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

Heavy Snow and Disruptive Ice in the Upper Midwest; Severe Thunderstorms in the Southern Plains

A late season winter storm will produce a combination of heavy snow and disruptive ice starting this evening in the Northern Plains and moving into the Upper Midwest and Great Lakes by tonight continuing through Thursday. Severe thunderstorms will likely produce severe wind gusts, large hail, a few tornadoes, and heavy rainfall across the southern and central Plains today. Read More >

Hazardous Weather Conditions

Current conditions at

Altoona - Blair County Airport (KAOO)

Lat: 40.3°NLon: 78.32°WElev: 1467ft.

Mostly Cloudy

65°F

18°C

Humidity 73%
Wind Speed W 8 mph
Barometer 30.12 in (1019.4 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 1 Apr 12:53 pm EDT
Extended Forecast for

4 Miles WNW Williamsburg PA

  • This Afternoon

    This Afternoon: Rain and possibly a thunderstorm before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 70. Northwest wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 70 °F

    Showers

  • Tonight

    Tonight: Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers after 2am. Low around 52. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 52 °F

    Showers

  • Thursday

    Thursday: A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers

  • Friday

    Friday: A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 58 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.

    High: 82 °F

    Chance
    Showers then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.

    Low: 52 °F

    Chance
    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.

    High: 65 °F

    Showers
    Likely

Detailed Forecast

This Afternoon
Rain and possibly a thunderstorm before 4pm, then showers likely and possibly a thunderstorm between 4pm and 5pm, then a chance of showers and thunderstorms after 5pm. High near 70. Northwest wind around 6 mph. Chance of precipitation is 90%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms before 1am, then showers likely and possibly a thunderstorm between 1am and 2am, then a chance of showers after 2am. Low around 52. Northeast wind around 6 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A chance of showers, with thunderstorms also possible after 5pm. Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 55. Southeast wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers before 8am, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 80. South wind 5 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 82. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms, then showers likely after 8pm. Mostly cloudy, with a low around 52. Chance of precipitation is 60%.
Sunday
Showers likely, mainly before 2pm. Mostly cloudy, with a high near 65. Chance of precipitation is 70%.
Sunday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 35. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 55.
Monday Night
Partly cloudy, with a low around 35.
Tuesday
A chance of rain and snow showers. Partly sunny, with a high near 55. Chance of precipitation is 40%.
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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:
1:23 pm EDT Apr 1, 2026
Forecast Valid:
1pm EDT Apr 1, 2026-6pm EDT Apr 7, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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