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

54°F

12°C

Humidity 77%
Wind Speed SE 3 mph
Barometer 30.26 in (1025.1 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 3 Oct 8:54 pm EDT
Extended Forecast for

Portage PA

  • Tonight

    Tonight: Increasing clouds, with a low around 50. Southeast wind 3 to 5 mph.

    Low: 50 °F

    Increasing
    Clouds

  • Sunday

    Sunday: A chance of light rain, mainly before 9am. Cloudy, with a high near 62. Southeast wind 6 to 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 62 °F

    Chance Light
    Rain

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 48. Light and variable wind.

    Low: 48 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 61. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.

    High: 61 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming calm after midnight.

    Low: 37 °F

    Mostly Clear

  • Tuesday

    Tuesday: Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Patchy Frost
    and Patchy
    Fog then
    Sunny

  • Tuesday Night

    Tuesday Night: Clear, with a low around 40.

    Low: 40 °F

    Clear

  • Wednesday

    Wednesday: Sunny, with a high near 68.

    High: 68 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 48.

    Low: 48 °F

    Mostly Clear

Detailed Forecast

Tonight
Increasing clouds, with a low around 50. Southeast wind 3 to 5 mph.
Sunday
A chance of light rain, mainly before 9am. Cloudy, with a high near 62. Southeast wind 6 to 8 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Mostly cloudy, with a low around 48. Light and variable wind.
Monday
Mostly sunny, with a high near 61. Northwest wind 7 to 13 mph, with gusts as high as 24 mph.
Monday Night
Mostly clear, with a low around 37. Northwest wind 5 to 7 mph becoming calm after midnight.
Tuesday
Patchy fog between 7am and 8am. Patchy frost between 7am and 8am. Otherwise, sunny, with a high near 59.
Tuesday Night
Clear, with a low around 40.
Wednesday
Sunny, with a high near 68.
Wednesday Night
Mostly clear, with a low around 48.
Thursday
Mostly sunny, with a high near 67.
Thursday Night
Mostly clear, with a low around 45.
Friday
Sunny, with a high near 67.
Friday Night
Mostly clear, with a low around 46.
Saturday
Sunny, with a high near 67.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.39°N 78.68°W (Elev. 1621 ft)
Last Update:
8:06 pm EDT Oct 3, 2026
Forecast Valid:
9pm EDT Oct 3, 2026-6pm EDT Oct 10, 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