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

56°F

13°C

Humidity 60%
Wind Speed W 5 mph
Barometer 30.05 in (1018.1 mb)
Dewpoint 42°F (6°C)
Visibility 10.00 mi
Last update 15 May 8:54 pm EDT
Extended Forecast for

Saint Michael-Sidman PA

  • Tonight

    Tonight: Partly cloudy, with a low around 48. Light south wind.

    Low: 48 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, mainly after 5pm. Increasing clouds, with a high near 78. Southwest wind 5 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 78 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 59. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79. West wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 61. Calm wind.

    Low: 61 °F

    Mostly Clear

  • Monday

    Monday: A slight chance of showers after 2pm. Sunny, with a high near 88. Chance of precipitation is 20%.

    High: 88 °F

    Sunny then
    Slight Chance
    Showers

  • Monday Night

    Monday Night: Partly cloudy, with a low around 66.

    Low: 66 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 87.

    High: 87 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Tonight
Partly cloudy, with a low around 48. Light south wind.
Saturday
A chance of showers, mainly after 5pm. Increasing clouds, with a high near 78. Southwest wind 5 to 11 mph, with gusts as high as 23 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely, mainly between 8pm and 11pm. Mostly cloudy, with a low around 59. West wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 79. West wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 61. Calm wind.
Monday
A slight chance of showers after 2pm. Sunny, with a high near 88. Chance of precipitation is 20%.
Monday Night
Partly cloudy, with a low around 66.
Tuesday
Sunny, with a high near 87.
Tuesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Wednesday
Showers, mainly after 2pm. High near 76. Chance of precipitation is 80%.
Wednesday Night
Showers. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 70.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Saint Michael-Sidman PA
 40.33°N 78.78°W (Elev. 1798 ft)
Last Update:
8:06 pm EDT May 15, 2026
Forecast Valid:
9pm EDT May 15, 2026-6pm EDT May 22, 2026
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation