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

84°F

29°C

Humidity 61%
Wind Speed W 13 G 23 mph
Barometer 30.23 in (1021.8 mb)
Dewpoint 69°F (21°C)
Visibility 10.00 mi
Heat Index88°F (31°C)
Last update 22 Jun 12:54 pm EDT
Extended Forecast for

Portage PA

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

    NOW until 8:00pm Wed

    Heat Advisory

  • This Afternoon

    High: 89 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 71. Southwest wind 3 to 5 mph.

    Low: 71 °F

    Mostly Clear

  • Monday

    Monday: Sunny, with a high near 91. West wind 3 to 7 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 91. West wind 3 to 8 mph.

    High: 91 °F

    Sunny

  • Tuesday Night

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

    Low: 71 °F

    Mostly Clear

  • Wednesday

    Wednesday: A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 50%.

    High: 89 °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

This Afternoon
Sunny, with a high near 89. West wind around 10 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 71. Southwest wind 3 to 5 mph.
Monday
Sunny, with a high near 91. West wind 3 to 7 mph.
Monday Night
Mostly clear, with a low around 72. Light west wind.
Tuesday
Sunny, with a high near 91. West wind 3 to 8 mph.
Tuesday Night
Mostly clear, with a low around 71.
Wednesday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 89. Chance of precipitation is 50%.
Wednesday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 70. Chance of precipitation is 30%.
Thursday
Showers likely, mainly after 2pm. Mostly sunny, with a high near 86. Chance of precipitation is 60%.
Thursday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Mostly cloudy, with a low around 70. Chance of precipitation is 60%.
Friday
Showers likely. Partly sunny, with a high near 84. 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 81. Chance of precipitation is 60%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.39°N 78.68°W (Elev. 1621 ft)
Last Update:
12:57 pm EDT Jun 22, 2025
Forecast Valid:
1pm EDT Jun 22, 2025-6pm EDT Jun 28, 2025
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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