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Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Mostly Cloudy

78°F

26°C

Humidity 79%
Wind Speed Vrbl 6 mph
Barometer 30.14 in (1019.3 mb)
Dewpoint 71°F (22°C)
Visibility 10.00 mi
Heat Index80°F (27°C)
Last update 2 Sep 10:53 am EDT
Extended Forecast for

Williamsburg PA

Severe T-storm Watch September 2, 11:10am until September 2, 02:00pm
Severe T-storm Warning until September 2, 11:15am
Click here for hazard details and duration
Severe T-storm Watch
...
  •  
    Severe T-storm Watch September 2, 11:10am until September 2, 02:00pm
    Severe T-storm Warning until September 2, 11:15am

    NOW: Multiple hazards in effect

    Click HERE for Details

  • Today

    High: 87 °F

    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 4am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: A chance of showers and thunderstorms before noon, then a chance of thunderstorms after 5pm. Mostly sunny, with a high near 89. Light southwest wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Chance
    Showers then
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 5am, then a slight chance of showers. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Chance
    T-storms then
    Chance
    Showers

  • Friday

    Friday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 84. Calm wind becoming northwest 5 to 8 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 61.

    Low: 61 °F

    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 79.

    High: 79 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

Detailed Forecast

Today
Showers and thunderstorms, mainly before 3pm. Some of the storms could be severe and produce heavy rainfall. High near 87. Light and variable wind. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 4am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Light south wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before noon, then a chance of thunderstorms after 5pm. Mostly sunny, with a high near 89. Light southwest wind becoming west 5 to 9 mph in the afternoon. Chance of precipitation is 30%. 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 5am, then a slight chance of showers. Mostly cloudy, with a low around 70. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 84. Calm wind becoming northwest 5 to 8 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Partly cloudy, with a low around 61.
Saturday
Mostly sunny, with a high near 79.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 76.
Sunday Night
Mostly clear, with a low around 54.
Labor Day
Mostly sunny, with a high near 78.
Monday Night
Mostly cloudy, with a low around 58.
Tuesday
Partly sunny, with a high near 79.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsburg PA
 40.45°N 78.21°W (Elev. 1086 ft)
Last Update:
11:02 am EDT Sep 2, 2026
Forecast Valid:
11am EDT Sep 2, 2026-6pm EDT Sep 8, 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