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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Saturday

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into the Tennessee Valley Saturday. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys Saturday. Extreme heat will continue for the Intermountain West and Plains. Read More >

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Mostly Cloudy

81°F

27°C

Humidity 58%
Wind Speed Calm
Barometer 29.99 in (1014.4 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Heat Index83°F (28°C)
Last update 11 Jul 3:53 pm EDT
Extended Forecast for

4 Miles NNE Williamsburg PA

  • This Afternoon

    This Afternoon: Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. North wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Scattered
    T-storms

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Scattered
    T-storms and
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.

    High: 85 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 63. Light southeast wind.

    Low: 63 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.

    High: 84 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 93.

    High: 93 °F

    Hot

  • Tuesday Night

    Tuesday Night: Clear, with a low around 70.

    Low: 70 °F

    Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 95.

    High: 95 °F

    Hot

Detailed Forecast

This Afternoon
Scattered showers and thunderstorms. Mostly cloudy, with a high near 83. North wind around 5 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Scattered showers and thunderstorms, mainly before 11pm. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 63. Light northeast wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Patchy fog before 9am. Otherwise, mostly sunny, with a high near 85. Calm wind becoming east around 5 mph in the afternoon.
Sunday Night
Mostly clear, with a low around 63. Light southeast wind.
Monday
Sunny, with a high near 84. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 64.
Tuesday
Sunny and hot, with a high near 93.
Tuesday Night
Clear, with a low around 70.
Wednesday
Sunny and hot, with a high near 95.
Wednesday Night
Mostly clear, with a low around 68.
Thursday
Sunny and hot, with a high near 92.
Thursday Night
Mostly clear, with a low around 67.
Friday
Mostly sunny, with a high near 90.
Friday Night
Partly cloudy, with a low around 66.
Saturday
A chance of showers. Mostly sunny, with a high near 88.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles NNE Williamsburg PA
 40.51°N 78.17°W (Elev. 804 ft)
Last Update:
3:54 pm EDT Jul 11, 2026
Forecast Valid:
4pm EDT Jul 11, 2026-6pm EDT Jul 18, 2026
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation