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 96%
Wind Speed E 3 mph
Barometer 30.14 in (1019.6 mb)
Dewpoint 70°F (21°C)
Visibility 10.00 mi
Last update 6 Aug 12:53 am EDT
Extended Forecast for

Shirleysburg PA

  • Overnight

    Overnight: Patchy fog. Otherwise, partly cloudy, with a low around 70. Calm wind.

    Low: 70 °F

    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms. Patchy fog before 9am. High near 90. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 90 °F

    Slight Chance
    Showers and
    Patchy Fog
    then T-storms

  • Thursday Night

    Thursday Night: Showers and thunderstorms likely before 10pm, then a chance of showers between 10pm and 11pm. Patchy fog after 10pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 70. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 70 °F

    T-storms
    Likely and
    Patchy Fog
    then Patchy
    Fog

  • Friday

    Friday: A chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 89. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.

    High: 89 °F

    Patchy Fog
    then Chance
    T-storms

  • Friday Night

    Friday Night: Showers and thunderstorms before 11pm, then showers likely between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 68. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 68 °F

    Heavy Rain

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 89 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.

    Low: 69 °F

    Chance
    T-storms then
    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 89.

    High: 89 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 68.

    Low: 68 °F

    Partly Cloudy

Detailed Forecast

Overnight
Patchy fog. Otherwise, partly cloudy, with a low around 70. Calm wind.
Thursday
Showers and thunderstorms. Patchy fog before 9am. High near 90. Calm wind. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before 10pm, then a chance of showers between 10pm and 11pm. Patchy fog after 10pm. Otherwise, mostly cloudy, then gradually becoming mostly clear, with a low around 70. Calm wind. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms after 1pm. Patchy fog before 9am. Otherwise, partly sunny, with a high near 89. Calm wind. Chance of precipitation is 40%. New rainfall amounts between a quarter and half of an inch possible.
Friday Night
Showers and thunderstorms before 11pm, then showers likely between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 68. Calm wind. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 89. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 89.
Sunday Night
Partly cloudy, with a low around 68.
Monday
Mostly sunny, with a high near 91.
Monday Night
A chance of showers. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Partly sunny, with a high near 91. Chance of precipitation is 50%.
Tuesday Night
Showers and thunderstorms likely. Mostly cloudy, with a low around 67. Chance of precipitation is 60%.
Wednesday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Shirleysburg PA
 40.29°N 77.89°W (Elev. 600 ft)
Last Update:
1:06 am EDT Aug 6, 2026
Forecast Valid:
1am EDT Aug 6, 2026-6pm EDT Aug 12, 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