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

56°F

13°C

Humidity 92%
Wind Speed Calm
Barometer 29.97 in
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 18 Apr 1:55 am EDT
Extended Forecast for

Alton VA

  • Overnight

    Overnight: Mostly clear, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 88. Calm wind becoming southwest 5 to 9 mph in the afternoon.

    High: 88 °F

    Sunny

  • Saturday Night

    Saturday Night: Increasing clouds, with a low around 59. South wind 5 to 7 mph.

    Low: 59 °F

    Increasing
    Clouds

  • Sunday

    Sunday: Showers likely, mainly between 1pm and 2pm. Mostly cloudy, with a high near 66. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Showers
    Likely

  • Sunday Night

    Sunday Night: Mostly cloudy, then gradually becoming clear, with a low around 41. Northwest wind 3 to 6 mph.

    Low: 41 °F

    Decreasing
    Clouds

  • Monday

    Monday: Sunny, with a high near 66.

    High: 66 °F

    Sunny

  • Monday Night

    Monday Night: Clear, with a low around 35.

    Low: 35 °F

    Clear

  • Tuesday

    Tuesday: Sunny, with a high near 69.

    High: 69 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly clear, with a low around 57. Calm wind.
Saturday
Sunny, with a high near 88. Calm wind becoming southwest 5 to 9 mph in the afternoon.
Saturday Night
Increasing clouds, with a low around 59. South wind 5 to 7 mph.
Sunday
Showers likely, mainly between 1pm and 2pm. Mostly cloudy, with a high near 66. Northwest wind 10 to 14 mph, with gusts as high as 24 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly cloudy, then gradually becoming clear, with a low around 41. Northwest wind 3 to 6 mph.
Monday
Sunny, with a high near 66.
Monday Night
Clear, with a low around 35.
Tuesday
Sunny, with a high near 69.
Tuesday Night
Mostly clear, with a low around 48.
Wednesday
Mostly sunny, with a high near 84.
Wednesday Night
Partly cloudy, with a low around 53.
Thursday
Sunny, with a high near 84.
Thursday Night
Mostly clear, with a low around 54.
Friday
Sunny, with a high near 86.
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:
1:30 am EDT Apr 18, 2026
Forecast Valid:
2am EDT Apr 18, 2026-6pm EDT Apr 24, 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