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Hazardous Weather Conditions

Current conditions at

Johnstown - Cambria County Airport (KJST)

Lat: 40.31°NLon: 78.83°WElev: 2274ft.

Fair

68°F

20°C

Humidity 90%
Wind Speed S 5 mph
Barometer 30.18 in (1020.2 mb)
Dewpoint 65°F (18°C)
Visibility 10.00 mi
Last update 30 Jun 3:54 am EDT
Extended Forecast for

Seward PA

Heat Advisory June 30, 11:00am until July 3, 10:00pm
Click here for hazard details and duration
Heat Advisory

  • Today

    Today: Areas of fog before 8am. Otherwise, mostly sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon.

    High: 93 °F

    Areas Fog
    then Mostly
    Sunny

  • Tonight

    Tonight: A slight chance of showers between 2am and 3am. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.

    Low: 72 °F

    Partly Cloudy
    then Slight
    Chance
    Showers and
    Patchy Fog

  • Wednesday

    Wednesday: Patchy fog before 8am. Otherwise, sunny and hot, with a high near 96. Heat index values as high as 105. Calm wind becoming west 5 to 7 mph in the morning.

    High: 96 °F

    Patchy Fog
    then Sunny

  • Wednesday Night

    Wednesday Night: Areas of fog after 3am. Otherwise, clear, with a low around 72. Calm wind.

    Low: 72 °F

    Clear then
    Areas Fog

  • Thursday

    Thursday: Areas of fog before 8am. Otherwise, sunny and hot, with a high near 97. Calm wind becoming west 5 to 7 mph in the afternoon.

    High: 97 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 73.

    Low: 73 °F

    Mostly Clear

  • Friday

    Friday: Sunny and hot, with a high near 96.

    High: 96 °F

    Hot

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.

    Low: 71 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 60%.

    High: 91 °F

    Mostly Sunny
    then Showers
    Likely

Detailed Forecast

Today
Areas of fog before 8am. Otherwise, mostly sunny and hot, with a high near 93. Heat index values as high as 100. Calm wind becoming southwest around 6 mph in the afternoon.
Tonight
A slight chance of showers between 2am and 3am. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 72. Calm wind. Chance of precipitation is 20%.
Wednesday
Patchy fog before 8am. Otherwise, sunny and hot, with a high near 96. Heat index values as high as 105. Calm wind becoming west 5 to 7 mph in the morning.
Wednesday Night
Areas of fog after 3am. Otherwise, clear, with a low around 72. Calm wind.
Thursday
Areas of fog before 8am. Otherwise, sunny and hot, with a high near 97. Calm wind becoming west 5 to 7 mph in the afternoon.
Thursday Night
Mostly clear, with a low around 73.
Friday
Sunny and hot, with a high near 96.
Friday Night
A chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 71. Chance of precipitation is 30%.
Independence Day
Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 60%.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 68. Chance of precipitation is 60%.
Sunday
A chance of showers and thunderstorms. Partly sunny and hot, with a high near 90. Chance of precipitation is 40%.
Sunday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 67. Chance of precipitation is 40%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 87. Chance of precipitation is 50%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Seward PA
 40.42°N 79.03°W (Elev. 1168 ft)
Last Update:
4:11 am EDT Jun 30, 2026
Forecast Valid:
4am EDT Jun 30, 2026-6pm EDT Jul 6, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

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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