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

William M Tuck Airport (KW78)

Lat: 36.71°NLon: 78.85°WElev: 420ft.

Mostly Cloudy

76°F

24°C

Humidity 87%
Wind Speed Calm
Barometer 29.88 in
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index76°F (24°C)
Last update 18 Aug 1:55 am EDT
Extended Forecast for

South Boston VA

  • Overnight

    Overnight: Mostly cloudy, with a low around 72. Calm wind.

    Low: 72 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Sunny and hot, with a high near 91. North wind 3 to 5 mph.

    High: 91 °F

    Hot

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Sunny and hot, with a high near 91. Light northwest wind.

    High: 91 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 70. Calm wind.

    Low: 70 °F

    Mostly Clear

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Increasing clouds and hot, with a high near 95. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 95 °F

    Sunny then
    Chance
    T-storms

  • Thursday Night

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

    Low: 68 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.

    High: 87 °F

    Chance
    Showers then
    Showers
    Likely

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Showers

Detailed Forecast

Overnight
Mostly cloudy, with a low around 72. Calm wind.
Tuesday
Sunny and hot, with a high near 91. North wind 3 to 5 mph.
Tuesday Night
Partly cloudy, with a low around 70. Calm wind.
Wednesday
Sunny and hot, with a high near 91. Light northwest wind.
Wednesday Night
Mostly clear, with a low around 70. Calm wind.
Thursday
A chance of showers and thunderstorms after 2pm. Increasing clouds and hot, with a high near 95. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Friday
A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 87. Chance of precipitation is 70%.
Friday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 66. Chance of precipitation is 80%.
Saturday
A chance of showers. Mostly cloudy, with a high near 85. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 87.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
South Boston VA
 36.7°N 78.94°W (Elev. 400 ft)
Last Update:
1:30 am EDT Aug 18, 2026
Forecast Valid:
2am EDT Aug 18, 2026-6pm EDT Aug 24, 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