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.

Overcast

59°F

15°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 29.97 in (1013.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Mar 2:54 am EDT
Extended Forecast for

2 Miles SSE Twin Rocks PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 59. South wind around 7 mph.

    Low: 59 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 71. South wind 10 to 15 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 71 °F

    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. West wind 15 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 30 °F

    Showers then
    Rain/Snow

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 38. Northwest wind around 18 mph, with gusts as high as 39 mph.

    High: 38 °F

    Decreasing
    Clouds

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 29. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.

    Low: 29 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 50. Breezy. Chance of precipitation is 30%.

    High: 50 °F

    Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: A chance of rain before 8pm. Partly cloudy, with a low around 28. Breezy. Chance of precipitation is 30%.

    Low: 28 °F

    Chance Rain
    and Breezy
    then Mostly
    Cloudy

  • Saturday

    Saturday: Mostly sunny, with a high near 42.

    High: 42 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of rain and snow showers after 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.

    Low: 32 °F

    Mostly Cloudy
    then Chance
    Rain/Snow

Detailed Forecast

Overnight
Mostly cloudy, with a low around 59. South wind around 7 mph.
Wednesday
Showers and thunderstorms, mainly before 3pm, then showers likely and possibly a thunderstorm after 5pm. Some of the storms could be severe. High near 71. South wind 10 to 15 mph, with gusts as high as 36 mph. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Wednesday Night
Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. West wind 15 to 18 mph, with gusts as high as 36 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 38. Northwest wind around 18 mph, with gusts as high as 39 mph.
Thursday Night
Mostly clear, with a low around 29. Southwest wind 6 to 10 mph, with gusts as high as 21 mph.
Friday
A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a chance of rain after 2pm. Mostly cloudy, with a high near 50. Breezy. Chance of precipitation is 30%.
Friday Night
A chance of rain before 8pm. Partly cloudy, with a low around 28. Breezy. Chance of precipitation is 30%.
Saturday
Mostly sunny, with a high near 42.
Saturday Night
A chance of rain and snow showers after 2am. Mostly cloudy, with a low around 32. Chance of precipitation is 30%.
Sunday
A chance of rain and snow showers before 8am. Mostly cloudy, with a high near 56. Chance of precipitation is 30%.
Sunday Night
Showers. Low around 35. Breezy. Chance of precipitation is 90%.
Monday
Rain and snow showers. High near 46. Breezy. Chance of precipitation is 80%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Breezy. Chance of precipitation is 30%.
Tuesday
Mostly cloudy, with a high near 27.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Twin Rocks PA
 40.51°N 78.84°W (Elev. 2103 ft)
Last Update:
2:26 am EDT Mar 11, 2026
Forecast Valid:
3am EDT Mar 11, 2026-6pm EDT Mar 17, 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