National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

82°F

28°C

Humidity 47%
Wind Speed SW 9 G 16 mph
Barometer 30.18 in (1020.4 mb)
Dewpoint 60°F (16°C)
Visibility 10.00 mi
Heat Index82°F (28°C)
Last update 21 Jun 3:54 pm EDT
Extended Forecast for

Cassandra PA

Heat Advisory June 22, 11:00am until June 25, 08:00pm
Click here for hazard details and duration
Heat Advisory

  • Tonight

    Tonight: Mostly clear, with a low around 68. Southwest wind 3 to 6 mph.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 89. West wind 7 to 10 mph, with gusts as high as 20 mph.

    High: 89 °F

    Sunny

  • Sunday Night

    Sunday Night: Mostly clear, with a low around 71. West wind 3 to 5 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91. West wind 3 to 6 mph.

    High: 91 °F

    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 72. Light west wind.

    Low: 72 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 90.

    High: 90 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 70.

    Low: 70 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.

    High: 88 °F

    Sunny then
    Chance
    T-storms

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.

    Low: 70 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Mostly clear, with a low around 68. Southwest wind 3 to 6 mph.
Sunday
Sunny, with a high near 89. West wind 7 to 10 mph, with gusts as high as 20 mph.
Sunday Night
Mostly clear, with a low around 71. West wind 3 to 5 mph.
Monday
Sunny, with a high near 91. West wind 3 to 6 mph.
Monday Night
Mostly clear, with a low around 72. Light west wind.
Tuesday
Sunny, with a high near 90.
Tuesday Night
Mostly clear, with a low around 70.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 88. Chance of precipitation is 40%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
A chance of showers after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 50%.
Thursday Night
A chance of showers. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Friday
Showers likely. Mostly sunny, with a high near 85. Chance of precipitation is 60%.
Friday Night
Showers likely. Mostly cloudy, with a low around 69. Chance of precipitation is 60%.
Saturday
Showers likely. Partly sunny, with a high near 83. Chance of precipitation is 60%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Cassandra PA
 40.4°N 78.65°W (Elev. 1699 ft)
Last Update:
2:10 pm EDT Jun 21, 2025
Forecast Valid:
4pm EDT Jun 21, 2025-6pm EDT Jun 28, 2025
 
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