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.

Fair

78°F

26°C

Humidity 22%
Wind Speed SE 3 mph
Barometer 29.84 in
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Heat Index78°F (26°C)
Last update 21 Mar 6:35 pm EDT
Extended Forecast for

Alton VA

  • Tonight

    Tonight: Mostly clear, with a low around 53. Light south wind.

    Low: 53 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the morning.

    High: 86 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. Southwest wind around 6 mph.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Mostly cloudy, then gradually becoming sunny, with a high near 75. West wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.

    High: 75 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Partly cloudy, with a low around 38. North wind 5 to 8 mph.

    Low: 38 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 58.

    High: 58 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Increasing clouds, with a low around 39.

    Low: 39 °F

    Increasing
    Clouds

  • Wednesday

    Wednesday: Partly sunny, with a high near 65.

    High: 65 °F

    Partly Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 47.

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 53. Light south wind.
Sunday
Sunny, with a high near 86. Light southwest wind increasing to 5 to 10 mph in the morning.
Sunday Night
Partly cloudy, with a low around 63. Southwest wind around 6 mph.
Monday
Mostly cloudy, then gradually becoming sunny, with a high near 75. West wind 5 to 11 mph becoming north in the afternoon. Winds could gust as high as 21 mph.
Monday Night
Partly cloudy, with a low around 38. North wind 5 to 8 mph.
Tuesday
Mostly sunny, with a high near 58.
Tuesday Night
Increasing clouds, with a low around 39.
Wednesday
Partly sunny, with a high near 65.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
Partly sunny, with a high near 73.
Thursday Night
Mostly cloudy, with a low around 56.
Friday
A chance of showers. Mostly cloudy, with a high near 75. Chance of precipitation is 30%.
Friday Night
A chance of showers. Mostly cloudy, with a low around 42. Chance of precipitation is 40%.
Saturday
A chance of showers. Partly sunny, with a high near 59. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Alton VA
 36.57°N 79.01°W (Elev. 538 ft)
Last Update:
4:00 pm EDT Mar 21, 2026
Forecast Valid:
6pm EDT Mar 21, 2026-6pm EDT Mar 28, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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