National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce
Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

67°F

19°C

Humidity 73%
Wind Speed S 6 mph
Barometer 30.30 in (1024.9 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 10 Aug 8:54 am EDT
Extended Forecast for

Portage PA

  • Today

    Today: Sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.

    High: 83 °F

    Sunny

  • Tonight

    Tonight: Clear, with a low around 59. Southeast wind around 5 mph becoming calm in the evening.

    Low: 59 °F

    Clear

  • Monday

    Monday: Sunny, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.

    High: 85 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 64. Light south wind.

    Low: 64 °F

    Mostly Clear

  • Tuesday

    Tuesday: A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.

    High: 88 °F

    Sunny then
    Slight Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.

    Low: 68 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.

    High: 85 °F

    Chance
    Showers then
    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Sunny, with a high near 83. Calm wind becoming south around 6 mph in the afternoon.
Tonight
Clear, with a low around 59. Southeast wind around 5 mph becoming calm in the evening.
Monday
Sunny, with a high near 85. Calm wind becoming south around 5 mph in the afternoon.
Monday Night
Mostly clear, with a low around 64. Light south wind.
Tuesday
A slight chance of showers between 2pm and 5pm, then a slight chance of showers and thunderstorms after 5pm. Sunny, with a high near 88. Calm wind becoming south around 5 mph in the afternoon. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 68. Chance of precipitation is 20%.
Wednesday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 63. Chance of precipitation is 30%.
Friday
A chance of showers. Mostly sunny, with a high near 85. Chance of precipitation is 30%.
Friday Night
A chance of showers. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Saturday
A chance of showers. Mostly sunny, with a high near 86. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.39°N 78.68°W (Elev. 1621 ft)
Last Update:
7:36 am EDT Aug 10, 2025
Forecast Valid:
9am EDT Aug 10, 2025-6pm EDT Aug 16, 2025
 
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