National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Fair

65°F

18°C

Humidity 84%
Wind Speed Calm
Barometer 30.08 in (1018.3 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 25 Aug 7:53 pm EDT
Extended Forecast for

Williamsburg PA

  • Tonight

    Tonight: Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Clear
    then Patchy
    Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Decreasing
    Clouds

  • Thursday

    Thursday: A chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Patchy Fog
    then Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    T-storms

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.

    High: 82 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 59.

    Low: 59 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 82.

    High: 82 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog before 4am, then patchy fog after 5am. Otherwise, partly cloudy, with a low around 56. Calm wind.
Wednesday
Patchy fog before 8am. Otherwise, partly sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Wednesday Night
Mostly cloudy, then gradually becoming mostly clear, with a low around 61. Calm wind.
Thursday
A chance of showers and thunderstorms after 2pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 85. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 63. Calm wind. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 82.
Saturday Night
Mostly clear, with a low around 60.
Sunday
Mostly sunny, with a high near 85.
Sunday Night
Partly cloudy, with a low around 65.
Monday
Mostly sunny, with a high near 87.
Monday Night
Mostly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 86.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Williamsburg PA
 40.47°N 78.2°W (Elev. 994 ft)
Last Update:
8:11 pm EDT Aug 25, 2026
Forecast Valid:
8pm EDT Aug 25, 2026-6pm EDT Sep 1, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation