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.

Overcast

46°F

8°C

Humidity 47%
Wind Speed SW 8 mph
Barometer 29.90 in (1012.9 mb)
Dewpoint 27°F (-3°C)
Visibility 10.00 mi
Wind Chill42°F (6°C)
Last update 4 May 4:54 am EDT
Extended Forecast for

Portage PA

  • Today

    Today: Mostly cloudy, then gradually becoming sunny, with a high near 68. Southwest wind 6 to 13 mph, with gusts as high as 25 mph.

    High: 68 °F

    Decreasing
    Clouds

  • Tonight

    Tonight: A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 4am. Partly cloudy, with a low around 56. Southwest wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    Showers

  • Tuesday

    Tuesday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Southwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms, then showers after 8pm. Low around 55. Southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 55 °F

    Chance
    Showers then
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. High near 62. South wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 62 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely, mainly before 8pm. Mostly cloudy, with a low around 42. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 42 °F

    Showers
    Likely

  • Thursday

    Thursday: Showers likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.

    High: 54 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of showers before 2am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.

    Low: 37 °F

    Chance
    Showers

  • Friday

    Friday: Mostly sunny, with a high near 56.

    High: 56 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly cloudy, then gradually becoming sunny, with a high near 68. Southwest wind 6 to 13 mph, with gusts as high as 25 mph.
Tonight
A chance of showers and thunderstorms before 2am, then a chance of showers between 2am and 4am. Partly cloudy, with a low around 56. Southwest wind around 8 mph, with gusts as high as 21 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 74. Southwest wind 11 to 15 mph, with gusts as high as 28 mph. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers and thunderstorms, then showers after 8pm. Low around 55. Southwest wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Wednesday
Showers, with thunderstorms also possible after 2pm. High near 62. South wind 7 to 10 mph becoming west in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Showers likely, mainly before 8pm. Mostly cloudy, with a low around 42. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Thursday
Showers likely. Mostly cloudy, with a high near 54. Chance of precipitation is 60%.
Thursday Night
A chance of showers before 2am. Mostly cloudy, with a low around 37. Chance of precipitation is 30%.
Friday
Mostly sunny, with a high near 56.
Friday Night
A chance of showers after 2am. Partly cloudy, with a low around 43. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 60. Chance of precipitation is 50%.
Saturday Night
A chance of showers. Partly cloudy, with a low around 41. Chance of precipitation is 30%.
Sunday
A chance of showers. Mostly sunny, with a high near 63. Chance of precipitation is 30%.
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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:
3:46 am EDT May 4, 2026
Forecast Valid:
5am EDT May 4, 2026-6pm EDT May 10, 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