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

63°F

17°C

Humidity 20%
Wind Speed N 5 mph
Barometer 30.37 in (1029.0 mb)
Dewpoint 21°F (-6°C)
Visibility 10.00 mi
Last update 19 Oct 2:54 pm EDT
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: Clear, with a low around 40. Calm wind.

    Low: 40 °F

    Clear

  • Tuesday

    Tuesday: Patchy fog between 9am and 10am. Otherwise, sunny, with a high near 67. Calm wind becoming north around 5 mph in the afternoon.

    High: 67 °F

    Patchy Fog
    then Sunny

  • Tuesday Night

    Tuesday Night: Patchy fog after 3am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.

    Low: 36 °F

    Mostly Clear
    then Patchy
    Frost and
    Patchy Fog

  • Wednesday

    Wednesday: Areas of fog before 10am. Patchy frost before 9am. Otherwise, sunny, with a high near 64. Light north wind.

    High: 64 °F

    Patchy Frost
    and Areas Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Patchy fog after 3am. Patchy frost after 4am. Otherwise, clear, with a low around 35. Calm wind.

    Low: 35 °F

    Clear then
    Patchy Frost
    and Patchy
    Fog

  • Thursday

    Thursday: Areas of fog before 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 63.

    High: 63 °F

    Patchy Frost
    and Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Friday

    Friday: Sunny, with a high near 58.

    High: 58 °F

    Sunny

  • Friday Night

    Friday Night: Patchy frost after 4am. Otherwise, clear, with a low around 34.

    Low: 34 °F

    Clear then
    Patchy Frost

Detailed Forecast

Tonight
Clear, with a low around 40. Calm wind.
Tuesday
Patchy fog between 9am and 10am. Otherwise, sunny, with a high near 67. Calm wind becoming north around 5 mph in the afternoon.
Tuesday Night
Patchy fog after 3am. Patchy frost after 5am. Otherwise, mostly clear, with a low around 36. Calm wind.
Wednesday
Areas of fog before 10am. Patchy frost before 9am. Otherwise, sunny, with a high near 64. Light north wind.
Wednesday Night
Patchy fog after 3am. Patchy frost after 4am. Otherwise, clear, with a low around 35. Calm wind.
Thursday
Areas of fog before 9am. Patchy frost before 9am. Otherwise, sunny, with a high near 63.
Thursday Night
Mostly clear, with a low around 38.
Friday
Sunny, with a high near 58.
Friday Night
Patchy frost after 4am. Otherwise, clear, with a low around 34.
Saturday
Patchy frost before 9am. Otherwise, sunny, with a high near 59.
Saturday Night
Mostly clear, with a low around 36.
Sunday
Sunny, with a high near 65.
Sunday Night
Mostly clear, with a low around 41.
Monday
Mostly sunny, with a high near 65.
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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:
2:21 pm EDT Oct 19, 2026
Forecast Valid:
3pm EDT Oct 19, 2026-6pm EDT Oct 26, 2026
 
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