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

60°F

16°C

Humidity 35%
Wind Speed E 3 mph
Barometer 29.97 in
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Last update 21 Feb 5:35 pm EST
Extended Forecast for

Alton VA

  • Tonight

    Tonight: Rain, mainly after 1am. Low around 39. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 39 °F

    Mostly Cloudy
    then Rain

  • Sunday

    Sunday: Rain likely before 5pm, then a slight chance of rain and snow. Cloudy, with a high near 44. North wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.

    High: 44 °F

    Rain Likely
    then
    Rain/Snow
    Likely

  • Sunday Night

    Sunday Night: A slight chance of snow between 7pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 28. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.

    Low: 28 °F

    Slight Chance
    Snow

  • Monday

    Monday: Mostly sunny, with a high near 43. Northwest wind 13 to 18 mph, with gusts as high as 29 mph.

    High: 43 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 24. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.

    Low: 24 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 45.

    High: 45 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 57.

    High: 57 °F

    Mostly Cloudy

  • Wednesday Night

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

    Low: 47 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Rain, mainly after 1am. Low around 39. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Sunday
Rain likely before 5pm, then a slight chance of rain and snow. Cloudy, with a high near 44. North wind 6 to 15 mph, with gusts as high as 23 mph. Chance of precipitation is 70%. Little or no snow accumulation expected.
Sunday Night
A slight chance of snow between 7pm and 1am. Cloudy, then gradually becoming partly cloudy, with a low around 28. Northwest wind around 14 mph, with gusts as high as 24 mph. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 43. Northwest wind 13 to 18 mph, with gusts as high as 29 mph.
Monday Night
Mostly clear, with a low around 24. Northwest wind 8 to 11 mph, with gusts as high as 22 mph.
Tuesday
Mostly sunny, with a high near 45.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Mostly cloudy, with a high near 57.
Wednesday Night
Mostly cloudy, with a low around 47.
Thursday
A chance of rain before 1pm, then a chance of showers after 1pm. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 42. Chance of precipitation is 60%.
Friday
A chance of rain. Mostly sunny, with a high near 56. Chance of precipitation is 30%.
Friday Night
Mostly clear, with a low around 33.
Saturday
Sunny, with a high near 61.
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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:
4:00 pm EST Feb 21, 2026
Forecast Valid:
5pm EST Feb 21, 2026-6pm EST Feb 28, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation