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.

A Few Clouds

70°F

21°C

Humidity 51%
Wind Speed W 15 G 22 mph
Barometer 29.92 in (1012.3 mb)
Dewpoint 51°F (11°C)
Visibility 10.00 mi
Last update 20 Jun 4:54 pm EDT
Extended Forecast for

Westmont PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Partly sunny, with a high near 73. West wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Chance
    T-storms

  • Tonight

    Tonight: A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 54 °F

    Chance
    T-storms then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 7am. Otherwise, mostly sunny, with a high near 75. West wind 3 to 8 mph.

    High: 75 °F

    Patchy Fog
    then Partly
    Sunny

  • Sunday Night

    Sunday Night: A chance of showers, mainly after 5am. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 58 °F

    Mostly Cloudy
    then Chance
    Showers

  • Monday

    Monday: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 74. Southeast wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 74 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 58. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    Showers

  • Tuesday

    Tuesday: A chance of showers before 8am. Partly sunny, with a high near 74. Chance of precipitation is 30%.

    High: 74 °F

    Chance
    Showers then
    Partly Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Partly sunny, with a high near 73. West wind around 9 mph, with gusts as high as 23 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 10pm, then a slight chance of showers between 10pm and midnight. Patchy fog between 4am and 5am. Otherwise, partly cloudy, with a low around 54. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Patchy fog before 7am. Otherwise, mostly sunny, with a high near 75. West wind 3 to 8 mph.
Sunday Night
A chance of showers, mainly after 5am. Mostly cloudy, with a low around 58. Calm wind. Chance of precipitation is 30%. New precipitation amounts between a tenth and quarter of an inch possible.
Monday
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 7am. High near 74. Southeast wind 6 to 9 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a chance of showers. Low around 58. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A chance of showers before 8am. Partly sunny, with a high near 74. Chance of precipitation is 30%.
Tuesday Night
Mostly clear, with a low around 53.
Wednesday
Sunny, with a high near 77.
Wednesday Night
Partly cloudy, with a low around 57.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Thursday Night
A chance of thunderstorms. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Partly sunny, with a high near 77. Chance of precipitation is 40%.
Friday Night
A chance of thunderstorms. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 78.
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:
3:11 pm EDT Jun 20, 2026
Forecast Valid:
5pm EDT Jun 20, 2026-6pm EDT Jun 27, 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