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

19°F

-7°C

Humidity 37%
Wind Speed E 6 mph
Barometer 30.13 in (1024.0 mb)
Dewpoint -3°F (-19°C)
Visibility 10.00 mi
Wind Chill11°F (-12°C)
Last update 8 Dec 3:54 pm EST
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: Mostly cloudy during the early evening, then gradual clearing, with a low around 9. Calm wind.

    Low: 9 °F

    Gradual
    Clearing

  • Tuesday

    Tuesday: Mostly cloudy, with a high near 34. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph.

    High: 34 °F

    Mostly Cloudy

  • Tuesday Night

    Tuesday Night: A chance of rain and snow after 1am. Mostly cloudy, with a low around 29. Southwest wind 6 to 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 29 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

  • Wednesday

    Wednesday: Rain, possibly mixed with snow before 1pm, then rain between 1pm and 4pm, then rain and snow after 4pm. High near 41. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.

    High: 41 °F

    Rain/Snow

  • Wednesday Night

    Wednesday Night: Snow, possibly mixed with rain, becoming all snow after 10pm. Low around 24. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.

    Low: 24 °F

    Rain/Snow
    then Snow

  • Thursday

    Thursday: A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 40%.

    High: 28 °F

    Chance Snow
    Showers

  • Thursday Night

    Thursday Night: A chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.

    Low: 19 °F

    Chance Snow
    Showers

  • Friday

    Friday: A chance of snow showers. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.

    High: 29 °F

    Chance Snow
    Showers

  • Friday Night

    Friday Night: Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.

    Low: 16 °F

    Snow Showers
    Likely

Detailed Forecast

Tonight
Mostly cloudy during the early evening, then gradual clearing, with a low around 9. Calm wind.
Tuesday
Mostly cloudy, with a high near 34. Calm wind becoming south 5 to 9 mph in the morning. Winds could gust as high as 20 mph.
Tuesday Night
A chance of rain and snow after 1am. Mostly cloudy, with a low around 29. Southwest wind 6 to 8 mph. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Rain, possibly mixed with snow before 1pm, then rain between 1pm and 4pm, then rain and snow after 4pm. High near 41. Southwest wind 10 to 14 mph, with gusts as high as 28 mph. Chance of precipitation is 90%. New snow accumulation of less than a half inch possible.
Wednesday Night
Snow, possibly mixed with rain, becoming all snow after 10pm. Low around 24. West wind 11 to 14 mph, with gusts as high as 26 mph. Chance of precipitation is 80%. New snow accumulation of less than a half inch possible.
Thursday
A chance of snow showers. Mostly cloudy, with a high near 28. Chance of precipitation is 40%.
Thursday Night
A chance of snow showers. Mostly cloudy, with a low around 19. Chance of precipitation is 40%.
Friday
A chance of snow showers. Mostly cloudy, with a high near 29. Chance of precipitation is 50%.
Friday Night
Snow showers likely, mainly before 1am. Mostly cloudy, with a low around 16. Chance of precipitation is 60%.
Saturday
A chance of snow showers. Mostly cloudy, with a high near 25. Chance of precipitation is 40%.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 12. Chance of precipitation is 30%.
Sunday
Mostly cloudy, with a high near 22.
Sunday Night
Mostly cloudy, with a low around 9.
Monday
Mostly cloudy, with a high near 28.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
3:52 pm EST Dec 8, 2025
Forecast Valid:
4pm EST Dec 8, 2025-6pm EST Dec 15, 2025
 
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