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.

Mostly Cloudy

72°F

22°C

Humidity 71%
Wind Speed W 10 mph
Barometer 30.03 in (1016.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 19 Aug 2:54 pm EDT
Extended Forecast for

Southmont PA

  • Tonight

    Tonight: A chance of rain, mainly after 2am. Mostly cloudy, with a low around 63. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 63 °F

    Mostly Cloudy
    then Chance
    Rain

  • Thursday

    Thursday: Periods of rain and possibly a thunderstorm, mainly before 5pm, then a chance of rain and thunderstorms after 5pm. High near 75. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 75 °F

    Rain

  • Thursday Night

    Thursday Night: A chance of rain and thunderstorms, mainly before 7pm. Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 57. 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: 57 °F

    Chance Rain
    and Patchy
    Fog then
    Areas Fog

  • Friday

    Friday: A chance of showers and thunderstorms after 2pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.

    High: 78 °F

    Areas Fog
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers. Partly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.

    Low: 60 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers after 8am. Partly sunny, with a high near 75. Chance of precipitation is 40%.

    High: 75 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 55.

    Low: 55 °F

    Partly Cloudy

Detailed Forecast

Tonight
A chance of rain, mainly after 2am. Mostly cloudy, with a low around 63. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Thursday
Periods of rain and possibly a thunderstorm, mainly before 5pm, then a chance of rain and thunderstorms after 5pm. High near 75. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday Night
A chance of rain and thunderstorms, mainly before 7pm. Patchy fog after 10pm. Otherwise, partly cloudy, with a low around 57. 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 after 2pm. Areas of fog before 10am. Otherwise, mostly sunny, with a high near 78. Calm wind becoming east around 5 mph in the afternoon. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers. Partly cloudy, with a low around 61. Light southeast wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 78. Chance of precipitation is 70%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 60. Chance of precipitation is 60%.
Sunday
A chance of showers after 8am. Partly sunny, with a high near 75. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 55.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Mostly cloudy, with a low around 58.
Wednesday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Southmont PA
 40.3°N 78.93°W (Elev. 1417 ft)
Last Update:
3:03 pm EDT Aug 19, 2026
Forecast Valid:
3pm EDT Aug 19, 2026-6pm EDT Aug 26, 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