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

69°F

21°C

Humidity 81%
Wind Speed W 8 mph
Barometer 30.05 in (1016.3 mb)
Dewpoint 63°F (17°C)
Visibility 10.00 mi
Last update 13 Aug 10:54 am EDT
Extended Forecast for

Westmont PA

  • Today

    Today: Partly sunny, with a high near 81. Northwest wind 5 to 7 mph.

    High: 81 °F

    Partly Sunny

  • Tonight

    Tonight: Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Friday

    Friday: A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 79. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Chance
    Showers and
    Areas Fog

  • Friday Night

    Friday Night: Cloudy, then gradually becoming partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: Mostly sunny, with a high near 81. Light southeast wind.

    High: 81 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Sunday

    Sunday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 83. Chance of precipitation is 80%.

    High: 83 °F

    Showers

  • Sunday Night

    Sunday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 81. Northwest wind 5 to 7 mph.
Tonight
Patchy fog after midnight. Otherwise, mostly cloudy, with a low around 63. Calm wind.
Friday
A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Areas of fog before 9am. Otherwise, partly sunny, with a high near 79. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
Cloudy, then gradually becoming partly cloudy, with a low around 60. Calm wind.
Saturday
Mostly sunny, with a high near 81. Light southeast wind.
Saturday Night
A chance of showers and thunderstorms after 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8am. High near 83. Chance of precipitation is 80%.
Sunday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 67. Chance of precipitation is 80%.
Monday
A chance of showers. Mostly cloudy, with a high near 79. Chance of precipitation is 50%.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Mostly clear, with a low around 60.
Wednesday
Sunny, with a high near 81.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Westmont PA
 40.32°N 78.96°W (Elev. 1729 ft)
Last Update:
10:51 am EDT Aug 13, 2026
Forecast Valid:
11am EDT Aug 13, 2026-6pm EDT Aug 19, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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