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.

Partly Cloudy

71°F

22°C

Humidity 63%
Wind Speed Vrbl 5 mph
Barometer 30.00 in (1014.7 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 26 Jul 11:54 am EDT
Extended Forecast for

Johnstown PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 81. Northwest wind around 6 mph.

    High: 81 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Mostly Clear

  • Monday

    Monday: A slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Sunny
    then Slight
    Chance
    Showers

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 65. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 65 °F

    Chance
    T-storms then
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 78. Southwest wind 3 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    High: 78 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely

  • Wednesday

    Wednesday: A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.

    High: 76 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Showers
    Likely then
    Chance
    Showers

  • Thursday

    Thursday: A chance of showers after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 30%.

    High: 76 °F

    Mostly Sunny
    then Chance
    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 81. Northwest wind around 6 mph.
Tonight
A slight chance of showers and thunderstorms before 9pm. Partly cloudy, with a low around 61. Calm wind. Chance of precipitation is 20%.
Monday
A slight chance of showers between 1pm and 2pm. Mostly sunny, with a high near 83. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 20%.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 65. Light south wind. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
Showers and possibly a thunderstorm. High near 78. Southwest wind 3 to 7 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 70%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Mostly cloudy, with a high near 76. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers between 8pm and 2am. Partly cloudy, with a low around 58. Chance of precipitation is 60%.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 76. Chance of precipitation is 30%.
Thursday Night
A chance of showers before 8pm. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 79.
Friday Night
Partly cloudy, with a low around 61.
Saturday
A chance of showers. Partly sunny, with a high near 80. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
8:05 am EDT Jul 26, 2026
Forecast Valid:
12pm EDT Jul 26, 2026-6pm EDT Aug 1, 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