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.

Overcast

71°F

22°C

Humidity 53%
Wind Speed S 10 mph
Barometer 29.73 in (1005.6 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 18 Jun 12:53 am EDT
Extended Forecast for

Shirleysburg PA

  • Overnight

    Overnight: A chance of showers, with thunderstorms also possible after 5am. Cloudy, with a low around 65. South wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 65 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers and thunderstorms before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 88. South wind 8 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 88 °F

    Chance
    T-storms then
    Partly Sunny

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 60. West wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 26 mph.

    Low: 60 °F

    Partly Cloudy

  • Juneteenth

    Juneteenth: Sunny, with a high near 82. West wind 5 to 10 mph, with gusts as high as 22 mph.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 58. West wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.

    Low: 58 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 80.

    High: 80 °F

    Sunny

  • Saturday Night

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

    Low: 57 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 84.

    High: 84 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.

    Low: 59 °F

    Chance
    Showers then
    Showers
    Likely

Detailed Forecast

Overnight
A chance of showers, with thunderstorms also possible after 5am. Cloudy, with a low around 65. South wind 3 to 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers and thunderstorms before 11am. Cloudy, then gradually becoming mostly sunny, with a high near 88. South wind 8 to 14 mph, with gusts as high as 32 mph. Chance of precipitation is 50%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Partly cloudy, with a low around 60. West wind 5 to 8 mph becoming calm after midnight. Winds could gust as high as 26 mph.
Juneteenth
Sunny, with a high near 82. West wind 5 to 10 mph, with gusts as high as 22 mph.
Friday Night
Mostly clear, with a low around 58. West wind 5 to 7 mph becoming calm in the evening. Winds could gust as high as 20 mph.
Saturday
Sunny, with a high near 80.
Saturday Night
Mostly clear, with a low around 57.
Sunday
Mostly sunny, with a high near 84.
Sunday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 70%.
Monday
Showers, mainly before 2pm. High near 80. Chance of precipitation is 80%.
Monday Night
A chance of showers. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Tuesday
Mostly sunny, with a high near 83.
Tuesday Night
Mostly clear, with a low around 58.
Wednesday
Mostly sunny, with a high near 84.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirleysburg PA
 40.31°N 77.88°W (Elev. 600 ft)
Last Update:
9:26 pm EDT Jun 17, 2026
Forecast Valid:
12am EDT Jun 18, 2026-6pm EDT Jun 24, 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