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.

Overcast

45°F

7°C

Humidity 93%
Wind Speed N 16 G 24 mph
Barometer 29.98 in (1014.9 mb)
Dewpoint 43°F (6°C)
Visibility 10.00 mi
Wind Chill38°F (3°C)
Last update 17 Oct 12:54 am EDT
Extended Forecast for

Portage PA

Freeze Watch October 18, 01:00am until October 18, 09:00am
Click here for hazard details and duration
Freeze Watch

  • Overnight

    Overnight: A slight chance of light rain. Cloudy, with a low around 39. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.

    Low: 39 °F

    Slight Chance
    Light Rain

  • Saturday

    Saturday: Cloudy through mid morning, then gradual clearing, with a high near 45. North wind 10 to 14 mph, with gusts as high as 24 mph.

    High: 45 °F

    Gradual
    Clearing

  • Saturday Night

    Saturday Night: Widespread frost after 1am. Otherwise, clear, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.

    Low: 30 °F

    Clear then
    Frost

  • Sunday

    Sunday: Widespread frost before 9am. Otherwise, sunny, with a high near 55. Light and variable wind.

    High: 55 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am. Otherwise, clear, with a low around 33. Calm wind.

    Low: 33 °F

    Clear then
    Areas Frost

  • Monday

    Monday: Widespread frost, mainly between 7am and 9am. Otherwise, sunny, with a high near 60.

    High: 60 °F

    Frost then
    Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 38.

    Low: 38 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 63.

    High: 63 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 42.

    Low: 42 °F

    Mostly Clear

Detailed Forecast

Overnight
A slight chance of light rain. Cloudy, with a low around 39. North wind 11 to 14 mph, with gusts as high as 25 mph. Chance of precipitation is 20%.
Saturday
Cloudy through mid morning, then gradual clearing, with a high near 45. North wind 10 to 14 mph, with gusts as high as 24 mph.
Saturday Night
Widespread frost after 1am. Otherwise, clear, with a low around 30. Northwest wind around 6 mph becoming calm in the evening.
Sunday
Widespread frost before 9am. Otherwise, sunny, with a high near 55. Light and variable wind.
Sunday Night
Areas of frost after 5am. Otherwise, clear, with a low around 33. Calm wind.
Monday
Widespread frost, mainly between 7am and 9am. Otherwise, sunny, with a high near 60.
Monday Night
Mostly clear, with a low around 38.
Tuesday
Sunny, with a high near 63.
Tuesday Night
Mostly clear, with a low around 42.
Wednesday
Sunny, with a high near 60.
Wednesday Night
Mostly clear, with a low around 43.
Thursday
Mostly sunny, with a high near 59.
Thursday Night
Mostly clear, with a low around 44.
Friday
Mostly sunny, with a high near 63.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Portage PA
 40.38°N 78.66°W (Elev. 2096 ft)
Last Update:
1:01 am EDT Oct 17, 2026
Forecast Valid:
1am EDT Oct 17, 2026-6pm EDT Oct 23, 2026
 
Forecast Discussion
 
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Additional Resources

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Hourly Weather Forecast

National Digital Forecast Database

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation