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.

Mostly Cloudy

51°F

11°C

Humidity 71%
Wind Speed W 20 G 32 mph
Barometer 30.08 in (1019.4 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Wind Chill45°F (7°C)
Last update 9 Jan 7:54 pm EST
Extended Forecast for

Portage PA

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 36 mph.

    Low: 36 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Saturday

    Saturday: Rain, mainly after noon. Patchy fog between 7am and 8am. High near 45. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 45 °F

    Chance Rain
    and Patchy
    Fog then Rain

  • Saturday Night

    Saturday Night: Rain before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Low around 28. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 28 °F

    Rain then
    Rain/Snow

  • Sunday

    Sunday: Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. Breezy, with a west wind 14 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.

    High: 31 °F

    Snow Showers
    Likely and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 23. West wind 15 to 18 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.

    Low: 23 °F

    Slight Chance
    Snow Showers

  • Monday

    Monday: Partly sunny, with a high near 33.

    High: 33 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 27.

    Low: 27 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 36. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 36 mph.
Saturday
Rain, mainly after noon. Patchy fog between 7am and 8am. High near 45. Calm wind becoming southeast 5 to 8 mph in the morning. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain before 1am, then a slight chance of rain and snow showers between 1am and 4am, then a slight chance of snow showers after 4am. Low around 28. South wind 6 to 14 mph becoming west after midnight. Winds could gust as high as 28 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
Snow showers likely, mainly after 1pm. Mostly cloudy, with a high near 31. Breezy, with a west wind 14 to 20 mph, with gusts as high as 40 mph. Chance of precipitation is 60%. New snow accumulation of less than a half inch possible.
Sunday Night
A slight chance of snow showers before 1am. Mostly cloudy, with a low around 23. West wind 15 to 18 mph, with gusts as high as 46 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 33.
Monday Night
Mostly clear, with a low around 27.
Tuesday
Mostly sunny, with a high near 42.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A chance of rain. Mostly cloudy, with a high near 39. Chance of precipitation is 50%.
Wednesday Night
A chance of rain and snow. Mostly cloudy, with a low around 22. Chance of precipitation is 40%.
Thursday
A chance of snow. Mostly cloudy, with a high near 27. Chance of precipitation is 30%.
Thursday Night
Mostly cloudy, with a low around 15.
Friday
A chance of snow. Partly sunny, with a high near 27. 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
 40.39°N 78.68°W (Elev. 1621 ft)
Last Update:
8:11 pm EST Jan 9, 2026
Forecast Valid:
8pm EST Jan 9, 2026-6pm EST Jan 16, 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