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

13°F

-11°C

Humidity 67%
Wind Speed S 8 mph
Barometer 30.06 in (1022.7 mb)
Dewpoint 4°F (-16°C)
Visibility 10.00 mi
Wind Chill2°F (-17°C)
Last update 15 Dec 6:54 pm EST
Extended Forecast for

Twin Rocks PA

  • Tonight

    Tonight: Mostly clear, with a low around 10. West wind around 6 mph.

    Low: 10 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 32. Wind chill values as low as zero. Southwest wind around 7 mph.

    High: 32 °F

    Mostly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a temperature rising to around 34 by 3am. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.

    Low: 26 °F⇑

    Partly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 38. West wind 10 to 14 mph, with gusts as high as 30 mph.

    High: 38 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 25. West wind 5 to 7 mph becoming southeast after midnight.

    Low: 25 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.

    High: 45 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Rain showers before 1am, then rain and snow showers likely. Low around 25. Breezy. Chance of precipitation is 100%.

    Low: 25 °F

    Showers then
    Rain/Snow and
    Breezy

  • Friday

    Friday: Mostly cloudy, with a high near 32.

    High: 32 °F

    Mostly Cloudy

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 18.

    Low: 18 °F

    Mostly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 10. West wind around 6 mph.
Tuesday
Mostly sunny, with a high near 32. Wind chill values as low as zero. Southwest wind around 7 mph.
Tuesday Night
Partly cloudy, with a temperature rising to around 34 by 3am. Southwest wind 6 to 13 mph, with gusts as high as 29 mph.
Wednesday
Mostly cloudy, with a high near 38. West wind 10 to 14 mph, with gusts as high as 30 mph.
Wednesday Night
Mostly cloudy, with a low around 25. West wind 5 to 7 mph becoming southeast after midnight.
Thursday
A chance of showers after 1pm. Partly sunny, with a high near 45. Chance of precipitation is 30%.
Thursday Night
Rain showers before 1am, then rain and snow showers likely. Low around 25. Breezy. Chance of precipitation is 100%.
Friday
Mostly cloudy, with a high near 32.
Friday Night
Mostly cloudy, with a low around 18.
Saturday
Mostly cloudy, with a high near 40.
Saturday Night
A chance of showers. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 38. Chance of precipitation is 30%.
Sunday Night
A chance of freezing rain. Mostly cloudy, with a low around 25. Chance of precipitation is 30%.
Monday
A chance of rain and snow showers. Mostly cloudy, with a high near 37. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Twin Rocks PA
 40.51°N 78.87°W (Elev. 1831 ft)
Last Update:
3:21 pm EST Dec 15, 2025
Forecast Valid:
7pm EST Dec 15, 2025-6pm EST Dec 22, 2025
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation