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.

Rain Fog/Mist

63°F

17°C

Humidity 97%
Wind Speed SW 9 mph
Barometer 30.06 in (1016.8 mb)
Dewpoint 62°F (17°C)
Visibility 4.00 mi
Last update 14 Oct 10:54 am EDT
Extended Forecast for

Johnstown PA

  • Today

    Today: Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 74. West wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Showers
    Likely

  • Tonight

    Tonight: Showers and thunderstorms likely before 9pm, then isolated showers between 9pm and midnight. Mostly cloudy, with a low around 51. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 51 °F

    Showers
    Likely then
    Mostly Cloudy

  • Thursday

    Thursday: A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 66 °F

    Chance
    Showers

  • Thursday Night

    Thursday Night: A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 57. Southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 57 °F

    Showers
    Likely then
    Showers

  • Friday

    Friday: Showers. High near 70. Southwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.

    High: 70 °F

    Showers

  • Friday Night

    Friday Night: Showers, mainly before 2am. Low around 35. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    Low: 35 °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 31.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 59.

    High: 59 °F

    Frost then
    Sunny

Detailed Forecast

Today
Showers and thunderstorms likely, mainly before 4pm, then showers likely and possibly a thunderstorm after 5pm. Mostly cloudy, with a high near 74. West wind around 9 mph, with gusts as high as 21 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 9pm, then isolated showers between 9pm and midnight. Mostly cloudy, with a low around 51. North wind around 5 mph becoming calm in the evening. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
A chance of showers, mainly after 2pm. Mostly cloudy, with a high near 66. Calm wind becoming southeast 5 to 7 mph in the afternoon. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Thursday Night
A chance of showers, then showers and possibly a thunderstorm after 11pm. Low around 57. Southeast wind around 8 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday
Showers. High near 70. Southwest wind 13 to 17 mph, with gusts as high as 30 mph. Chance of precipitation is 100%. New precipitation amounts between a quarter and half of an inch possible.
Friday Night
Showers, mainly before 2am. Low around 35. Chance of precipitation is 80%. 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 31.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 59.
Sunday Night
Mostly clear, with a low around 36.
Monday
Mostly sunny, with a high near 63.
Monday Night
Mostly cloudy, with a low around 41.
Tuesday
Partly sunny, with a high near 64.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown PA
 40.32°N 78.93°W (Elev. 1670 ft)
Last Update:
8:06 am EDT Oct 14, 2026
Forecast Valid:
11am EDT Oct 14, 2026-6pm EDT Oct 20, 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