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

45°F

7°C

Humidity 77%
Wind Speed NW 17 G 28 mph
Barometer 30.11 in (1020.6 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 9 Jan 8:54 pm EST
Extended Forecast for

Portage PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 35. Northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 33 mph.

    Low: 35 °F

    Mostly Cloudy

  • Saturday

    Saturday: Rain, mainly after 11am. High near 43. Southeast wind 5 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 43 °F

    Rain Likely
    then Rain

  • Saturday Night

    Saturday Night: Rain before 1am, then a slight chance of snow showers. Low around 26. South wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.

    Low: 26 °F

    Rain then
    Rain/Snow

  • Sunday

    Sunday: A chance of snow showers. Mostly cloudy, with a high near 29. Breezy, with a west wind 17 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 50%. New snow accumulation of less than a half inch possible.

    High: 29 °F

    Chance Snow
    Showers and
    Breezy

  • Sunday Night

    Sunday Night: A slight chance of snow showers before 1am. Mostly cloudy, with a low around 22. Breezy, with a west wind 20 to 24 mph, with gusts as high as 49 mph. Chance of precipitation is 20%.

    Low: 22 °F

    Slight Chance
    Snow Showers
    and Breezy

  • Monday

    Monday: Partly sunny, with a high near 31.

    High: 31 °F

    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 26.

    Low: 26 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Mostly sunny, with a high near 41.

    High: 41 °F

    Mostly Sunny

  • Tuesday Night

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

    Low: 34 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly cloudy, with a low around 35. Northwest wind 8 to 13 mph becoming light and variable after midnight. Winds could gust as high as 33 mph.
Saturday
Rain, mainly after 11am. High near 43. Southeast wind 5 to 9 mph. Chance of precipitation is 100%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday Night
Rain before 1am, then a slight chance of snow showers. Low around 26. South wind 9 to 18 mph becoming west after midnight. Winds could gust as high as 32 mph. Chance of precipitation is 80%. Little or no snow accumulation expected.
Sunday
A chance of snow showers. Mostly cloudy, with a high near 29. Breezy, with a west wind 17 to 22 mph, with gusts as high as 45 mph. Chance of precipitation is 50%. 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 22. Breezy, with a west wind 20 to 24 mph, with gusts as high as 49 mph. Chance of precipitation is 20%.
Monday
Partly sunny, with a high near 31.
Monday Night
Partly cloudy, with a low around 26.
Tuesday
Mostly sunny, with a high near 41.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
A chance of rain before 1pm, then a chance of rain and snow. Cloudy, with a high near 38. 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 26. 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 26. 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
 40.36°N 78.66°W (Elev. 2103 ft)
Last Update:
8:36 pm EST Jan 9, 2026
Forecast Valid:
9pm 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