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.

Overcast

65°F

18°C

Humidity 87%
Wind Speed SW 6 mph
Barometer 30.20 in (1021.3 mb)
Dewpoint 61°F (16°C)
Visibility 10.00 mi
Last update 21 Jun 5:54 am EDT
Extended Forecast for

Johnstown PA

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

  • Today

    Today: Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 88 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 68. Light south wind.

    Low: 68 °F

    Mostly Clear

  • Sunday

    Sunday: Sunny, with a high near 91. West wind 6 to 8 mph, with gusts as high as 20 mph.

    High: 91 °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 and hot, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.

    High: 93 °F

    Hot

  • Monday Night

    Monday Night: Clear, with a low around 72.

    Low: 72 °F

    Clear

  • Tuesday

    Tuesday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 71.

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.

    High: 91 °F

    Sunny then
    Chance
    Showers

Detailed Forecast

Today
Mostly sunny, with a high near 88. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
Mostly clear, with a low around 68. Light south wind.
Sunday
Sunny, with a high near 91. West wind 6 to 8 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 and hot, with a high near 93. Calm wind becoming west around 6 mph in the afternoon.
Monday Night
Clear, with a low around 72.
Tuesday
Sunny and hot, with a high near 92.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
A chance of showers after 2pm. Mostly sunny, with a high near 91. Chance of precipitation is 40%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 71. Chance of precipitation is 30%.
Thursday
A chance of showers. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 71. Chance of precipitation is 40%.
Friday
A chance of showers. Mostly sunny, with a high near 87. Chance of precipitation is 50%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
3:59 am EDT Jun 21, 2025
Forecast Valid:
6am EDT Jun 21, 2025-6pm EDT Jun 27, 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