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

66°F

19°C

Humidity 93%
Wind Speed Calm
Barometer 29.97 in (1013.9 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 18 Aug 6:53 am EDT
Extended Forecast for

Marklesburg PA

  • Today

    Today: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming northwest around 6 mph in the afternoon.

    High: 83 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 61. Light west wind.

    Low: 61 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers, mainly after 2am. Mostly cloudy, with a low around 66. Light west wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 66 °F

    Slight Chance
    Showers then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 11pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Friday

    Friday: Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 80.

    High: 80 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    Showers

  • Saturday

    Saturday: Showers likely after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.

    High: 80 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 83. Calm wind becoming northwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 61. Light west wind.
Wednesday
Mostly sunny, with a high near 84. Calm wind becoming west 5 to 7 mph in the afternoon.
Wednesday Night
A chance of showers, mainly after 2am. Mostly cloudy, with a low around 66. Light west wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 80. Calm wind. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a slight chance of showers and thunderstorms between 8pm and 11pm, then a slight chance of showers after 11pm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Patchy fog between 7am and 8am. Otherwise, partly sunny, with a high near 80.
Friday Night
A chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Saturday
Showers likely after 2pm. Partly sunny, with a high near 80. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 63. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 60. Chance of precipitation is 30%.
Monday
Sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Marklesburg PA
 40.38°N 78.16°W (Elev. 915 ft)
Last Update:
6:11 am EDT Aug 18, 2026
Forecast Valid:
7am EDT Aug 18, 2026-6pm EDT Aug 24, 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