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

75°F

24°C

Humidity 69%
Wind Speed W 7 mph
Barometer 29.99 in (1014.8 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 19 Aug 5:53 pm EDT
Extended Forecast for

4 Miles W Williamsburg PA

  • Tonight

    Tonight: A chance of rain, mainly after 3am. Mostly cloudy, with a low around 64. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Periods of rain and thunderstorms before 2pm, then rain likely and possibly a thunderstorm between 2pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 74. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 74 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms before 8pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance Rain
    and Patchy
    Fog then
    Areas Fog

  • Friday

    Friday: A chance of showers after 2pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 79. Light and variable wind. Chance of precipitation is 30%.

    High: 79 °F

    Areas Fog
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm, then a chance of showers after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 80. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    Showers and
    Patchy Fog
    then Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 61. Chance of precipitation is 80%.

    Low: 61 °F

    Showers then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 2pm. Mostly sunny, with a high near 78. Chance of precipitation is 30%.

    High: 78 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Mostly clear, with a low around 57. Chance of precipitation is 30%.

    Low: 57 °F

    Chance
    Showers then
    Mostly Clear

Detailed Forecast

Tonight
A chance of rain, mainly after 3am. Mostly cloudy, with a low around 64. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Periods of rain and thunderstorms before 2pm, then rain likely and possibly a thunderstorm between 2pm and 5pm, then a chance of rain and thunderstorms after 5pm. High near 74. Light and variable wind. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of rain and thunderstorms before 8pm. Patchy fog after 9pm. Otherwise, mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers after 2pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 79. Light and variable wind. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm, then a chance of showers after 2am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 30%.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Patchy fog before 8am. High near 80. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Low around 61. Chance of precipitation is 80%.
Sunday
A chance of showers after 2pm. Mostly sunny, with a high near 78. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Mostly clear, with a low around 57. Chance of precipitation is 30%.
Monday
Sunny, with a high near 77.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 79.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Partly sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Williamsburg PA
 40.46°N 78.29°W (Elev. 1096 ft)
Last Update:
3:03 pm EDT Aug 19, 2026
Forecast Valid:
6pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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