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

71°F

22°C

Humidity 59%
Wind Speed Calm
Barometer 30.01 in
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 20 Jun 8:55 am EDT
Extended Forecast for

Alton VA

  • Today

    Today: Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.

    High: 87 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny and hot, with a high near 92. Calm wind becoming southwest around 5 mph.

    High: 92 °F

    Hot

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 70. Calm wind becoming south 5 to 8 mph after midnight.

    Low: 70 °F

    Partly Cloudy

  • Monday

    Monday: Showers and possibly a thunderstorm after 2pm. High near 95. South wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 95 °F

    Mostly Sunny
    then Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 68. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 68 °F

    Showers then
    Chance
    Showers

  • Tuesday

    Tuesday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 63.

    Low: 63 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 87.

    High: 87 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 87. Calm wind becoming west around 5 mph in the afternoon.
Tonight
Mostly clear, with a low around 62. Calm wind.
Sunday
Sunny and hot, with a high near 92. Calm wind becoming southwest around 5 mph.
Sunday Night
Partly cloudy, with a low around 70. Calm wind becoming south 5 to 8 mph after midnight.
Monday
Showers and possibly a thunderstorm after 2pm. High near 95. South wind 11 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 68. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Mostly sunny, with a high near 89.
Tuesday Night
Partly cloudy, with a low around 63.
Wednesday
Mostly sunny, with a high near 87.
Wednesday Night
A chance of showers after 2am. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 40%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 89.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Alton VA
 36.57°N 79.01°W (Elev. 538 ft)
Last Update:
8:00 am EDT Jun 20, 2026
Forecast Valid:
9am EDT Jun 20, 2026-6pm EDT Jun 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