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.

Mostly Cloudy

76°F

24°C

Humidity 74%
Wind Speed Calm
Barometer 30.10 in (1018.2 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index77°F (25°C)
Last update 14 Aug 3:53 pm EDT
Extended Forecast for

Williamsburg PA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 62. Calm wind.

    Low: 62 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind.

    High: 85 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: A slight chance of showers before 2am, then a chance of showers after 3am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 65 °F

    Mostly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 84 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm. Low around 69. West wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 69 °F

    Showers

  • Monday

    Monday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.

    High: 83 °F

    Partly Sunny
    then Slight
    Chance
    T-storms

  • Monday Night

    Monday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 59.

    Low: 59 °F

    Mostly Clear

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 62. Calm wind.
Saturday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind.
Saturday Night
A slight chance of showers before 2am, then a chance of showers after 3am. Mostly cloudy, with a low around 65. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 84. Calm wind becoming southwest 5 to 7 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm. Low around 69. West wind around 6 mph. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Monday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 20%.
Monday Night
Mostly clear, with a low around 58.
Tuesday
Sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 59.
Wednesday
Sunny, with a high near 86.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Thursday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 78.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsburg PA
 40.47°N 78.2°W (Elev. 994 ft)
Last Update:
3:24 pm EDT Aug 14, 2026
Forecast Valid:
4pm EDT Aug 14, 2026-6pm EDT Aug 21, 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