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.

Partly Cloudy

71°F

22°C

Humidity 90%
Wind Speed SW 3 mph
Barometer 30.08 in (1017.5 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 1 Sep 3:53 am EDT
Extended Forecast for

Shirleysburg PA

  • Today

    Today: Mostly sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon.

    High: 91 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 1am, then a slight chance of showers after 5am. Some of the storms could be severe. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.

    Low: 72 °F

    Severe
    Thunderstorms

  • Wednesday

    Wednesday: A chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers and thunderstorms after 2am. Some of the storms could be severe. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 72 °F

    Severe
    Thunderstorms

  • Thursday

    Thursday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Mostly sunny and hot, with a high near 92. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 92 °F

    Mostly Sunny
    then Severe
    Thunderstorms

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.

    Low: 70 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Friday

    Friday: Partly sunny, with a high near 88.

    High: 88 °F

    Partly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 63.

    Low: 63 °F

    Mostly Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 83.

    High: 83 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 91. Calm wind becoming west around 6 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms before 1am, then a slight chance of showers after 5am. Some of the storms could be severe. Partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.
Wednesday
A chance of showers before 3pm, then a slight chance of showers and thunderstorms between 3pm and 4pm. Some of the storms could be severe. Mostly cloudy, then gradually becoming sunny, with a high near 90. Calm wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a slight chance of showers and thunderstorms after 2am. Some of the storms could be severe. Mostly cloudy, with a low around 72. Calm wind. Chance of precipitation is 60%. New rainfall amounts between a quarter and half of an inch possible.
Thursday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Some of the storms could be severe. Mostly sunny and hot, with a high near 92. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers between 11pm and 2am. Some of the storms could be severe. Mostly cloudy, with a low around 70. Chance of precipitation is 20%.
Friday
Partly sunny, with a high near 88.
Friday Night
Mostly cloudy, with a low around 63.
Saturday
Mostly sunny, with a high near 83.
Saturday Night
Partly cloudy, with a low around 58.
Sunday
Mostly sunny, with a high near 81.
Sunday Night
Partly cloudy, with a low around 59.
Labor Day
Mostly sunny, with a high near 82.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirleysburg PA
 40.29°N 77.89°W (Elev. 600 ft)
Last Update:
2:45 am EDT Sep 1, 2026
Forecast Valid:
4am EDT Sep 1, 2026-6pm EDT Sep 7, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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