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

Areas of Severe Thunderstorms, Excessive Rainfall, and Extreme Heat Saturday

Severe thunderstorms capable of damaging winds will be possible from the Ozark Plateau east into the Tennessee Valley Saturday. Rounds of heavy thunderstorms ahead of a slow moving front will continue locally heavy rainfall and scattered flash flooding potential from the Ozarks to the Ohio and Tennessee Valleys Saturday. Extreme heat will continue for the Intermountain West and Plains. Read More >

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Overcast

66°F

19°C

Humidity 96%
Wind Speed SW 6 mph
Barometer 30.00 in (1014.5 mb)
Dewpoint 65°F (18°C)
Visibility 7.00 mi
Last update 11 Jul 2:54 am EDT
Extended Forecast for

Geistown PA

  • Overnight

    Overnight: A chance of showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.

    Low: 64 °F

    Chance
    Showers and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Patchy Fog
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Light east wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Chance
    T-storms then
    Mostly Cloudy

  • Sunday

    Sunday: Mostly sunny, with a high near 80. Southeast wind 3 to 7 mph.

    High: 80 °F

    Mostly Sunny

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 61. Southeast wind 3 to 6 mph.

    Low: 61 °F

    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 80.

    High: 80 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 62.

    Low: 62 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 85.

    High: 85 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

Detailed Forecast

Overnight
A chance of showers and thunderstorms. Patchy fog. Otherwise, mostly cloudy, with a low around 64. Calm wind. Chance of precipitation is 40%.
Saturday
A chance of showers and thunderstorms, mainly after 2pm. Patchy fog before 8am. Otherwise, mostly cloudy, with a high near 78. Calm wind becoming north around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Cloudy, then gradually becoming partly cloudy, with a low around 60. Light east wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Mostly sunny, with a high near 80. Southeast wind 3 to 7 mph.
Sunday Night
Partly cloudy, with a low around 61. Southeast wind 3 to 6 mph.
Monday
Mostly sunny, with a high near 80.
Monday Night
Mostly clear, with a low around 62.
Tuesday
Sunny, with a high near 85.
Tuesday Night
Mostly clear, with a low around 66.
Wednesday
Sunny, with a high near 89.
Wednesday Night
Partly cloudy, with a low around 66.
Thursday
Mostly sunny, with a high near 84.
Thursday Night
Partly cloudy, with a low around 63.
Friday
Mostly sunny, with a high near 82.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Geistown PA
 40.29°N 78.87°W (Elev. 1896 ft)
Last Update:
2:21 am EDT Jul 11, 2026
Forecast Valid:
3am EDT Jul 11, 2026-6pm EDT Jul 17, 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