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.

Mostly Cloudy

70°F

21°C

Humidity 82%
Wind Speed NW 13 mph
Barometer 30.02 in (1015.4 mb)
Dewpoint 64°F (18°C)
Visibility 10.00 mi
Last update 14 Oct 4:54 pm EDT
Extended Forecast for

Johnstown PA

  • This Afternoon

    This Afternoon: A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Northwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 75 °F

    Chance
    Showers

  • Tonight

    Tonight: A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 52. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 52 °F

    Chance
    Showers then
    Mostly Cloudy

  • Thursday

    Thursday: A slight chance of showers before 11am, then a slight chance of showers after 1pm. Partly sunny, with a high near 64. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.

    High: 64 °F

    Slight Chance
    Showers

  • Thursday Night

    Thursday Night: Showers and thunderstorms, mainly before 4am, then a slight chance of thunderstorms after 5am. Low around 57. Southeast wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Chance
    Showers then
    Showers

  • Friday

    Friday: Showers, mainly after 2pm. High near 75. Southwest wind 9 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 75 °F

    Chance
    Showers then
    Showers

  • Friday Night

    Friday Night: Showers, mainly before 2am. Low around 37. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 37 °F

    Showers

  • Saturday

    Saturday: Mostly sunny, with a high near 48.

    High: 48 °F

    Mostly Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after 1am. Otherwise, clear, with a low around 30.

    Low: 30 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 56.

    High: 56 °F

    Frost then
    Sunny

Detailed Forecast

This Afternoon
A chance of showers and thunderstorms. Mostly cloudy, with a high near 75. Northwest wind around 7 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
A chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 52. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A slight chance of showers before 11am, then a slight chance of showers after 1pm. Partly sunny, with a high near 64. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 20%.
Thursday Night
Showers and thunderstorms, mainly before 4am, then a slight chance of thunderstorms after 5am. Low around 57. Southeast wind 6 to 8 mph, with gusts as high as 20 mph. Chance of precipitation is 80%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Showers, mainly after 2pm. High near 75. Southwest wind 9 to 16 mph, with gusts as high as 31 mph. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Friday Night
Showers, mainly before 2am. Low around 37. Chance of precipitation is 90%. New precipitation amounts between a tenth and quarter of an inch possible.
Saturday
Mostly sunny, with a high near 48.
Saturday Night
Widespread frost, mainly after 1am. Otherwise, clear, with a low around 30.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 56.
Sunday Night
Mostly clear, with a low around 34.
Monday
Sunny, with a high near 62.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Partly cloudy, with a low around 40.
Wednesday
Sunny, with a high near 64.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
2:21 pm EDT Oct 14, 2026
Forecast Valid:
5pm EDT Oct 14, 2026-6pm EDT Oct 21, 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