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.

Fair

61°F

16°C

Humidity 78%
Wind Speed SE 5 mph
Barometer 30.13 in (1019.2 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 25 Jul 3:54 am EDT
Extended Forecast for

3 Miles SE Portage PA

  • Today

    Today: Partly sunny, with a high near 74. Southeast wind 7 to 9 mph.

    High: 74 °F

    Partly Sunny

  • Tonight

    Tonight: A slight chance of showers before 10pm. Partly cloudy, with a low around 59. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.

    Low: 59 °F

    Slight Chance
    Showers then
    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms between 2pm and 4pm. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 76 °F

    Mostly Sunny
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Partly cloudy, with a low around 61. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.

    Low: 61 °F

    Slight Chance
    T-storms then
    Chance
    Showers

  • Monday

    Monday: A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 77. West wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers then
    Showers
    Likely

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 64 °F

    Showers

  • Tuesday

    Tuesday: Showers, with thunderstorms also possible after 8am. High near 74. Chance of precipitation is 80%.

    High: 74 °F

    Showers

  • Tuesday Night

    Tuesday Night: Showers, mainly before 8pm. Low around 60. Chance of precipitation is 80%.

    Low: 60 °F

    Showers then
    Chance
    Showers

  • Wednesday

    Wednesday: A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%.

    High: 70 °F

    Partly Sunny
    then Chance
    Showers

Detailed Forecast

Today
Partly sunny, with a high near 74. Southeast wind 7 to 9 mph.
Tonight
A slight chance of showers before 10pm. Partly cloudy, with a low around 59. Southeast wind 3 to 5 mph. Chance of precipitation is 20%.
Sunday
A slight chance of showers and thunderstorms between 2pm and 4pm. Mostly sunny, with a high near 76. Calm wind becoming west 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
A slight chance of showers and thunderstorms between 8pm and 2am, then a chance of showers after 2am. Partly cloudy, with a low around 61. Southwest wind 3 to 5 mph. Chance of precipitation is 30%.
Monday
A chance of showers before 11am, then a chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 77. West wind 5 to 8 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
Showers and possibly a thunderstorm. Low around 64. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday
Showers, with thunderstorms also possible after 8am. High near 74. Chance of precipitation is 80%.
Tuesday Night
Showers, mainly before 8pm. Low around 60. Chance of precipitation is 80%.
Wednesday
A chance of showers after 2pm. Partly sunny, with a high near 70. Chance of precipitation is 30%.
Wednesday Night
A chance of showers before 8pm. Partly cloudy, with a low around 57. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 72.
Thursday Night
Partly cloudy, with a low around 58.
Friday
Mostly sunny, with a high near 75.
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ABOUT THIS FORECAST

 
Point Forecast:
3 Miles SE Portage PA
 40.36°N 78.63°W (Elev. 2326 ft)
Last Update:
3:11 am EDT Jul 25, 2026
Forecast Valid:
4am EDT Jul 25, 2026-6pm EDT Jul 31, 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