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

64°F

18°C

Humidity 93%
Wind Speed NW 3 mph
Barometer 29.98 in (1014.0 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 18 Aug 4:54 am EDT
Extended Forecast for

4 Miles W Sproul PA

  • Today

    Today: Mostly sunny, with a high near 73. Northwest wind 3 to 8 mph.

    High: 73 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm in the evening.

    Low: 58 °F

    Mostly Clear

  • Wednesday

    Wednesday: Mostly sunny, with a high near 75. West wind 5 to 9 mph.

    High: 75 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Showers likely, mainly after 2am. Mostly cloudy, with a low around 61. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 61 °F

    Slight Chance
    Showers then
    Showers
    Likely

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 71. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.

    Low: 57 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Friday

    Friday: A chance of showers after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.

    High: 72 °F

    Partly Sunny
    then Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Chance
    Showers then
    Partly Cloudy

  • Saturday

    Saturday: Showers likely after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 60%.

    High: 72 °F

    Partly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Mostly sunny, with a high near 73. Northwest wind 3 to 8 mph.
Tonight
Mostly clear, with a low around 58. Northwest wind around 5 mph becoming calm in the evening.
Wednesday
Mostly sunny, with a high near 75. West wind 5 to 9 mph.
Wednesday Night
Showers likely, mainly after 2am. Mostly cloudy, with a low around 61. West wind around 6 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 71. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
A slight chance of showers and thunderstorms. Mostly cloudy, with a low around 57. Chance of precipitation is 20%.
Friday
A chance of showers after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 30%.
Friday Night
A chance of showers before 8pm. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Saturday
Showers likely after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 60%.
Saturday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 70. Chance of precipitation is 40%.
Sunday Night
A chance of thunderstorms. Partly cloudy, with a low around 55. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 69.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Sproul PA
 40.31°N 78.58°W (Elev. 2372 ft)
Last Update:
4:57 am EDT Aug 18, 2026
Forecast Valid:
5am EDT Aug 18, 2026-6pm EDT Aug 24, 2026
 
Forecast Discussion
 
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Additional Resources

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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