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

54°F

12°C

Humidity 87%
Wind Speed E 6 mph
Barometer 30.20 in (1022.6 mb)
Dewpoint 50°F (10°C)
Visibility 10.00 mi
Wind Chill52°F (11°C)
Last update 15 Oct 9:54 am EDT
Extended Forecast for

Johnstown PA

  • Today

    Today: A slight chance of showers after 2pm. Mostly cloudy, with a high near 64. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.

    High: 64 °F

    Partly Sunny
    then Slight
    Chance
    Showers

  • Tonight

    Tonight: A chance of rain and thunderstorms between 4am and 5am, then a slight chance of rain. Mostly cloudy, with a low around 56. Southeast wind 6 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance Rain

  • Friday

    Friday: Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 73. Southwest wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 73 °F

    Slight Chance
    Rain then
    Showers

  • Friday Night

    Friday Night: Showers and thunderstorms before 11pm, then showers likely. Low around 39. West wind 11 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 39 °F

    Showers

  • Saturday

    Saturday: A chance of showers before 8am. Mostly sunny, with a high near 48. North wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.

    High: 48 °F

    Chance
    Showers then
    Sunny

  • Saturday Night

    Saturday Night: Widespread frost, mainly after midnight. Otherwise, clear, with a low around 31.

    Low: 31 °F

    Frost

  • Sunday

    Sunday: Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57.

    High: 57 °F

    Frost then
    Sunny

  • Sunday Night

    Sunday Night: Areas of frost after 5am. Otherwise, mostly clear, with a low around 35.

    Low: 35 °F

    Mostly Clear
    then Areas
    Frost

  • Monday

    Monday: Areas of frost before 9am. Otherwise, sunny, with a high near 61.

    High: 61 °F

    Areas Frost
    then Sunny

Detailed Forecast

Today
A slight chance of showers after 2pm. Mostly cloudy, with a high near 64. Southeast wind 5 to 8 mph. Chance of precipitation is 20%.
Tonight
A chance of rain and thunderstorms between 4am and 5am, then a slight chance of rain. Mostly cloudy, with a low around 56. Southeast wind 6 to 8 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Rain and thunderstorms likely, then showers and possibly a thunderstorm after 3pm. High near 73. Southwest wind 9 to 17 mph, with gusts as high as 29 mph. Chance of precipitation is 90%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Friday Night
Showers and thunderstorms before 11pm, then showers likely. Low around 39. West wind 11 to 13 mph, with gusts as high as 28 mph. Chance of precipitation is 80%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday
A chance of showers before 8am. Mostly sunny, with a high near 48. North wind around 11 mph, with gusts as high as 25 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch possible.
Saturday Night
Widespread frost, mainly after midnight. Otherwise, clear, with a low around 31.
Sunday
Widespread frost, mainly before 9am. Otherwise, sunny, with a high near 57.
Sunday Night
Areas of frost after 5am. Otherwise, mostly clear, with a low around 35.
Monday
Areas of frost before 9am. Otherwise, sunny, with a high near 61.
Monday Night
Partly cloudy, with a low around 39.
Tuesday
Mostly sunny, with a high near 62.
Tuesday Night
Mostly clear, with a low around 39.
Wednesday
Sunny, with a high near 62.
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Forecast Area
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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 15, 2026
Forecast Valid:
10am EDT Oct 15, 2026-6pm EDT Oct 21, 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