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

67°F

19°C

Humidity 66%
Wind Speed NW 3 mph
Barometer 30.02 in (1015.2 mb)
Dewpoint 55°F (13°C)
Visibility 10.00 mi
Last update 18 Aug 9:54 pm EDT
Extended Forecast for

4 Miles W Sproul PA

  • Tonight

    Tonight: Mostly clear, with a low around 57. Light west wind.

    Low: 57 °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: A chance of showers and thunderstorms between midnight and 2am, then a slight chance of showers. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Light north wind. Chance of precipitation is 60%. 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: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 56. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Showers
    Likely then
    Mostly Cloudy

  • Friday

    Friday: A slight chance of showers after 2pm. Mostly sunny, with a high near 72. Chance of precipitation is 20%.

    High: 72 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Friday Night

    Friday Night: A chance of showers after 2am. Partly cloudy, with a low around 59. Chance of precipitation is 30%.

    Low: 59 °F

    Partly Cloudy
    then Chance
    Showers

  • Saturday

    Saturday: A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 60%.

    High: 72 °F

    Chance
    Showers then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.

    Low: 59 °F

    Showers
    Likely then
    Chance
    T-storms

Detailed Forecast

Tonight
Mostly clear, with a low around 57. Light west wind.
Wednesday
Mostly sunny, with a high near 75. West wind 5 to 9 mph.
Wednesday Night
A chance of showers and thunderstorms between midnight and 2am, then a slight chance of showers. Mostly cloudy, with a low around 61. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 71. Light north wind. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 56. Calm wind. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
A slight chance of showers after 2pm. Mostly sunny, with a high near 72. Chance of precipitation is 20%.
Friday Night
A chance of showers after 2am. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Saturday
A chance of showers before 8am, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 72. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 59. Chance of precipitation is 60%.
Sunday
A chance of showers between 8am and 2pm, then a chance of showers and thunderstorms after 2pm. 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 70.
Monday Night
Partly cloudy, with a low around 56.
Tuesday
Mostly sunny, with a high near 72.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Sproul PA
 40.31°N 78.58°W (Elev. 2372 ft)
Last Update:
8:11 pm EDT Aug 18, 2026
Forecast Valid:
10pm EDT Aug 18, 2026-6pm EDT Aug 25, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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