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.

Fog

37°F

3°C

Humidity 100%
Wind Speed NE 6 mph
Barometer 30.16 in (1022.7 mb)
Dewpoint 37°F (3°C)
Visibility 0.25 mi
Wind Chill32°F (0°C)
Last update 4 Mar 3:53 am EST
Extended Forecast for

Williamsburg PA

  • Overnight

    Overnight: A slight chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 36. Calm wind. Chance of precipitation is 20%.

    Low: 36 °F

    Slight Chance
    Rain and
    Areas Dense
    Fog

  • Wednesday

    Wednesday: A chance of rain, mainly after 8am. Patchy dense fog before 10am. Otherwise, cloudy, with a high near 49. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 49 °F

    Chance Rain
    and Patchy
    Dense Fog

  • Wednesday Night

    Wednesday Night: Rain, mainly after midnight. Patchy fog before 4am, then patchy fog after 5am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 44 °F

    Chance Rain
    then Rain and
    Patchy Fog

  • Thursday

    Thursday: Rain. Areas of fog between 7am and 11am. High near 59. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    High: 59 °F

    Rain and
    Areas Fog

  • Thursday Night

    Thursday Night: Rain. Low around 50. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 50 °F

    Rain

  • Friday

    Friday: A chance of rain. Mostly cloudy, with a high near 63. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 63 °F

    Chance Rain

  • Friday Night

    Friday Night: A chance of rain before 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.

    Low: 52 °F

    Chance Rain

  • Saturday

    Saturday: A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Chance Rain
    then Rain

  • Saturday Night

    Saturday Night: A chance of rain before 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.

    Low: 46 °F

    Chance Rain

Detailed Forecast

Overnight
A slight chance of rain. Areas of dense fog. Otherwise, cloudy, with a low around 36. Calm wind. Chance of precipitation is 20%.
Wednesday
A chance of rain, mainly after 8am. Patchy dense fog before 10am. Otherwise, cloudy, with a high near 49. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday Night
Rain, mainly after midnight. Patchy fog before 4am, then patchy fog after 5am. Low around 44. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
Rain. Areas of fog between 7am and 11am. High near 59. Light and variable wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Thursday Night
Rain. Low around 50. Calm wind. Chance of precipitation is 90%. New precipitation amounts between a quarter and half of an inch possible.
Friday
A chance of rain. Mostly cloudy, with a high near 63. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
A chance of rain before 1am. Mostly cloudy, with a low around 52. Chance of precipitation is 30%.
Saturday
A chance of rain, then rain and possibly a thunderstorm after 1pm. High near 74. Chance of precipitation is 80%.
Saturday Night
A chance of rain before 1am. Mostly cloudy, with a low around 46. Chance of precipitation is 50%.
Sunday
Mostly sunny, with a high near 62.
Sunday Night
Partly cloudy, with a low around 45.
Monday
Sunny, with a high near 70.
Monday Night
Mostly clear, with a low around 50.
Tuesday
A chance of rain. Mostly sunny, with a high near 75. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Williamsburg PA
 40.48°N 78.23°W (Elev. 942 ft)
Last Update:
1:34 am EST Mar 4, 2026
Forecast Valid:
4am EST Mar 4, 2026-6pm EDT Mar 10, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation