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

38°F

3°C

Humidity 46%
Wind Speed W 6 mph
Barometer 30.27 in (1027.7 mb)
Dewpoint 19°F (-7°C)
Visibility 10.00 mi
Wind Chill33°F (1°C)
Last update 24 Mar 7:54 pm EDT
Extended Forecast for

Portage PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 33. Light and variable wind.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 54. South wind 3 to 8 mph.

    High: 54 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. South wind around 7 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 67. Southwest wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 67 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Low around 41. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.

    Low: 41 °F

    Showers

  • Friday

    Friday: A chance of showers before 2pm. Mostly cloudy, with a high near 48. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 48 °F

    Chance
    Showers

  • Friday Night

    Friday Night: Mostly clear, with a low around 22.

    Low: 22 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 33. Light and variable wind.
Wednesday
Mostly cloudy, with a high near 54. South wind 3 to 8 mph.
Wednesday Night
Mostly cloudy, with a low around 46. South wind around 7 mph.
Thursday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 67. Southwest wind 9 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers before 11pm, then showers and possibly a thunderstorm between 11pm and 2am, then showers after 2am. Low around 41. Southwest wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 90%. New rainfall amounts between three quarters and one inch possible.
Friday
A chance of showers before 2pm. Mostly cloudy, with a high near 48. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Mostly clear, with a low around 22.
Saturday
Sunny, with a high near 41.
Saturday Night
Partly cloudy, with a low around 27.
Sunday
Sunny, with a high near 51.
Sunday Night
Mostly cloudy, with a low around 36.
Monday
Partly sunny, with a high near 58.
Monday Night
Partly cloudy, with a low around 42.
Tuesday
A chance of showers. Partly sunny, with a high near 57. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.38°N 78.66°W (Elev. 2096 ft)
Last Update:
2:20 pm EDT Mar 24, 2026
Forecast Valid:
8pm EDT Mar 24, 2026-6pm EDT Mar 31, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation