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

33°F

1°C

Humidity 58%
Wind Speed E 3 mph
Barometer 30.26 in (1026.5 mb)
Dewpoint 20°F (-7°C)
Visibility 10.00 mi
Last update 25 Mar 2:54 am EDT
Extended Forecast for

Portage PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 33. Calm wind.

    Low: 33 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly cloudy, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning.

    High: 55 °F

    Mostly Cloudy

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 46. South wind around 8 mph.

    Low: 46 °F

    Mostly Cloudy

  • Thursday

    Thursday: A chance of rain, mainly after 2pm. Mostly cloudy, with a high near 68. Southwest wind 9 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.

    High: 68 °F

    Chance Rain

  • Thursday Night

    Thursday Night: Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 41. Southwest wind 11 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 41 °F

    Rain

  • Friday

    Friday: A chance of rain before 2pm. Mostly cloudy, with a high near 47. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 47 °F

    Chance Rain

  • Friday Night

    Friday Night: Partly cloudy, with a low around 23.

    Low: 23 °F

    Partly Cloudy

  • Saturday

    Saturday: Sunny, with a high near 41.

    High: 41 °F

    Sunny

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 28.

    Low: 28 °F

    Mostly Clear

Detailed Forecast

Overnight
Mostly cloudy, with a low around 33. Calm wind.
Wednesday
Mostly cloudy, with a high near 55. Calm wind becoming south 5 to 9 mph in the morning.
Wednesday Night
Mostly cloudy, with a low around 46. South wind around 8 mph.
Thursday
A chance of rain, mainly after 2pm. Mostly cloudy, with a high near 68. Southwest wind 9 to 14 mph, with gusts as high as 29 mph. Chance of precipitation is 40%.
Thursday Night
Rain before 11pm, then rain and possibly a thunderstorm between 11pm and 2am, then rain after 2am. Low around 41. Southwest wind 11 to 13 mph, with gusts as high as 32 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Friday
A chance of rain before 2pm. Mostly cloudy, with a high near 47. Chance of precipitation is 40%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Partly cloudy, with a low around 23.
Saturday
Sunny, with a high near 41.
Saturday Night
Mostly clear, with a low around 28.
Sunday
Mostly sunny, with a high near 51.
Sunday Night
Partly cloudy, with a low around 37.
Monday
Partly sunny, with a high near 56.
Monday Night
A chance of rain. Mostly cloudy, with a low around 47. Chance of precipitation is 30%.
Tuesday
A chance of rain. Partly sunny, with a high near 64. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.38°N 78.66°W (Elev. 2096 ft)
Last Update:
2:41 am EDT Mar 25, 2026
Forecast Valid:
3am EDT Mar 25, 2026-6pm EDT Mar 31, 2026
 
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