Heat the Southwest; Fire Weather in the Central U.S.; Kona Low Impacting Hawaii

A rare March heat wave is ongoing with much above-normal temperatures over the Southwest U.S. through this weekend. Periods of critical fire weather will persist from the central Rockies to the central and southern Plains through the weekend as gusty winds and low relative humidity continue. A Kona low will continue to bring several rounds of moderate to heavy rainfall to Hawaii through Sunday. Read More >

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Partly Cloudy

47°F

8°C

Humidity 69%
Wind Speed N 9 mph
Barometer 29.96 in (1014.9 mb)
Dewpoint 37°F (3°C)
Visibility 10.00 mi
Wind Chill43°F (6°C)
Last update 21 Mar 11:54 am EDT
Extended Forecast for

Johnstown-Cambria County Airport PA

  • This Afternoon

    This Afternoon: Mostly sunny, with a high near 56. West wind 3 to 6 mph.

    High: 56 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 49. South wind 5 to 9 mph.

    Low: 49 °F

    Mostly Cloudy

  • Sunday

    Sunday: A chance of rain and thunderstorms after 2pm. Some of the storms could be severe.  Mostly sunny, with a high near 71. West wind 10 to 15 mph, with gusts as high as 24 mph.  Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    High: 71 °F

    Mostly Sunny
    then Severe
    Thunderstorms

  • Sunday Night

    Sunday Night: Rain before 5am, then rain and snow likely. Some thunder is also possible.  Low around 35. Northwest wind 11 to 13 mph, with gusts as high as 21 mph.  Chance of precipitation is 90%. Little or no snow accumulation expected.

    Low: 35 °F

    Severe
    Thunderstorms
    then
    Rain/Snow

  • Monday

    Monday: Rain and snow likely before 8am.  Partly sunny, with a high near 42. Northwest wind 14 to 16 mph, with gusts as high as 26 mph.  Chance of precipitation is 60%. Little or no snow accumulation expected.

    High: 42 °F

    Rain/Snow
    Likely then
    Partly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 24.

    Low: 24 °F

    Partly Cloudy

  • Tuesday

    Tuesday: Sunny, with a high near 46.

    High: 46 °F

    Sunny

  • Tuesday Night

    Tuesday Night: Mostly cloudy, with a low around 34.

    Low: 34 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Partly sunny, with a high near 50.

    High: 50 °F

    Partly Sunny

Detailed Forecast

This Afternoon
Mostly sunny, with a high near 56. West wind 3 to 6 mph.
Tonight
Mostly cloudy, with a low around 49. South wind 5 to 9 mph.
Sunday
A chance of rain and thunderstorms after 2pm. Some of the storms could be severe. Mostly sunny, with a high near 71. West wind 10 to 15 mph, with gusts as high as 24 mph. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Rain before 5am, then rain and snow likely. Some thunder is also possible. Low around 35. Northwest wind 11 to 13 mph, with gusts as high as 21 mph. Chance of precipitation is 90%. Little or no snow accumulation expected.
Monday
Rain and snow likely before 8am. Partly sunny, with a high near 42. Northwest wind 14 to 16 mph, with gusts as high as 26 mph. Chance of precipitation is 60%. Little or no snow accumulation expected.
Monday Night
Partly cloudy, with a low around 24.
Tuesday
Sunny, with a high near 46.
Tuesday Night
Mostly cloudy, with a low around 34.
Wednesday
Partly sunny, with a high near 50.
Wednesday Night
Mostly cloudy, with a low around 36.
Thursday
A chance of rain. Mostly cloudy, with a high near 57. Chance of precipitation is 30%.
Thursday Night
Rain likely. Mostly cloudy, with a low around 37. Chance of precipitation is 60%.
Friday
A chance of rain. Partly sunny, with a high near 47. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Johnstown-Cambria County Airport PA
 40.31°N 78.84°W (Elev. 2221 ft)
8:05 am EDT Mar 21, 2026
12pm EDT Mar 21, 2026-6pm EDT Mar 27, 2026
 
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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