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

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

73°F

23°C

Humidity 84%
Wind Speed S 3 mph
Barometer 30.06 in (1016.0 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Last update 31 Jul 8:54 am EDT
Extended Forecast for

Portage PA

  • Today

    Today: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 79. Northeast wind 3 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 79 °F

    Showers
    Likely then
    T-storms

  • Tonight

    Tonight: Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 60. Northeast wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Showers then
    Chance
    Showers

  • Friday

    Friday: A slight chance of showers. Partly sunny, with a high near 74. North wind around 9 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 52. Northeast wind 3 to 6 mph.

    Low: 52 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 75. Northeast wind 3 to 6 mph.

    High: 75 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Monday

    Monday: Sunny, with a high near 79.

    High: 79 °F

    Sunny

Detailed Forecast

Today
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 11am. High near 79. Northeast wind 3 to 6 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tonight
Showers and possibly a thunderstorm before 11pm, then showers likely. Low around 60. Northeast wind around 8 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers. Partly sunny, with a high near 74. North wind around 9 mph. Chance of precipitation is 20%.
Friday Night
Mostly clear, with a low around 52. Northeast wind 3 to 6 mph.
Saturday
Sunny, with a high near 75. Northeast wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 54.
Sunday
Sunny, with a high near 78.
Sunday Night
Partly cloudy, with a low around 57.
Monday
Sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 80.
Tuesday Night
Mostly cloudy, with a low around 60.
Wednesday
A chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
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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:
7:18 am EDT Jul 31, 2025
Forecast Valid:
9am EDT Jul 31, 2025-6pm EDT Aug 6, 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