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

62°F

17°C

Humidity 34%
Wind Speed SW 10 G 21 mph
Barometer 29.99 in (1015.7 mb)
Dewpoint 33°F (1°C)
Visibility 10.00 mi
Last update 9 Mar 1:54 pm EDT
Extended Forecast for

Twin Rocks PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 67. Southwest wind around 11 mph, with gusts as high as 23 mph.

    High: 67 °F

    Sunny

  • Tonight

    Tonight: Increasing clouds, with a low around 51. Southwest wind around 6 mph.

    Low: 51 °F

    Increasing
    Clouds

  • Tuesday

    Tuesday: A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 68. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.

    High: 68 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 59. South wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 71. Southwest wind 9 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 71 °F

    Showers

  • Wednesday Night

    Wednesday Night: Rain showers before 5am, then snow showers likely, possibly mixed with rain. Some thunder is also possible. Low around 33. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 33 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: Snow showers likely before 8am. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.

    High: 39 °F

    Snow Showers
    Likely then
    Mostly Cloudy

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 27.

    Low: 27 °F

    Partly Cloudy

  • Friday

    Friday: A chance of snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.

    High: 50 °F

    Chance Snow
    Showers then
    Chance
    Rain/Snow

Detailed Forecast

This Afternoon
Sunny, with a high near 67. Southwest wind around 11 mph, with gusts as high as 23 mph.
Tonight
Increasing clouds, with a low around 51. Southwest wind around 6 mph.
Tuesday
A slight chance of showers before 4pm, then a slight chance of showers after 5pm. Partly sunny, with a high near 68. Southwest wind 7 to 10 mph, with gusts as high as 21 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 59. South wind around 6 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Wednesday
Showers and thunderstorms before 11am, then showers between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. High near 71. Southwest wind 9 to 14 mph, with gusts as high as 30 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain showers before 5am, then snow showers likely, possibly mixed with rain. Some thunder is also possible. Low around 33. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Snow showers likely before 8am. Mostly cloudy, with a high near 39. Chance of precipitation is 60%.
Thursday Night
Partly cloudy, with a low around 27.
Friday
A chance of snow showers before 2pm, then a chance of rain showers. Mostly cloudy, with a high near 50. Chance of precipitation is 50%.
Friday Night
A chance of rain showers, mixing with snow after 8pm, then gradually ending. Mostly cloudy, with a low around 29. Chance of precipitation is 30%.
Saturday
Partly sunny, with a high near 44.
Saturday Night
A chance of snow showers. Mostly cloudy, with a low around 32. Chance of precipitation is 40%.
Sunday
A chance of rain and snow showers. Mostly cloudy, with a high near 57. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Twin Rocks PA
 40.53°N 78.84°W (Elev. 1900 ft)
Last Update:
12:21 pm EDT Mar 9, 2026
Forecast Valid:
2pm EDT Mar 9, 2026-6pm EDT Mar 15, 2026
 
Forecast Discussion
 
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Additional Resources

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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