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

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Partly Cloudy

22°C

72°F

Humidity 79%
Wind Speed S 9 km/h
Barometer 1020.4 mb (30.17 in)
Dewpoint 18°C (65°F)
Visibility 16 km
Last update 15 Aug 11:53 pm EDT
Extended Forecast for

4 Miles WNW Williamsburg PA

Flood Watch August 16, 06:00am until August 16, 10:00pm
Click here for hazard details and duration
Flood Watch

  • Overnight

    Overnight: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 20. Calm wind. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.

    Low: 20 °C

    Chance
    Showers

  • Sunday

    Sunday: Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 27. Calm wind becoming south 5 to 8 km/h in the afternoon. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.

    High: 27 °C

    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then a slight chance of showers after 3am. Low around 21. Calm wind. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.

    Low: 21 °C

    Showers then
    Showers
    Likely

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. West wind 8 to 13 km/h. Chance of precipitation is 30%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.

    High: 29 °C

    Mostly Sunny
    then Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 8pm. Mostly clear, with a low around 15. Northwest wind 5 to 8 km/h becoming calm after midnight. Chance of precipitation is 30%.

    Low: 15 °C

    Chance
    Showers then
    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 28.

    High: 28 °C

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 14.

    Low: 14 °C

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 29.

    High: 29 °C

    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.

    Low: 17 °C

    Chance
    Showers

Detailed Forecast

Overnight
A chance of showers, mainly after 5am. Mostly cloudy, with a low around 20. Calm wind. Chance of precipitation is 30%. New precipitation amounts between 1 and 2.5 mm possible.
Sunday
Showers and thunderstorms before 2pm, then showers and possibly a thunderstorm, mainly after 2pm. High near 27. Calm wind becoming south 5 to 8 km/h in the afternoon. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.
Sunday Night
Showers and thunderstorms before 2am, then a slight chance of showers after 3am. Low around 21. Calm wind. Chance of precipitation is 90%. New rainfall amounts between 1 and 2 cm possible.
Monday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 29. West wind 8 to 13 km/h. Chance of precipitation is 30%. New rainfall amounts of less than 1 mm, except higher amounts possible in thunderstorms.
Monday Night
A chance of showers before 8pm. Mostly clear, with a low around 15. Northwest wind 5 to 8 km/h becoming calm after midnight. Chance of precipitation is 30%.
Tuesday
Sunny, with a high near 28.
Tuesday Night
Mostly clear, with a low around 14.
Wednesday
Sunny, with a high near 29.
Wednesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 17. Chance of precipitation is 40%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 26. Chance of precipitation is 30%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 14. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 26.
Friday Night
Mostly cloudy, with a low around 14.
Saturday
A chance of showers. Partly sunny, with a high near 26. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles WNW Williamsburg PA
 40.48°N 78.29°W (Elev. 988 m)
Last Update:
9:46 pm EDT Aug 15, 2026
Forecast Valid:
12am EDT Aug 16, 2026-6pm EDT Aug 22, 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