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.

Mostly Cloudy

71°F

22°C

Humidity 73%
Wind Speed E 7 mph
Barometer 30.15 in (1019.6 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 4 Aug 8:54 pm EDT
Extended Forecast for

2 Miles NW Brownstown PA

  • Tonight

    Tonight: Partly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening.

    Low: 64 °F

    Partly Cloudy

  • Wednesday

    Wednesday: A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Slight Chance
    Showers then
    Heavy Rain

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm, then a slight chance of showers. Some of the storms could produce heavy rainfall. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Light south wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 67 °F

    Heavy Rain
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 9am. High near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Heavy Rain
    and Patchy
    Fog then
    Heavy Rain

  • Thursday Night

    Thursday Night: Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 69. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 69 °F

    Heavy Rain
    then Chance
    Showers

  • Friday

    Friday: Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 83. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Heavy Rain

  • Friday Night

    Friday Night: Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Some of the storms could produce heavy rainfall. Low around 66. Chance of precipitation is 80%.

    Low: 66 °F

    Heavy Rain
    then Chance
    T-storms

  • Saturday

    Saturday: Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.

    High: 82 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.

    Low: 65 °F

    Showers
    Likely

Detailed Forecast

Tonight
Partly cloudy, with a low around 64. East wind around 5 mph becoming calm in the evening.
Wednesday
A slight chance of showers between 10am and noon, then a chance of showers and thunderstorms after noon. Some of the storms could produce heavy rainfall. Mostly cloudy, with a high near 84. Calm wind becoming southeast around 5 mph in the afternoon. Chance of precipitation is 40%. 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 8pm, then a slight chance of showers. Some of the storms could produce heavy rainfall. Patchy fog after 3am. Otherwise, mostly cloudy, with a low around 67. Light south wind. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers and possibly a thunderstorm after 2pm. Some of the storms could produce heavy rainfall. Patchy fog before 9am. High near 84. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms before 11pm, then a chance of showers between 11pm and 2am. Some of the storms could produce heavy rainfall. Low around 69. Calm wind. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely, then showers and possibly a thunderstorm after 11am. Some of the storms could produce heavy rainfall. High near 83. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Some of the storms could produce heavy rainfall. Low around 66. Chance of precipitation is 80%.
Saturday
Showers likely and possibly a thunderstorm, mainly after 2pm. Mostly cloudy, with a high near 82. Chance of precipitation is 70%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Mostly cloudy, with a low around 65. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 66. Chance of precipitation is 30%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 85. Chance of precipitation is 50%.
Monday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Tuesday
Showers and possibly a thunderstorm. High near 82. Chance of precipitation is 80%.
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ABOUT THIS FORECAST

 
Point Forecast:
2 Miles NW Brownstown PA
 40.34°N 78.95°W (Elev. 1302 ft)
Last Update:
8:11 pm EDT Aug 4, 2026
Forecast Valid:
9pm EDT Aug 4, 2026-6pm EDT Aug 11, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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