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.

Fog/Mist

65°F

18°C

Humidity 100%
Wind Speed W 6 mph
Barometer 29.82 in (1008.2 mb)
Dewpoint 65°F (18°C)
Visibility 5.00 mi
Last update 3 Aug 4:54 am EDT
Extended Forecast for

Brownstown PA

  • Overnight

    Overnight: A slight chance of showers. Mostly cloudy, with a low around 65. Light southwest wind. Chance of precipitation is 20%.

    Low: 65 °F

    Slight Chance
    Showers

  • Monday

    Monday: Cloudy, then gradually becoming mostly sunny, with a high near 79. Northwest wind 5 to 8 mph.

    High: 79 °F

    Decreasing
    Clouds

  • Monday Night

    Monday Night: Patchy fog after 1am. Otherwise, mostly clear, with a low around 57. Light and variable wind.

    Low: 57 °F

    Mostly Clear
    then Patchy
    Fog

  • Tuesday

    Tuesday: Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light southeast wind.

    High: 83 °F

    Patchy Fog
    then Mostly
    Sunny

  • Tuesday Night

    Tuesday Night: Partly cloudy, with a low around 64. Light southeast wind.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Chance of precipitation is 30%.

    Low: 67 °F

    Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers and possibly a thunderstorm, mainly after 2pm. Patchy fog before 8am. High near 85. Chance of precipitation is 80%.

    High: 85 °F

    Chance
    Showers and
    Patchy Fog
    then Showers

  • Thursday Night

    Thursday Night: Showers and possibly a thunderstorm before 8pm. Low around 67. Chance of precipitation is 80%.

    Low: 67 °F

    Showers then
    Partly Cloudy

Detailed Forecast

Overnight
A slight chance of showers. Mostly cloudy, with a low around 65. Light southwest wind. Chance of precipitation is 20%.
Monday
Cloudy, then gradually becoming mostly sunny, with a high near 79. Northwest wind 5 to 8 mph.
Monday Night
Patchy fog after 1am. Otherwise, mostly clear, with a low around 57. Light and variable wind.
Tuesday
Patchy fog before 9am. Otherwise, sunny, with a high near 83. Light southeast wind.
Tuesday Night
Partly cloudy, with a low around 64. Light southeast wind.
Wednesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Wednesday Night
A chance of showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Chance of precipitation is 30%.
Thursday
Showers and possibly a thunderstorm, mainly after 2pm. Patchy fog before 8am. High near 85. Chance of precipitation is 80%.
Thursday Night
Showers and possibly a thunderstorm before 8pm. Low around 67. Chance of precipitation is 80%.
Friday
Showers likely and possibly a thunderstorm, mainly after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 66. Chance of precipitation is 60%.
Saturday
A chance of showers and thunderstorms. Partly sunny, with a high near 83. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Brownstown PA
 40.34°N 78.95°W (Elev. 1302 ft)
Last Update:
2:21 am EDT Aug 3, 2026
Forecast Valid:
5am EDT Aug 3, 2026-6pm EDT Aug 9, 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