National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

62°F

17°C

Humidity 84%
Wind Speed SW 6 mph
Barometer 29.98 in (1014.1 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 15 Apr 4:54 am EDT
Extended Forecast for

Johnstown PA

  • Overnight

    Overnight: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind around 6 mph. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 9am. Mostly sunny, with a high near 83. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe. Mostly cloudy, with a low around 64. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 64 °F

    Severe
    Thunderstorms
    then Slight
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Partly sunny, with a high near 82. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 82 °F

    Partly Sunny
    then Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 59. West wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Showers
    Likely

  • Friday

    Friday: A chance of showers, mainly before 2pm. Partly sunny, with a high near 74. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.

    High: 74 °F

    Chance
    Showers

  • Friday Night

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

    Low: 54 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.

    High: 82 °F

    Mostly Sunny
    then Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.

    Low: 46 °F

    Showers
    Likely

Detailed Forecast

Overnight
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 61. South wind around 6 mph. Chance of precipitation is 20%.
Wednesday
A chance of showers and thunderstorms before 8am, then a chance of showers between 8am and 9am. Mostly sunny, with a high near 83. West wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before midnight, then a slight chance of showers between midnight and 1am. Some of the storms could be severe. Mostly cloudy, with a low around 64. Light southwest wind. Chance of precipitation is 30%. New precipitation amounts between a quarter and half of an inch possible.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 82. Southwest wind 6 to 13 mph, with gusts as high as 24 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers and thunderstorms before 8pm, then showers likely and possibly a thunderstorm between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 59. West wind 5 to 7 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A chance of showers, mainly before 2pm. Partly sunny, with a high near 74. Chance of precipitation is 40%. New precipitation amounts of less than a tenth of an inch possible.
Friday Night
Partly cloudy, with a low around 54.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 82. Chance of precipitation is 40%.
Saturday Night
Showers likely, mainly between 8pm and 2am. Mostly cloudy, with a low around 46. Chance of precipitation is 60%.
Sunday
A chance of showers. Mostly cloudy, with a high near 60. Chance of precipitation is 50%.
Sunday Night
A chance of rain and snow showers. Mostly cloudy, with a low around 31. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 49.
Monday Night
Mostly clear, with a low around 30.
Tuesday
Sunny, with a high near 66.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
2:21 am EDT Apr 15, 2026
Forecast Valid:
5am EDT Apr 15, 2026-6pm EDT Apr 21, 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