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

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Overcast

63°F

17°C

Humidity 90%
Wind Speed SE 7 mph
Barometer 30.18 in (1021.2 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Last update 19 Aug 8:54 am EDT
Extended Forecast for

Brownstown PA

  • Today

    Today: Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 78. Southeast wind 6 to 9 mph.

    High: 78 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 63. South wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 63 °F

    Partly Cloudy
    then Chance
    T-storms

  • Wednesday

    Wednesday: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 81 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 62 °F

    Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers. Mostly cloudy, with a high near 77. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 77 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: Partly cloudy, with a low around 57.

    Low: 57 °F

    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 82.

    High: 82 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 60.

    Low: 60 °F

    Mostly Clear

  • Saturday

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

    High: 84 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Patchy fog before 10am. Otherwise, cloudy early, then gradual clearing, with a high near 78. Southeast wind 6 to 9 mph.
Tonight
A chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 63. South wind 5 to 7 mph, with gusts as high as 20 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 8am. Mostly cloudy, with a high near 81. South wind around 5 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 62. Calm wind. Chance of precipitation is 50%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers. Mostly cloudy, with a high near 77. Calm wind becoming east around 6 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
Partly cloudy, with a low around 57.
Friday
Sunny, with a high near 82.
Friday Night
Mostly clear, with a low around 60.
Saturday
A chance of showers after 2pm. Mostly sunny, with a high near 84. Chance of precipitation is 30%.
Saturday Night
A chance of showers before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 62. Chance of precipitation is 40%.
Sunday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 50%.
Sunday Night
Partly cloudy, with a low around 55.
Monday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
Brownstown PA
 40.34°N 78.92°W (Elev. 1388 ft)
Last Update:
3:35 am EDT Aug 19, 2025
Forecast Valid:
9am EDT Aug 19, 2025-6pm EDT Aug 25, 2025
 
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