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

63°F

17°C

Humidity 78%
Wind Speed SW 3 mph
Barometer 30.02 in (1015.6 mb)
Dewpoint 56°F (13°C)
Visibility 10.00 mi
Last update 19 Aug 12:54 am EDT
Extended Forecast for

Southmont PA

  • Overnight

    Overnight: Mostly clear, with a low around 58. Calm wind.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.

    High: 79 °F

    Patchy Fog
    then Partly
    Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Showers
    Likely and
    Patchy Fog

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 77. Light northwest wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Showers
    Likely and
    Areas Fog

  • Thursday Night

    Thursday Night: Showers likely and possibly a thunderstorm before 8pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely then
    Patchy Fog

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 78. Chance of precipitation is 20%.

    High: 78 °F

    Areas Fog
    then Slight
    Chance
    T-storms

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 60%.

    High: 78 °F

    Partly Sunny
    then Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

Detailed Forecast

Overnight
Mostly clear, with a low around 58. Calm wind.
Wednesday
Patchy fog between 7am and 8am. Otherwise, mostly sunny, with a high near 79. Calm wind becoming west 5 to 8 mph in the afternoon.
Wednesday Night
A chance of showers and thunderstorms, then showers likely after 3am. Patchy fog after 4am. Otherwise, mostly cloudy, with a low around 62. Light and variable wind. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Areas of fog before 10am. Otherwise, mostly cloudy, with a high near 77. Light northwest wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 57. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers and thunderstorms after 2pm. Areas of fog before 8am. Otherwise, mostly sunny, with a high near 78. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 60.
Saturday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Sunday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 74. Chance of precipitation is 60%.
Sunday Night
Showers likely and possibly a thunderstorm. Partly cloudy, with a low around 56. Chance of precipitation is 60%.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 57.
Tuesday
Mostly sunny, with a high near 77.
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ABOUT THIS FORECAST

 
Point Forecast:
Southmont PA
 40.3°N 78.93°W (Elev. 1417 ft)
Last Update:
8:11 pm EDT Aug 18, 2026
Forecast Valid:
1am EDT Aug 19, 2026-6pm EDT Aug 25, 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