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

71°F

22°C

Humidity 61%
Wind Speed N 5 mph
Barometer 30.12 in (1019.0 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 25 May 5:54 pm EDT
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: Mostly cloudy, with a low around 56. Calm wind.

    Low: 56 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: A slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 78. Light and variable wind. Chance of precipitation is 20%.

    High: 78 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Mostly Cloudy
    then Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Light west wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Patchy fog between 4am and 5am. Otherwise, mostly cloudy, with a low around 57. Calm wind.

    Low: 57 °F

    Mostly Cloudy
    then Patchy
    Fog

  • Thursday

    Thursday: Mostly sunny, with a high near 74.

    High: 74 °F

    Mostly Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 73.

    High: 73 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 49.

    Low: 49 °F

    Mostly Clear

Detailed Forecast

Tonight
Mostly cloudy, with a low around 56. Calm wind.
Tuesday
A slight chance of showers and thunderstorms after 3pm. Mostly cloudy, with a high near 78. Light and variable wind. Chance of precipitation is 20%.
Tuesday Night
A slight chance of showers and thunderstorms before 8pm, then a chance of showers after 2am. Mostly cloudy, with a low around 61. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 77. Light west wind. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
Patchy fog between 4am and 5am. Otherwise, mostly cloudy, with a low around 57. Calm wind.
Thursday
Mostly sunny, with a high near 74.
Thursday Night
Mostly clear, with a low around 49.
Friday
Sunny, with a high near 73.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 71.
Saturday Night
Partly cloudy, with a low around 49.
Sunday
Mostly sunny, with a high near 70.
Sunday Night
Mostly clear, with a low around 49.
Monday
Sunny, with a high near 71.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
2:36 pm EDT May 25, 2026
Forecast Valid:
6pm EDT May 25, 2026-6pm EDT Jun 1, 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