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

13°F

-11°C

Humidity 64%
Wind Speed W 13 mph
Barometer 29.74 in (1009.6 mb)
Dewpoint 3°F (-16°C)
Visibility 10.00 mi
Wind Chill-2°F (-19°C)
Last update 16 Jan 12:53 am EST
Extended Forecast for

Shirleysburg PA

  • Overnight

    Overnight: Mostly clear, with a low around 17. West wind 6 to 9 mph, with gusts as high as 26 mph.

    Low: 17 °F

    Mostly Clear

  • Friday

    Friday: Increasing clouds, with a high near 35. Southwest wind 3 to 5 mph.

    High: 35 °F

    Increasing
    Clouds

  • Friday Night

    Friday Night: A slight chance of snow showers after 1am. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 20%.

    Low: 26 °F

    Mostly Cloudy
    then Slight
    Chance Snow
    Showers

  • Saturday

    Saturday: A chance of snow showers before 1pm, then a slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Partly sunny, with a high near 44. Calm wind becoming southwest around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 44 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 23. Calm wind.

    Low: 23 °F

    Mostly Cloudy

  • Sunday

    Sunday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 18.

    Low: 18 °F

    Partly Cloudy

  • M.L.King Day

    M.L.King Day: Mostly sunny, with a high near 32.

    High: 32 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 17. West wind 6 to 9 mph, with gusts as high as 26 mph.
Friday
Increasing clouds, with a high near 35. Southwest wind 3 to 5 mph.
Friday Night
A slight chance of snow showers after 1am. Mostly cloudy, with a low around 26. Calm wind. Chance of precipitation is 20%.
Saturday
A chance of snow showers before 1pm, then a slight chance of rain and snow showers between 1pm and 4pm, then a slight chance of rain showers after 4pm. Partly sunny, with a high near 44. Calm wind becoming southwest around 5 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.
Saturday Night
Mostly cloudy, with a low around 23. Calm wind.
Sunday
Partly sunny, with a high near 31.
Sunday Night
Partly cloudy, with a low around 18.
M.L.King Day
Mostly sunny, with a high near 32.
Monday Night
Partly cloudy, with a low around 7.
Tuesday
Mostly sunny, with a high near 20.
Tuesday Night
Partly cloudy, with a low around 10.
Wednesday
Partly sunny, with a high near 35.
Wednesday Night
Mostly cloudy, with a low around 24.
Thursday
Partly sunny, with a high near 39.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Shirleysburg PA
 40.29°N 77.89°W (Elev. 600 ft)
Last Update:
1:16 am EST Jan 16, 2026
Forecast Valid:
1am EST Jan 16, 2026-6pm EST Jan 22, 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