National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Overcast

30°F

-1°C

Humidity 88%
Wind Speed S 8 mph
Barometer 29.82 in (1012.3 mb)
Dewpoint 27°F (-3°C)
Visibility 8.00 mi
Wind Chill22°F (-6°C)
Last update 17 Jan 5:54 am EST
Extended Forecast for

Portage PA

Winter Weather Advisory January 17, 06:11am until January 18, 01:00am
Click here for hazard details and duration
Winter Weather Advisory
  •  
    Winter Weather Advisory January 17, 06:11am until January 18, 01:00am

    NOW until 1:00am Sun

    Winter Weather Advisory

  • Today

    High: 36 °F

    Snow Likely
    then Mostly
    Cloudy

  • Tonight

    Tonight: A slight chance of snow showers before 2am. Mostly cloudy, with a low around 18. West wind around 6 mph. Chance of precipitation is 20%.

    Low: 18 °F

    Slight Chance
    Snow Showers

  • Sunday

    Sunday: Mostly cloudy, with a high near 21. West wind 6 to 10 mph, with gusts as high as 20 mph.

    High: 21 °F

    Mostly Cloudy

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 15. West wind 6 to 9 mph, with gusts as high as 20 mph.

    Low: 15 °F

    Mostly Cloudy

  • M.L.King Day

    M.L.King Day: A slight chance of snow showers. Mostly cloudy, with a high near 23. Southwest wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.

    High: 23 °F

    Slight Chance
    Snow Showers

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 3.

    Low: 3 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 12.

    High: 12 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 7.

    Low: 7 °F

    Partly Cloudy

Detailed Forecast

Today
Snow likely, mainly before 10am. Mostly cloudy, with a high near 36. Southwest wind 6 to 10 mph, with gusts as high as 22 mph. Chance of precipitation is 60%. Total daytime snow accumulation of less than one inch possible.
Tonight
A slight chance of snow showers before 2am. Mostly cloudy, with a low around 18. West wind around 6 mph. Chance of precipitation is 20%.
Sunday
Mostly cloudy, with a high near 21. West wind 6 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly cloudy, with a low around 15. West wind 6 to 9 mph, with gusts as high as 20 mph.
M.L.King Day
A slight chance of snow showers. Mostly cloudy, with a high near 23. Southwest wind 10 to 18 mph, with gusts as high as 34 mph. Chance of precipitation is 20%.
Monday Night
Mostly cloudy, with a low around 3.
Tuesday
Partly sunny, with a high near 12.
Tuesday Night
Partly cloudy, with a low around 7.
Wednesday
A chance of snow showers after 1pm. Partly sunny, with a high near 34. Chance of precipitation is 30%.
Wednesday Night
A chance of snow showers. Mostly cloudy, with a low around 24. Chance of precipitation is 30%.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 29. Chance of precipitation is 40%.
Thursday Night
Mostly cloudy, with a low around 13.
Friday
Partly sunny, with a high near 25.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.39°N 78.68°W (Elev. 1621 ft)
Last Update:
1:26 am EST Jan 17, 2026
Forecast Valid:
6am EST Jan 17, 2026-6pm EST Jan 23, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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