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

40°F

4°C

Humidity 97%
Wind Speed Calm
Barometer 30.19 in (1023.0 mb)
Dewpoint 39°F (4°C)
Visibility 9.00 mi
Last update 27 Apr 3:53 am EDT
Extended Forecast for

4 Miles WNW Williamsburg PA

  • Today

    Today: Patchy fog before 8am. Patchy frost before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.

    High: 71 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tonight

    Tonight: Partly cloudy, with a low around 47. Southeast wind around 7 mph, with gusts as high as 20 mph.

    Low: 47 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 63. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 63 °F

    Showers
    Likely

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southeast 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: 50 °F

    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely, then showers and possibly a thunderstorm after 2pm. High near 65. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.

    High: 65 °F

    Showers
    Likely then
    Showers

  • Wednesday Night

    Wednesday Night: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 45 °F

    Showers

  • Thursday

    Thursday: A chance of showers before 8am. Mostly sunny, with a high near 59. Chance of precipitation is 30%.

    High: 59 °F

    Chance
    Showers then
    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 36.

    Low: 36 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 57.

    High: 57 °F

    Sunny

Detailed Forecast

Today
Patchy fog before 8am. Patchy frost before 8am. Otherwise, sunny, with a high near 71. Calm wind becoming southeast around 6 mph in the afternoon.
Tonight
Partly cloudy, with a low around 47. Southeast wind around 7 mph, with gusts as high as 20 mph.
Tuesday
Showers likely, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 63. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 50. Southeast 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.
Wednesday
Showers likely, then showers and possibly a thunderstorm after 2pm. High near 65. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 45. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of showers before 8am. Mostly sunny, with a high near 59. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 36.
Friday
Sunny, with a high near 57.
Friday Night
Partly cloudy, with a low around 36.
Saturday
Mostly sunny, with a high near 57.
Saturday Night
Partly cloudy, with a low around 35.
Sunday
Mostly sunny, with a high near 60.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Williamsburg PA
 40.48°N 78.29°W (Elev. 988 ft)
Last Update:
3:21 am EDT Apr 27, 2026
Forecast Valid:
4am EDT Apr 27, 2026-6pm EDT May 3, 2026
 
Forecast Discussion
 
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Additional Resources

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