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

Hawaii and Guam Concerns; Record Warmth Spreads Eastward; Heavy Snow for Sierra-Nevada; Severe Weather for the Plains

A very active spring pattern with tropical concerns across the Pacific. Heavy rainfall will continue to impact Hawaii this weekend. Meanwhile we continue to monitor a developing typhoon that may affect Guam into early next week. For the Lower 48, heavy snow for mountains of California this weekend, increase threat for severe thunderstorms next week for the Plains and record warmth spreads east. Read More >

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

55°F

13°C

Humidity 37%
Wind Speed NW 12 G 21 mph
Barometer 30.32 in (1027.4 mb)
Dewpoint 29°F (-2°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 11 Apr 4:54 pm EDT
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: Mostly clear, with a low around 39. Light and variable wind.

    Low: 39 °F

    Mostly Clear

  • Sunday

    Sunday: Mostly sunny, with a high near 72. Southeast wind around 7 mph.

    High: 72 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59. South wind around 6 mph.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 75. Southwest wind 7 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.

    High: 75 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 60. West wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 80. Chance of precipitation is 30%.

    High: 80 °F

    Chance
    Showers then
    Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.

    Low: 63 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.

    High: 84 °F

    Partly Sunny
    then Chance
    Showers

  • Wednesday Night

    Wednesday Night: A chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.

    Low: 64 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly clear, with a low around 39. Light and variable wind.
Sunday
Mostly sunny, with a high near 72. Southeast wind around 7 mph.
Sunday Night
Mostly cloudy, with a low around 59. South wind around 6 mph.
Monday
A chance of showers. Mostly cloudy, with a high near 75. Southwest wind 7 to 14 mph, with gusts as high as 31 mph. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch possible.
Monday Night
A chance of showers before 11pm, then a chance of showers and thunderstorms between 11pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 60. West wind around 7 mph, with gusts as high as 21 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 80. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 2am. Mostly cloudy, with a low around 64. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 40%.
Thursday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 50%.
Friday
A chance of showers. Partly sunny, with a high near 77. Chance of precipitation is 30%.
Friday Night
Mostly cloudy, with a low around 57.
Saturday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 50%.
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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 Apr 11, 2026
Forecast Valid:
5pm EDT Apr 11, 2026-6pm EDT Apr 18, 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