National Oceanic and Atmospheric Administration National Weather Service United States Department of Commerce

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Partly Cloudy

79°F

26°C

Humidity 79%
Wind Speed SW 9 mph
Barometer 30.05 in (1016.9 mb)
Dewpoint 72°F (22°C)
Visibility 9.00 mi
Heat Index82°F (28°C)
Last update 1 Jul 2:53 am EDT
Extended Forecast for

Castle Shannon PA

Extreme Heat Warning July 1, 03:50am until July 3, 10:00pm
Click here for hazard details and duration
Extreme Heat Warning
  •  
    Extreme Heat Warning July 1, 03:50am until July 3, 10:00pm

    NOW until 10:00pm Fri

    Extreme Heat Warning

  • Overnight

    Low: 75 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny and hot, with a high near 96. Heat index values as high as 106. West wind 7 to 9 mph.

    High: 96 °F

    Hot

  • Wednesday Night

    Wednesday Night: Mostly clear, with a low around 74. Southwest wind 3 to 6 mph.

    Low: 74 °F

    Mostly Clear

  • Thursday

    Thursday: Sunny and hot, with a high near 98. Heat index values as high as 104. Light west wind becoming southwest 5 to 9 mph in the morning.

    High: 98 °F

    Hot

  • Thursday Night

    Thursday Night: Mostly clear, with a low around 77. Southwest wind 5 to 7 mph.

    Low: 77 °F

    Mostly Clear

  • Friday

    Friday: A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Chance of precipitation is 20%.

    High: 97 °F

    Sunny then
    Slight Chance
    T-storms

  • Friday Night

    Friday Night: A chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.

    Low: 74 °F

    Chance
    T-storms

  • Independence Day

    Independence Day: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Chance of precipitation is 50%.

    High: 94 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Overnight
Mostly clear, with a low around 75. Southwest wind around 6 mph.
Wednesday
Sunny and hot, with a high near 96. Heat index values as high as 106. West wind 7 to 9 mph.
Wednesday Night
Mostly clear, with a low around 74. Southwest wind 3 to 6 mph.
Thursday
Sunny and hot, with a high near 98. Heat index values as high as 104. Light west wind becoming southwest 5 to 9 mph in the morning.
Thursday Night
Mostly clear, with a low around 77. Southwest wind 5 to 7 mph.
Friday
A slight chance of showers and thunderstorms after 2pm. Sunny and hot, with a high near 97. Chance of precipitation is 20%.
Friday Night
A chance of showers and thunderstorms between 8pm and 2am. Partly cloudy, with a low around 74. Chance of precipitation is 30%.
Independence Day
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 94. Chance of precipitation is 50%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 73. Chance of precipitation is 50%.
Sunday
Showers likely and possibly a thunderstorm after 2pm. Partly sunny and hot, with a high near 91. Chance of precipitation is 70%.
Sunday Night
Showers likely and possibly a thunderstorm. Mostly cloudy, with a low around 71. Chance of precipitation is 60%.
Monday
A chance of showers and thunderstorms. Partly sunny, with a high near 88. Chance of precipitation is 50%.
Monday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 69. Chance of precipitation is 30%.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 86. Chance of precipitation is 30%.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Castle Shannon PA
 40.37°N 80.02°W (Elev. 1109 ft)
Last Update:
2:21 am EDT Jul 1, 2026
Forecast Valid:
3am EDT Jul 1, 2026-6pm EDT Jul 7, 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