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.

Fair

60°F

16°C

Humidity 50%
Wind Speed NW 9 mph
Barometer 30.03 in (1017.0 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Last update 15 May 3:54 pm EDT
Extended Forecast for

Brownstown PA

  • Tonight

    Tonight: Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Northwest wind around 5 mph becoming calm in the evening.

    Low: 48 °F

    Decreasing
    Clouds

  • Saturday

    Saturday: A chance of showers, mainly after 5pm. Mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 81 °F

    Sunny then
    Chance
    Showers

  • Saturday Night

    Saturday Night: Showers likely, mainly between 8pm and midnight. Mostly cloudy, with a low around 59. West wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 59 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Light west wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 62. Calm wind.

    Low: 62 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 67.

    Low: 67 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: A chance of showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.

    Low: 66 °F

    Chance
    Showers

Detailed Forecast

Tonight
Mostly cloudy, then gradually becoming mostly clear, with a low around 48. Northwest wind around 5 mph becoming calm in the evening.
Saturday
A chance of showers, mainly after 5pm. Mostly sunny, with a high near 81. Light and variable wind becoming southwest 5 to 10 mph in the afternoon. Winds could gust as high as 21 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Showers likely, mainly between 8pm and midnight. Mostly cloudy, with a low around 59. West wind 3 to 5 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 82. Light west wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Mostly clear, with a low around 62. Calm wind.
Monday
Sunny, with a high near 91.
Monday Night
Mostly clear, with a low around 67.
Tuesday
Sunny, with a high near 90.
Tuesday Night
A chance of showers after 8pm. Mostly cloudy, with a low around 66. Chance of precipitation is 40%.
Wednesday
Showers, mainly after 2pm. High near 78. Chance of precipitation is 80%.
Wednesday Night
Showers. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 69.
Thursday Night
Partly cloudy, with a low around 50.
Friday
Mostly sunny, with a high near 73.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Brownstown PA
 40.34°N 78.92°W (Elev. 1388 ft)
Last Update:
2:21 pm EDT May 15, 2026
Forecast Valid:
4pm EDT May 15, 2026-6pm EDT May 22, 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