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

67°F

19°C

Humidity 49%
Wind Speed NW 15 mph
Barometer 29.88 in (1010.8 mb)
Dewpoint 47°F (8°C)
Visibility 10.00 mi
Last update 19 Jun 3:54 pm EDT
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: A slight chance of sprinkles before 7pm. Mostly clear, with a low around 54. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.

    Low: 54 °F

    Slight Chance
    Sprinkles

  • Saturday

    Saturday: A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 73. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms, mainly between 10pm and 11pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 55. 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: 55 °F

    Chance
    Showers then
    Patchy Fog

  • Sunday

    Sunday: Patchy fog before 8am. Otherwise, mostly sunny, with a high near 77. West wind 3 to 7 mph.

    High: 77 °F

    Patchy Fog
    then Mostly
    Sunny

  • Sunday Night

    Sunday Night: A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 59. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Chance
    Showers then
    Showers

  • Monday

    Monday: Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 75. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.

    High: 75 °F

    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.

    Low: 56 °F

    Chance
    T-storms then
    Chance
    Showers

  • Tuesday

    Tuesday: Partly sunny, with a high near 74.

    High: 74 °F

    Partly Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 54.

    Low: 54 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of sprinkles before 7pm. Mostly clear, with a low around 54. West wind 6 to 11 mph becoming light and variable after midnight. Winds could gust as high as 24 mph.
Saturday
A slight chance of showers, then a chance of showers and thunderstorms after 3pm. Increasing clouds, with a high near 73. West wind 6 to 11 mph, with gusts as high as 22 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms, mainly between 10pm and 11pm. Patchy fog after 4am. Otherwise, partly cloudy, with a low around 55. 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 8am. Otherwise, mostly sunny, with a high near 77. West wind 3 to 7 mph.
Sunday Night
A chance of showers, then showers and possibly a thunderstorm after 2am. Low around 59. Calm wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Monday
Showers and possibly a thunderstorm before 8am, then showers between 8am and 11am, then showers and possibly a thunderstorm after 11am. High near 75. Chance of precipitation is 100%. New rainfall amounts between three quarters and one inch possible.
Monday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 56. Chance of precipitation is 50%.
Tuesday
Partly sunny, with a high near 74.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Mostly sunny, with a high near 76.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Thursday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 76. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
2:21 pm EDT Jun 19, 2026
Forecast Valid:
4pm EDT Jun 19, 2026-6pm EDT Jun 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