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

66°F

19°C

Humidity 63%
Wind Speed N 13 G 21 mph
Barometer 30.03 in (1016.3 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 23 Jun 12:54 pm EDT
Extended Forecast for

Portage PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 70. North wind around 11 mph, with gusts as high as 20 mph.

    High: 70 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 51. North wind 8 to 10 mph, with gusts as high as 22 mph.

    Low: 51 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 72. Northwest wind 5 to 8 mph.

    High: 72 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.

    Low: 56 °F

    Partly Cloudy

  • Thursday

    Thursday: A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. Light south wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Thursday Night

    Thursday Night: A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms then
    Showers
    Likely

  • Friday

    Friday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.

    High: 74 °F

    Showers
    Likely

  • Friday Night

    Friday Night: Showers likely and possibly a thunderstorm, then showers after 2am. Low around 62. Chance of precipitation is 80%.

    Low: 62 °F

    Showers

  • Saturday

    Saturday: Showers, with thunderstorms also possible after 2pm. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 70. North wind around 11 mph, with gusts as high as 20 mph.
Tonight
Mostly clear, with a low around 51. North wind 8 to 10 mph, with gusts as high as 22 mph.
Wednesday
Sunny, with a high near 72. Northwest wind 5 to 8 mph.
Wednesday Night
Partly cloudy, with a low around 56. West wind around 5 mph becoming calm in the evening.
Thursday
A slight chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 76. Light south wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 20%.
Thursday Night
A chance of showers and thunderstorms, then showers likely and possibly a thunderstorm after 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 74. Chance of precipitation is 70%.
Friday Night
Showers likely and possibly a thunderstorm, then showers after 2am. Low around 62. Chance of precipitation is 80%.
Saturday
Showers, with thunderstorms also possible after 2pm. High near 74. Chance of precipitation is 80%.
Saturday Night
A chance of thunderstorms before 8pm. Partly cloudy, with a low around 61. Chance of precipitation is 30%.
Sunday
Mostly sunny, with a high near 79.
Sunday Night
Partly cloudy, with a low around 64.
Monday
Mostly sunny, with a high near 82.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.36°N 78.66°W (Elev. 2103 ft)
Last Update:
12:03 pm EDT Jun 23, 2026
Forecast Valid:
1pm EDT Jun 23, 2026-6pm EDT Jun 29, 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