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

59°F

15°C

Humidity 83%
Wind Speed SW 7 mph
Barometer 29.97 in (1013.8 mb)
Dewpoint 54°F (12°C)
Visibility 10.00 mi
Last update 11 Mar 2:54 am EDT
Extended Forecast for

2 Miles SSE Portage PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 58. South wind around 8 mph.

    Low: 58 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Showers and thunderstorms likely before 10am, then showers and possibly a thunderstorm between 10am and 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could be severe. High near 72. South wind 10 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.

    High: 72 °F

    Severe
    Thunderstorms

  • Wednesday Night

    Wednesday Night: Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. Breezy, with a west wind 17 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.

    Low: 30 °F

    Showers then
    Rain/Snow and
    Breezy

  • Thursday

    Thursday: Cloudy, then gradually becoming mostly sunny, with a high near 37. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 44 mph.

    High: 37 °F

    Decreasing
    Clouds and
    Breezy

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 28. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.

    Low: 28 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 20%.

    High: 49 °F

    Slight Chance
    Rain/Snow and
    Breezy

  • Friday Night

    Friday Night: Partly cloudy, with a low around 28. Breezy.

    Low: 28 °F

    Partly Cloudy
    and Breezy

  • Saturday

    Saturday: Mostly sunny, with a high near 42. Breezy.

    High: 42 °F

    Mostly Sunny
    and Breezy
    then Mostly
    Sunny

  • Saturday Night

    Saturday Night: Mostly cloudy, with a low around 32.

    Low: 32 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 58. South wind around 8 mph.
Wednesday
Showers and thunderstorms likely before 10am, then showers and possibly a thunderstorm between 10am and 3pm, then a chance of showers and thunderstorms after 3pm. Some of the storms could be severe. High near 72. South wind 10 to 17 mph, with gusts as high as 34 mph. Chance of precipitation is 90%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday Night
Rain showers before 5am, then a chance of rain and snow showers. Some thunder is also possible. Low around 30. Breezy, with a west wind 17 to 21 mph, with gusts as high as 38 mph. Chance of precipitation is 100%. Little or no snow accumulation expected.
Thursday
Cloudy, then gradually becoming mostly sunny, with a high near 37. Breezy, with a northwest wind 20 to 23 mph, with gusts as high as 44 mph.
Thursday Night
Mostly clear, with a low around 28. Northwest wind 8 to 13 mph, with gusts as high as 23 mph.
Friday
A slight chance of snow before 11am, then a slight chance of rain and snow between 11am and 2pm, then a slight chance of rain after 2pm. Mostly cloudy, with a high near 49. Breezy. Chance of precipitation is 20%.
Friday Night
Partly cloudy, with a low around 28. Breezy.
Saturday
Mostly sunny, with a high near 42. Breezy.
Saturday Night
Mostly cloudy, with a low around 32.
Sunday
Mostly cloudy, with a high near 54. Breezy.
Sunday Night
Showers. Low around 35. Breezy. Chance of precipitation is 80%.
Monday
Rain and snow showers. High near 46. Breezy. Chance of precipitation is 80%.
Monday Night
A chance of snow showers. Mostly cloudy, with a low around 18. Breezy. Chance of precipitation is 30%.
Tuesday
Partly sunny, with a high near 27.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
2 Miles SSE Portage PA
 40.36°N 78.66°W (Elev. 2103 ft)
Last Update:
2:26 am EDT Mar 11, 2026
Forecast Valid:
3am EDT Mar 11, 2026-6pm EDT Mar 17, 2026
 
Forecast Discussion
 
Get as KML Get as XML

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