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 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

68°F

20°C

Humidity 33%
Wind Speed W 16 G 33 mph
Barometer 30.24 in (1023.5 mb)
Dewpoint 38°F (3°C)
Visibility 10.00 mi
Last update 10 Apr 11:54 am EDT
Extended Forecast for

Johnstown PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.

    High: 74 °F

    Mostly Sunny

  • Tonight

    Tonight: Showers likely, mainly before midnight. Mostly cloudy, with a low around 43. West wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 43 °F

    Showers
    Likely then
    Slight Chance
    Showers

  • Saturday

    Saturday: Mostly cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind 3 to 6 mph.

    High: 60 °F

    Becoming
    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 40. Calm wind.

    Low: 40 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 74. South wind around 7 mph.

    High: 74 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

  • Monday

    Monday: A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.

    High: 73 °F

    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 40%.

    High: 79 °F

    Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 74. Southwest wind 9 to 11 mph, with gusts as high as 22 mph.
Tonight
Showers likely, mainly before midnight. Mostly cloudy, with a low around 43. West wind 5 to 7 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly cloudy through mid morning, then gradual clearing, with a high near 60. Northwest wind 3 to 6 mph.
Saturday Night
Mostly clear, with a low around 40. Calm wind.
Sunday
Partly sunny, with a high near 74. South wind around 7 mph.
Sunday Night
Mostly cloudy, with a low around 59.
Monday
A chance of showers. Mostly cloudy, with a high near 73. Chance of precipitation is 40%.
Monday Night
A chance of showers. Mostly cloudy, with a low around 59. Chance of precipitation is 30%.
Tuesday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 40%.
Tuesday Night
A chance of showers. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 83. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 60. Chance of precipitation is 30%.
Thursday
Partly sunny, with a high near 78.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
10:07 am EDT Apr 10, 2026
Forecast Valid:
12pm EDT Apr 10, 2026-6pm EDT Apr 16, 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