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

72°F

22°C

Humidity 95%
Wind Speed Calm
Barometer 30.13 in
Dewpoint 70°F (21°C)
Visibility 7.00 mi
Last update 24 Jul 11:55 pm EDT
Extended Forecast for

Alton VA

  • Overnight

    Overnight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.

    Low: 71 °F

    Patchy Fog

  • Friday

    Friday: Sunny and hot, with a high near 96. Heat index values as high as 102. Calm wind becoming west around 6 mph in the morning.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: Mostly clear, with a low around 74. Calm wind.

    Low: 74 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Saturday Night

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

    Low: 74 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 96 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 30%.

    Low: 76 °F

    Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 74.

    Low: 74 °F

    Mostly Clear

Detailed Forecast

Overnight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 71. Calm wind.
Friday
Sunny and hot, with a high near 96. Heat index values as high as 102. Calm wind becoming west around 6 mph in the morning.
Friday Night
Mostly clear, with a low around 74. Calm wind.
Saturday
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Heat index values as high as 106. Calm wind. Chance of precipitation is 20%.
Saturday Night
Partly cloudy, with a low around 74. Calm wind.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 96. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 76. Chance of precipitation is 30%.
Monday
Sunny and hot, with a high near 96.
Monday Night
Mostly clear, with a low around 74.
Tuesday
Sunny and hot, with a high near 96.
Tuesday Night
Mostly clear, with a low around 73.
Wednesday
Sunny and hot, with a high near 97.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 72. Chance of precipitation is 30%.
Thursday
A chance of showers and thunderstorms. Mostly sunny and hot, with a high near 91. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Alton VA
 36.57°N 79.01°W (Elev. 538 ft)
Last Update:
8:01 pm EDT Jul 24, 2025
Forecast Valid:
12am EDT Jul 25, 2025-6pm EDT Jul 31, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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National Digital Forecast Database Maximum Temperature Forecast

High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation