T-storms then
    T-storms
    Likely

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 10pm, then a chance of showers and thunderstorms after 10pm.  Mostly cloudy, with a low around 72. Chance of precipitation is 60%.

    Low: 72 °F

    T-storms
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers and thunderstorms likely after 2pm.  Mostly cloudy, with a high near 89. Chance of precipitation is 60%.

    High: 89 °F

    Chance
    Showers then
    T-storms
    Likely

  • Wednesday Night

    Wednesday Night: Showers and thunderstorms likely, mainly before 7pm.  Mostly cloudy, with a low around 71. Chance of precipitation is 60%.

    Low: 71 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: Showers and thunderstorms likely, mainly after 5pm.  Partly sunny, with a high near 90. Chance of precipitation is 60%.

    High: 90 °F

    Mostly Sunny
    then T-storms
    Likely

Detailed Forecast

Today
Sunny, with a high near 94. Heat index values as high as 101. Light north wind.
Tonight
Mostly clear, with a low around 72. Calm wind.
Monday
A 20 percent chance of showers and thunderstorms after 3pm. Increasing clouds and hot, with a high near 95. Heat index values as high as 103. Light north wind.
Monday Night
A chance of showers and thunderstorms before 2am, then a slight chance of showers. Mostly cloudy, with a low around 73. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly after 4pm. Partly sunny, with a high near 92. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 60%.
Tuesday Night
Showers and thunderstorms likely before 8pm, then showers likely and possibly a thunderstorm between 8pm and 10pm, then a chance of showers and thunderstorms after 10pm. Mostly cloudy, with a low around 72. Chance of precipitation is 60%.
Wednesday
A chance of showers, then showers and thunderstorms likely after 2pm. Mostly cloudy, with a high near 89. Chance of precipitation is 60%.
Wednesday Night
Showers and thunderstorms likely, mainly before 7pm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Thursday
Showers and thunderstorms likely, mainly after 5pm. Partly sunny, with a high near 90. Chance of precipitation is 60%.
Thursday Night
A 30 percent chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 72.
Friday
A 30 percent chance of showers and thunderstorms. Partly sunny, with a high near 92.
Friday Night
A 30 percent chance of showers and thunderstorms. Mostly cloudy, with a low around 72.
Saturday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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ABOUT THIS FORECAST

 
Point Forecast:
Lyman SC
 34.95°N 82.11°W (Elev. 833 ft)
6:23 am EDT Jul 13, 2025
10am EDT Jul 13, 2025-6pm EDT Jul 19, 2025
 
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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