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

63°F

17°C

Humidity 90%
Wind Speed NE 8 mph
Barometer 30.13 in (1018.9 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 18 Aug 6:54 am EDT
Extended Forecast for

South Fork PA

  • Today

    Today: Cloudy, then gradually becoming mostly sunny, with a high near 78. East wind around 6 mph.

    High: 78 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: Mostly cloudy, with a low around 60. Southeast wind around 6 mph.

    Low: 60 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers before 2pm. Partly sunny, with a high near 74. Southeast wind around 8 mph. Chance of precipitation is 20%.

    High: 74 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: A slight chance of showers after 2am. Mostly cloudy, with a low around 62. Southeast wind around 7 mph. Chance of precipitation is 20%.

    Low: 62 °F

    Partly Cloudy
    then Slight
    Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 8am. Partly sunny, with a high near 81. Chance of precipitation is 30%.

    High: 81 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 58.

    Low: 58 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 83.

    High: 83 °F

    Sunny

Detailed Forecast

Today
Cloudy, then gradually becoming mostly sunny, with a high near 78. East wind around 6 mph.
Tonight
Mostly cloudy, with a low around 60. Southeast wind around 6 mph.
Tuesday
A slight chance of showers before 2pm. Partly sunny, with a high near 74. Southeast wind around 8 mph. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers after 2am. Mostly cloudy, with a low around 62. Southeast wind around 7 mph. Chance of precipitation is 20%.
Wednesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. South wind around 6 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers after 8am. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Thursday Night
Mostly clear, with a low around 58.
Friday
Sunny, with a high near 83.
Friday Night
Mostly clear, with a low around 62.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Sunday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Fork PA
 40.35°N 78.78°W (Elev. 1683 ft)
Last Update:
6:49 am EDT Aug 18, 2025
Forecast Valid:
7am EDT Aug 18, 2025-6pm EDT Aug 24, 2025
 
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