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

63°F

17°C

Humidity 76%
Wind Speed SE 10 mph
Barometer 30.17 in (1020.4 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 24 Jul 11:54 pm EDT
Extended Forecast for

Portage PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. Southeast wind around 7 mph.

    Low: 59 °F

    Mostly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 76. Southeast wind 6 to 8 mph.

    High: 76 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. Light southeast wind.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    Showers

  • Monday

    Monday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Showers
    Likely

  • Monday Night

    Monday Night: Showers likely and possibly a thunderstorm, then showers after 2am. Low around 65. Chance of precipitation is 80%.

    Low: 65 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 2pm. High near 76. Chance of precipitation is 80%.

    High: 76 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers then
    Chance
    T-storms

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. Southeast wind around 7 mph.
Saturday
Partly sunny, with a high near 76. Southeast wind 6 to 8 mph.
Saturday Night
Partly cloudy, with a low around 60. Light southeast wind.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 78. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers likely and possibly a thunderstorm, then showers after 2am. Low around 65. Chance of precipitation is 80%.
Tuesday
Showers, with thunderstorms also possible after 2pm. High near 76. Chance of precipitation is 80%.
Tuesday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Low around 62. Chance of precipitation is 80%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 77.
Thursday Night
Partly cloudy, with a low around 60.
Friday
A chance of showers. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.38°N 78.66°W (Elev. 2096 ft)
Last Update:
8:11 pm EDT Jul 24, 2026
Forecast Valid:
12am EDT Jul 25, 2026-6pm EDT Jul 31, 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