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

Heavy Rain and Flooding Concerns in Hawaii; Severe Weather in the Plains

A storm system is expected to bring strong winds, widespread heavy rainfall, and flooding concerns to the Hawaiian Islands through the weekend. Strong to severe thunderstorms are forecast from the Southern Plains to the Mid-Missouri Valley Thursday afternoon and evening. Large hail and strong winds are the primary threats. Read More >

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Fair

38°F

3°C

Humidity 43%
Wind Speed SW 10 mph
Barometer 30.43 in (1031.5 mb)
Dewpoint 17°F (-8°C)
Visibility 10.00 mi
Wind Chill31°F (-1°C)
Last update 9 Apr 2:53 am EDT
Extended Forecast for

4 Miles WNW Williamsburg PA

  • Overnight

    Overnight: Mostly clear, with a low around 34. South wind around 6 mph.

    Low: 34 °F

    Mostly Clear

  • Thursday

    Thursday: Widespread frost between 7am and 9am. Otherwise, mostly sunny, with a high near 64. South wind 3 to 8 mph.

    High: 64 °F

    Frost then
    Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 40. South wind around 6 mph becoming calm in the evening.

    Low: 40 °F

    Partly Cloudy

  • Friday

    Friday: Mostly sunny, with a high near 77. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.

    High: 77 °F

    Mostly Sunny

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 45. West wind around 6 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 45 °F

    Chance
    Showers

  • Saturday

    Saturday: Sunny, with a high near 65.

    High: 65 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 41.

    Low: 41 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 57.

    Low: 57 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 34. South wind around 6 mph.
Thursday
Widespread frost between 7am and 9am. Otherwise, mostly sunny, with a high near 64. South wind 3 to 8 mph.
Thursday Night
Partly cloudy, with a low around 40. South wind around 6 mph becoming calm in the evening.
Friday
Mostly sunny, with a high near 77. Calm wind becoming southwest 5 to 9 mph in the afternoon. Winds could gust as high as 21 mph.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 45. West wind around 6 mph becoming northwest after midnight. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Sunny, with a high near 65.
Saturday Night
Mostly clear, with a low around 41.
Sunday
Mostly sunny, with a high near 73.
Sunday Night
Mostly cloudy, with a low around 57.
Monday
Mostly cloudy, with a high near 78.
Monday Night
Mostly cloudy, with a low around 62.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 84. 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 ft)
Last Update:
2:41 am EDT Apr 9, 2026
Forecast Valid:
3am EDT Apr 9, 2026-6pm EDT Apr 15, 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