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.

Overcast

77°F

25°C

Humidity 71%
Wind Speed Calm
Barometer 30.16 in (1020.4 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 15 Aug 7:53 pm EDT
Extended Forecast for

4 Miles N Williamsburg PA

  • Tonight

    Tonight: Patchy fog after 1am. Otherwise, partly cloudy, with a low around 67. Calm wind.

    Low: 67 °F

    Partly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly between 4pm and 5pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    T-storms and
    Patchy Fog

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 67. Calm wind.

    Low: 67 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 88 °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 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.

    High: 77 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.

    Low: 61 °F

    Showers
    Likely

Detailed Forecast

Tonight
Patchy fog after 1am. Otherwise, partly cloudy, with a low around 67. Calm wind.
Saturday
A chance of showers and thunderstorms, mainly between 4pm and 5pm. Patchy fog before 10am. Otherwise, mostly sunny, with a high near 89. Calm wind. Chance of precipitation is 30%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Mostly clear, with a low around 67. Calm wind.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 40%. 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 65. Northwest wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%.
Wednesday
A chance of showers. Partly sunny, with a high near 75. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 78.
Thursday Night
Mostly clear, with a low around 57.
Friday
Sunny, with a high near 83.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles N Williamsburg PA
 40.52°N 78.2°W (Elev. 997 ft)
Last Update:
6:08 pm EDT Aug 15, 2025
Forecast Valid:
8pm EDT Aug 15, 2025-6pm EDT Aug 22, 2025
 
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