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

46°F

8°C

Humidity 56%
Wind Speed NW 7 mph
Barometer 30.08 in (1019.9 mb)
Dewpoint 31°F (-1°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 16 Oct 7:54 pm EDT
Extended Forecast for

3 Miles SE Portage PA

  • Tonight

    Tonight: Areas of frost after 1am. Otherwise, clear, with a low around 34. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 34 °F

    Clear then
    Areas Frost

  • Friday

    Friday: Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 56. Northwest wind around 7 mph.

    High: 56 °F

    Frost then
    Mostly Sunny

  • Friday Night

    Friday Night: Increasing clouds, with a low around 44. Northwest wind around 5 mph becoming light and variable in the evening.

    Low: 44 °F

    Increasing
    Clouds

  • Saturday

    Saturday: Partly sunny, with a high near 65. South wind 6 to 8 mph.

    High: 65 °F

    Partly Sunny

  • Saturday Night

    Saturday Night: A chance of showers after 2am. Partly cloudy, with a low around 50. South wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 50 °F

    Partly Cloudy
    then Chance
    Showers

  • Sunday

    Sunday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 64. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 64 °F

    Chance
    Showers then
    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 45. Breezy. Chance of precipitation is 80%.

    Low: 45 °F

    Showers and
    Breezy

  • Monday

    Monday: A chance of showers before 2pm. Partly sunny, with a high near 53. Chance of precipitation is 30%.

    High: 53 °F

    Chance
    Showers

  • Monday Night

    Monday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Tonight
Areas of frost after 1am. Otherwise, clear, with a low around 34. Northwest wind 6 to 10 mph, with gusts as high as 21 mph.
Friday
Widespread frost, mainly before 8am. Otherwise, sunny, with a high near 56. Northwest wind around 7 mph.
Friday Night
Increasing clouds, with a low around 44. Northwest wind around 5 mph becoming light and variable in the evening.
Saturday
Partly sunny, with a high near 65. South wind 6 to 8 mph.
Saturday Night
A chance of showers after 2am. Partly cloudy, with a low around 50. South wind around 10 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 64. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday Night
Showers and possibly a thunderstorm before 8pm, then showers likely. Low around 45. Breezy. Chance of precipitation is 80%.
Monday
A chance of showers before 2pm. Partly sunny, with a high near 53. Chance of precipitation is 30%.
Monday Night
Mostly clear, with a low around 42.
Tuesday
A chance of showers after 2pm. Partly sunny, with a high near 60. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 41. Chance of precipitation is 50%.
Wednesday
A chance of showers. Partly sunny, with a high near 47. Chance of precipitation is 30%.
Wednesday Night
Mostly cloudy, with a low around 39.
Thursday
Partly sunny, with a high near 50.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Portage PA
 40.36°N 78.63°W (Elev. 2326 ft)
Last Update:
8:06 pm EDT Oct 16, 2025
Forecast Valid:
8pm EDT Oct 16, 2025-6pm EDT Oct 23, 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