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

46°F

8°C

Humidity 96%
Wind Speed SE 9 mph
Barometer 30.22 in (1024.4 mb)
Dewpoint 45°F (7°C)
Visibility 10.00 mi
Wind Chill41°F (5°C)
Last update 24 May 1:54 am EDT
Extended Forecast for

Cassandra PA

  • Overnight

    Overnight: Showers likely, mainly between 3am and 4am. Cloudy, with a low around 47. Southeast wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.

    Low: 47 °F

    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 64. Southeast wind 6 to 9 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 64 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Showers and thunderstorms before 2am, then showers likely. Low around 60. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.

    Low: 60 °F

    Showers

  • Memorial Day

    Memorial Day: A chance of showers before 9am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers then
    Slight Chance
    T-storms

  • Monday Night

    Monday Night: A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 20%.

    Low: 59 °F

    Mostly Cloudy
    then Slight
    Chance
    Showers

  • Tuesday

    Tuesday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 77 °F

    Chance
    Showers

  • Tuesday Night

    Tuesday Night: A chance of showers before 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.

    Low: 61 °F

    Chance
    Showers then
    Mostly Cloudy

  • Wednesday

    Wednesday: A chance of showers after 8am. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.

    High: 78 °F

    Chance
    Showers

  • Wednesday Night

    Wednesday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

Detailed Forecast

Overnight
Showers likely, mainly between 3am and 4am. Cloudy, with a low around 47. Southeast wind around 10 mph, with gusts as high as 23 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 3pm. Mostly cloudy, with a high near 64. Southeast wind 6 to 9 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Showers and thunderstorms before 2am, then showers likely. Low around 60. Southeast wind around 6 mph becoming calm after midnight. Chance of precipitation is 80%. New precipitation amounts between a quarter and half of an inch possible.
Memorial Day
A chance of showers before 9am, then a slight chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 74. Calm wind becoming northwest around 5 mph in the afternoon. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday Night
A slight chance of showers before 8pm, then a slight chance of showers after 2am. Mostly cloudy, with a low around 59. Calm wind. Chance of precipitation is 20%.
Tuesday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Mostly cloudy, with a high near 77. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Tuesday Night
A chance of showers before 8pm. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Wednesday
A chance of showers after 8am. Mostly cloudy, with a high near 78. Chance of precipitation is 40%.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
Partly sunny, with a high near 75.
Thursday Night
Mostly clear, with a low around 53.
Friday
Mostly sunny, with a high near 70.
Friday Night
Partly cloudy, with a low around 50.
Saturday
Mostly sunny, with a high near 68.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Cassandra PA
 40.4°N 78.65°W (Elev. 1699 ft)
Last Update:
2:21 am EDT May 24, 2026
Forecast Valid:
2am EDT May 24, 2026-6pm EDT May 30, 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