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

55°F

13°C

Humidity 96%
Wind Speed E 5 mph
Barometer 30.15 in (1020.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Wind Chill54°F (12°C)
Last update 15 Oct 3:54 am EDT
Extended Forecast for

South Fork PA

  • Today

    Today: Mostly cloudy, with a high near 63. Northeast wind 5 to 8 mph becoming southeast in the afternoon.

    High: 63 °F

    Mostly Cloudy

  • Tonight

    Tonight: A slight chance of rain, then a chance of rain and thunderstorms after 11pm. Cloudy, with a low around 55. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance Rain

  • Friday

    Friday: Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 74. Southwest wind 11 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Slight Chance
    Rain then
    Showers

  • Friday Night

    Friday Night: Showers likely, mainly before 11pm. Mostly cloudy, with a low around 39. West wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 39 °F

    Showers
    Likely

  • Saturday

    Saturday: Mostly sunny, with a high near 48. North wind around 14 mph, with gusts as high as 29 mph.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 11pm. Otherwise, clear, with a low around 31.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 4am. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 8am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Areas Frost
    then Sunny

Detailed Forecast

Today
Mostly cloudy, with a high near 63. Northeast wind 5 to 8 mph becoming southeast in the afternoon.
Tonight
A slight chance of rain, then a chance of rain and thunderstorms after 11pm. Cloudy, with a low around 55. South wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 74. Southwest wind 11 to 18 mph, with gusts as high as 33 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers likely, mainly before 11pm. Mostly cloudy, with a low around 39. West wind around 16 mph, with gusts as high as 31 mph. Chance of precipitation is 70%. New precipitation amounts of less than a tenth of an inch possible.
Saturday
Mostly sunny, with a high near 48. North wind around 14 mph, with gusts as high as 29 mph.
Saturday Night
Widespread frost, mainly after 11pm. Otherwise, clear, with a low around 31.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57.
Sunday Night
Areas of frost after 4am. Otherwise, mostly clear, with a low around 35.
Monday
Areas of frost before 8am. Otherwise, sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 40.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 40.
Wednesday
Sunny, with a high near 62.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
South Fork PA
 40.37°N 78.77°W (Elev. 1542 ft)
Last Update:
3:11 am EDT Oct 15, 2026
Forecast Valid:
4am EDT Oct 15, 2026-6pm EDT Oct 21, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation