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Areas of Severe Thunderstorms and Heat

Scattered severe thunderstorms and excessive rainfall are possible today in the Mid Atlantic, posing a risk for damaging winds and isolated flash flooding. Extreme Heat Warnings are in effect today for northeast Texas into southern Oklahoma and Arkansas. Extreme Heat Warnings are also in effect for the Desert Southwest today into Sunday. Read More >

Current conditions at

Greenwood, Greenwood County Airport (KGRD)

Lat: 34.25°NLon: 82.15°WElev: 630ft.

Fair

93°F

34°C

Humidity 37%
Wind Speed Vrbl 3 mph
Barometer 30.03 in (1016.0 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Heat Index94°F (34°C)
Last update 20 Aug 1:56 pm EDT
Extended Forecast for

Callison SC

  • This Afternoon

    This Afternoon: Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind.

    High: 99 °F

    Hot

  • Tonight

    Tonight: Partly cloudy, with a low around 74. Calm wind.

    Low: 74 °F

    Partly Cloudy

  • Friday

    Friday: Showers and thunderstorms likely, mainly after 5pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 108. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Mostly Sunny
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 71 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 93. Light west wind.

    High: 93 °F

    Mostly Sunny

  • Saturday Night

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

    Low: 70 °F

    Mostly Clear

  • Sunday

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

    High: 95 °F

    Hot

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 93.

    High: 93 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny and hot, with a high near 99. Heat index values as high as 105. Calm wind.
Tonight
Partly cloudy, with a low around 74. Calm wind.
Friday
Showers and thunderstorms likely, mainly after 5pm. Increasing clouds and hot, with a high near 96. Heat index values as high as 108. Calm wind becoming west southwest around 5 mph in the afternoon. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely, mainly before midnight. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 93. Light west wind.
Saturday Night
Mostly clear, with a low around 70.
Sunday
Sunny and hot, with a high near 95.
Sunday Night
Mostly clear, with a low around 69.
Monday
Sunny, with a high near 93.
Monday Night
Mostly clear, with a low around 70.
Tuesday
Mostly sunny, with a high near 93.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
A 30 percent chance of showers and thunderstorms. Mostly sunny, with a high near 93.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Callison SC
 34.02°N 82.11°W (Elev. 469 ft)
Last Update:
9:14 am EDT Aug 20, 2026
Forecast Valid:
1pm EDT Aug 20, 2026-6pm EDT Aug 26, 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