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.

A Few Clouds

66°F

19°C

Humidity 87%
Wind Speed S 5 mph
Barometer 29.91 in (1011.3 mb)
Dewpoint 62°F (17°C)
Visibility 9.00 mi
Last update 21 Jul 2:54 am EDT
Extended Forecast for

Johnstown-Cambria County Airport PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 65. South wind around 7 mph.

    Low: 65 °F

    Mostly Cloudy

  • Tuesday

    Tuesday: Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe and produce heavy rainfall. High near 76. Southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 76 °F

    Chance
    Showers then
    Severe
    Thunderstorms

  • Tuesday Night

    Tuesday Night: Showers and thunderstorms before 1am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 62. Southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 62 °F

    Severe
    Thunderstorms
    then Chance
    Showers

  • Wednesday

    Wednesday: A slight chance of showers before 9am. Partly sunny, with a high near 69. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.

    High: 69 °F

    Slight Chance
    Showers then
    Mostly Sunny

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 51. Northwest wind 6 to 11 mph becoming light after midnight.

    Low: 51 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny, with a high near 71.

    High: 71 °F

    Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Friday

    Friday: Mostly sunny, with a high near 75.

    High: 75 °F

    Mostly Sunny

  • Friday Night

    Friday Night: Mostly cloudy, with a low around 59.

    Low: 59 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Mostly cloudy, with a low around 65. South wind around 7 mph.
Tuesday
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. Some of the storms could be severe and produce heavy rainfall. High near 76. Southwest wind 9 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
Showers and thunderstorms before 1am, then a chance of showers. Some of the storms could be severe and produce heavy rainfall. Low around 62. Southwest wind 9 to 13 mph, with gusts as high as 22 mph. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Wednesday
A slight chance of showers before 9am. Partly sunny, with a high near 69. West wind 10 to 14 mph, with gusts as high as 23 mph. Chance of precipitation is 20%.
Wednesday Night
Mostly clear, with a low around 51. Northwest wind 6 to 11 mph becoming light after midnight.
Thursday
Sunny, with a high near 71.
Thursday Night
Mostly clear, with a low around 53.
Friday
Mostly sunny, with a high near 75.
Friday Night
Mostly cloudy, with a low around 59.
Saturday
Mostly sunny, with a high near 75.
Saturday Night
Partly cloudy, with a low around 61.
Sunday
A chance of showers and thunderstorms. Partly sunny, with a high near 78. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 50%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 76. Chance of precipitation is 50%.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown-Cambria County Airport PA
 40.31°N 78.84°W (Elev. 2221 ft)
Last Update:
2:26 am EDT Jul 21, 2026
Forecast Valid:
3am EDT Jul 21, 2026-6pm EDT Jul 27, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation