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.

63°F

17°C

Humidity 97%
Wind Speed Calm
Barometer 30.12 in (1018.8 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 28 Aug 8:54 am EDT
Extended Forecast for

South Fork PA

  • Today

    Today: Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming northwest 5 to 7 mph in the afternoon.

    High: 77 °F

    Patchy Dense
    Fog then
    Mostly Sunny

  • Tonight

    Tonight: Patchy fog after 4am. Otherwise, mostly clear, with a low around 52. Light and variable wind.

    Low: 52 °F

    Mostly Clear
    then Patchy
    Fog

  • Saturday

    Saturday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. Light and variable wind.

    High: 79 °F

    Patchy Fog
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Light and variable wind becoming west 5 to 7 mph in the morning.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 65.

    Low: 65 °F

    Mostly Cloudy

  • Monday

    Monday: Partly sunny, with a high near 82.

    High: 82 °F

    Partly Sunny

  • Monday Night

    Monday Night: Mostly cloudy, with a low around 68.

    Low: 68 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Partly sunny, with a high near 84.

    High: 84 °F

    Partly Sunny

Detailed Forecast

Today
Patchy dense fog before 9am. Otherwise, mostly sunny, with a high near 77. Calm wind becoming northwest 5 to 7 mph in the afternoon.
Tonight
Patchy fog after 4am. Otherwise, mostly clear, with a low around 52. Light and variable wind.
Saturday
Patchy fog before 8am. Otherwise, mostly sunny, with a high near 79. Light and variable wind.
Saturday Night
Partly cloudy, with a low around 60. Calm wind.
Sunday
Mostly sunny, with a high near 80. Light and variable wind becoming west 5 to 7 mph in the morning.
Sunday Night
Mostly cloudy, with a low around 65.
Monday
Partly sunny, with a high near 82.
Monday Night
Mostly cloudy, with a low around 68.
Tuesday
Partly sunny, with a high near 84.
Tuesday Night
Partly cloudy, with a low around 69.
Wednesday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 80. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Fork PA
 40.37°N 78.8°W (Elev. 1572 ft)
Last Update:
8:06 am EDT Aug 28, 2026
Forecast Valid:
8am EDT Aug 28, 2026-6pm EDT Sep 3, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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