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

61°F

16°C

Humidity 87%
Wind Speed SW 3 mph
Barometer 30.00 in (1014.6 mb)
Dewpoint 57°F (14°C)
Visibility 10.00 mi
Last update 26 Jul 5:54 am EDT
Extended Forecast for

Cassandra PA

  • Today

    Today: Mostly sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 77 °F

    Mostly Sunny

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 20%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Slight Chance
    Showers

  • Monday

    Monday: Mostly sunny, with a high near 79. West wind 3 to 7 mph.

    High: 79 °F

    Mostly Sunny

  • Monday Night

    Monday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 64. South wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Chance
    T-storms then
    Showers

  • Tuesday

    Tuesday: Showers and possibly a thunderstorm. High near 74. Southwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 74 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. 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 72. Chance of precipitation is 60%.

    High: 72 °F

    Showers
    Likely

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 60%.

    Low: 57 °F

    Showers
    Likely then
    Partly Cloudy

  • Thursday

    Thursday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 77. Calm wind becoming west 5 to 7 mph in the afternoon.
Tonight
A slight chance of showers and thunderstorms before 11pm, then a slight chance of showers after 2am. Partly cloudy, with a low around 61. Light and variable wind. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 79. West wind 3 to 7 mph.
Monday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 2am. Low around 64. South wind 3 to 7 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers and possibly a thunderstorm. High near 74. Southwest wind 7 to 9 mph, with gusts as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. 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 72. Chance of precipitation is 60%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 60%.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Mostly clear, with a low around 58.
Friday
Mostly sunny, with a high near 75.
Friday Night
Partly cloudy, with a low around 61.
Saturday
A chance of showers. Partly sunny, with a high near 76. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Cassandra PA
 40.4°N 78.62°W (Elev. 2211 ft)
Last Update:
6:05 am EDT Jul 26, 2026
Forecast Valid:
6am 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