Notice of NWS' New Version of Forecast
A new version of Forecast is coming soon!
Click here to visit the new site for details.

Severe Thunderstorms & Heavy Rain in the Plains/Midwest; Clouds and Rain Threaten Eclipse Viewing for Some

While much of the nation observes today's eclipse, clouds threaten to obscure the view in parts of the Plains, Midwest, Mid-Atlantic, Southwest, and Southeast states. The weather could be more than just a nuisance in the north-central Plains and Midwest where scattered severe storms are possible this afternoon and evening. Very large hail, damaging wind gusts, and flash floods are possible. Read More >

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

79°F

26°C

Humidity 65%
Wind Speed W 9 mph
Barometer 30.19 in (1020.8 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index81°F (27°C)
Last update 21 Aug 5:54 pm EDT
Extended Forecast for

Johnstown PA

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am.  Partly cloudy, with a low around 67. South wind around 6 mph.  Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Chance
    T-storms

    Low: 67 °F

  • Tuesday

    Tuesday: Showers and thunderstorms likely, mainly after 5pm.  Mostly sunny, with a high near 85. Southwest wind 6 to 13 mph.  Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Slight Chance
    T-storms then
    T-storms
    Likely

    High: 85 °F

  • Tuesday
    Night

    Tuesday Night: Showers and thunderstorms before 2am, then a chance of showers. Some of the storms could produce gusty winds and frequent lightning.  Low around 63. Southwest wind 8 to 10 mph.  Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    T-storms then
    Chance
    Showers

    Low: 63 °F

  • Wednesday

    Wednesday: Partly sunny, with a high near 74. Northwest wind 6 to 8 mph.

    Partly Sunny

    High: 74 °F

  • Wednesday
    Night

    Wednesday Night: Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm  in the evening.

    Mostly Clear

    Low: 54 °F

  • Thursday

    Thursday: Sunny, with a high near 72.

    Sunny

    High: 72 °F

  • Thursday
    Night

    Thursday Night: Mostly clear, with a low around 52.

    Mostly Clear

    Low: 52 °F

  • Friday

    Friday: Sunny, with a high near 72.

    Sunny

    High: 72 °F

  • Friday
    Night

    Friday Night: Mostly clear, with a low around 49.

    Mostly Clear

    Low: 49 °F

Detailed Forecast

Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers and thunderstorms after 2am. Partly cloudy, with a low around 67. South wind around 6 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and thunderstorms likely, mainly after 5pm. Mostly sunny, with a high near 85. Southwest wind 6 to 13 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms before 2am, then a chance of showers. Some of the storms could produce gusty winds and frequent lightning. Low around 63. Southwest wind 8 to 10 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
Partly sunny, with a high near 74. Northwest wind 6 to 8 mph.
Wednesday Night
Mostly clear, with a low around 54. Northwest wind around 5 mph becoming calm in the evening.
Thursday
Sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 52.
Friday
Sunny, with a high near 72.
Friday Night
Mostly clear, with a low around 49.
Saturday
Sunny, with a high near 74.
Saturday Night
Mostly clear, with a low around 53.
Sunday
Mostly sunny, with a high near 75.
Sunday Night
Partly cloudy, with a low around 56.
Monday
Partly sunny, with a high near 72.
Click Map For Forecast
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
3:44 pm EDT Aug 21, 2017
6pm EDT Aug 21, 2017-6pm EDT Aug 28, 2017
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

Hourly Weather Forecast

National Digital Forecast Database