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.

Fair

57°F

14°C

Humidity 93%
Wind Speed S 8 mph
Barometer 30.02 in (1016.1 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 13 Oct 4:54 am EDT
Extended Forecast for

Johnstown PA

  • Today

    Today: Patchy fog before 10am. Otherwise, sunny, with a high near 79. South wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 64. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.

    Low: 64 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 75. Southwest wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 53. Light north wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 53 °F

    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 56. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers

  • Friday

    Friday: Showers, mainly before 2pm. High near 65. Chance of precipitation is 80%.

    High: 65 °F

    Showers

  • Friday Night

    Friday Night: A chance of showers before 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.

    Low: 35 °F

    Chance
    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, sunny, with a high near 79. South wind 5 to 11 mph becoming southwest in the afternoon. Winds could gust as high as 22 mph.
Tonight
Mostly clear, with a low around 64. Southwest wind 7 to 10 mph, with gusts as high as 23 mph.
Wednesday
A chance of showers, with thunderstorms also possible after 3pm. Partly sunny, with a high near 75. Southwest wind 6 to 9 mph. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 53. Light north wind. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 66. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Showers likely, then showers and possibly a thunderstorm after 11pm. Low around 56. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers, mainly before 2pm. High near 65. Chance of precipitation is 80%.
Friday Night
A chance of showers before 2am. Mostly cloudy, with a low around 35. Chance of precipitation is 50%.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Widespread frost, mainly after 3am. Otherwise, mostly clear, with a low around 30.
Sunday
Widespread frost. Otherwise, sunny, with a high near 57.
Sunday Night
Mostly clear, with a low around 36.
Monday
Areas of frost. Otherwise, mostly sunny, with a high near 62.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
2:35 am EDT Oct 13, 2026
Forecast Valid:
5am EDT Oct 13, 2026-6pm EDT Oct 19, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation