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.

Fair

73°F

23°C

Humidity 90%
Wind Speed Calm
Barometer 30.10 in (1017.9 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 2 Sep 7:53 am EDT
Extended Forecast for

Waterfall PA

Heat Advisory September 3, 11:00am until September 3, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: A chance of showers and thunderstorms, mainly before 3pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Tonight

    Tonight: Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and noon. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 91 °F

    Slight Chance
    T-storms and
    Patchy Fog
    then Mostly
    Sunny

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 40%.

    Low: 71 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Friday

    Friday: A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind becoming northwest around 6 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: 86 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 57.

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, mainly before 3pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely, mainly before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and noon. Patchy fog before 7am. Otherwise, mostly sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms before 2am. Some of the storms could be severe. Mostly cloudy, with a low around 71. Calm wind. Chance of precipitation is 40%.
Friday
A slight chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 86. Calm wind becoming northwest around 6 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.
Friday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 56.
Labor Day
Mostly sunny, with a high near 80.
Monday Night
Partly cloudy, with a low around 59.
Tuesday
Partly sunny, with a high near 81.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Waterfall PA
 40.13°N 78.06°W (Elev. 942 ft)
Last Update:
8:06 am EDT Sep 2, 2026
Forecast Valid:
8am EDT Sep 2, 2026-6pm EDT Sep 8, 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