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.

Overcast

52°F

11°C

Humidity 93%
Wind Speed N 6 mph
Barometer 30.16 in (1021.4 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 15 Oct 2:54 am EDT
Extended Forecast for

Portage PA

  • Overnight

    Overnight: Partly cloudy, with a low around 49. Northwest wind around 6 mph.

    Low: 49 °F

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, then gradually becoming sunny, with a high near 61. Northwest wind 7 to 14 mph, with gusts as high as 25 mph.

    High: 61 °F

    Decreasing
    Clouds

  • Wednesday Night

    Wednesday Night: Clear, with a low around 36. North wind 6 to 10 mph, with gusts as high as 23 mph.

    Low: 36 °F

    Clear

  • Thursday

    Thursday: Areas of frost before 9am. Otherwise, sunny, with a high near 57. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.

    High: 57 °F

    Areas Frost
    then Sunny

  • Thursday Night

    Thursday Night: Areas of frost after 3am. Otherwise, clear, with a low around 34. Northwest wind 5 to 9 mph.

    Low: 34 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Frost then
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 42.

    Low: 42 °F

    Partly Cloudy

  • Saturday

    Saturday: Partly sunny, with a high near 67.

    High: 67 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.

    Low: 49 °F

    Partly Cloudy
    then Chance
    Showers

Detailed Forecast

Overnight
Partly cloudy, with a low around 49. Northwest wind around 6 mph.
Wednesday
Mostly cloudy, then gradually becoming sunny, with a high near 61. Northwest wind 7 to 14 mph, with gusts as high as 25 mph.
Wednesday Night
Clear, with a low around 36. North wind 6 to 10 mph, with gusts as high as 23 mph.
Thursday
Areas of frost before 9am. Otherwise, sunny, with a high near 57. Northwest wind 6 to 13 mph, with gusts as high as 22 mph.
Thursday Night
Areas of frost after 3am. Otherwise, clear, with a low around 34. Northwest wind 5 to 9 mph.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 59.
Friday Night
Partly cloudy, with a low around 42.
Saturday
Partly sunny, with a high near 67.
Saturday Night
A chance of showers after 2am. Mostly cloudy, with a low around 49. Chance of precipitation is 30%.
Sunday
Showers likely, mainly after 2pm. Mostly cloudy, with a high near 63. Chance of precipitation is 60%.
Sunday Night
Showers likely. Mostly cloudy, with a low around 45. Chance of precipitation is 70%.
Monday
A chance of showers. Partly sunny, with a high near 56. Chance of precipitation is 30%.
Monday Night
Partly cloudy, with a low around 43.
Tuesday
Mostly sunny, with a high near 58.
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:
2:05 am EDT Oct 15, 2025
Forecast Valid:
3am EDT Oct 15, 2025-6pm EDT Oct 21, 2025
 
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