National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Light Rain

77°F

25°C

Humidity 74%
Wind Speed Vrbl 6 mph
Barometer 30.22 in (1021.7 mb)
Dewpoint 68°F (20°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 6 Aug 1:54 pm EDT
Extended Forecast for

South Fork PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 82. West wind around 6 mph. Chance of precipitation is 40%.

    High: 82 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms and
    Patchy Fog
    then Patchy
    Fog

  • Friday

    Friday: A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 81. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 81 °F

    Chance
    Showers and
    Patchy Fog
    then T-storms
    Likely

  • Friday Night

    Friday Night: Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 66. Light southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    T-storms
    Likely then
    Chance
    Showers

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 80. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 80 °F

    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.

    Low: 65 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.

    High: 81 °F

    Partly Sunny
    then Chance
    T-storms

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 82. West wind around 6 mph. Chance of precipitation is 40%.
Tonight
A chance of showers and thunderstorms, mainly before 8pm. Patchy fog after 10pm. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers and thunderstorms before 2pm, then showers likely and possibly a thunderstorm between 2pm and 5pm, then showers and thunderstorms likely after 5pm. Patchy fog before 10am. Otherwise, partly sunny, with a high near 81. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms likely before 5am, then a chance of showers. Mostly cloudy, with a low around 66. Light southwest wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 11am. Partly sunny, with a high near 80. West wind 6 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Sunday
Mostly sunny, with a high near 80.
Sunday Night
Partly cloudy, with a low around 64.
Monday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Monday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 50%.
Tuesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 80. Chance of precipitation is 70%.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 64. Chance of precipitation is 70%.
Wednesday
Showers likely and possibly a thunderstorm. Mostly cloudy, with a high near 77. Chance of precipitation is 60%.
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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:
2:05 pm EDT Aug 6, 2026
Forecast Valid:
2pm EDT Aug 6, 2026-6pm EDT Aug 12, 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