Hazardous Weather Conditions
Current conditions at
Pittsburgh - Allegheny County Airport (KAGC)
Lat: 40.36°NLon: 79.92°WElev: 1237ft.
Fair
69°F
21°C
| Humidity | 96% |
| Wind Speed | S 3 mph |
| Barometer | 30.03 in (1016.7 mb) |
| Dewpoint | 68°F (20°C) |
| Visibility | 10.00 mi |
| Last update | 4 Sep 7:53 am EDT |
Extended Forecast for
Castle Shannon PA
Today
High: 84 °F
Slight Chance
T-storms then
ShowersTonight
Low: 67 °F
Chance
T-storms then
Showers
LikelySaturday
High: 79 °F
Showers
LikelySaturday Night
Low: 61 °F
Chance
Showers then
Mostly ClearSunday
High: 78 °F
Sunny
Sunday Night
Low: 59 °F
Mostly Clear
Labor Day
High: 79 °F
Sunny
Monday Night
Low: 60 °F
Partly Cloudy
Tuesday
High: 81 °F
Partly Sunny
Detailed Forecast
Today
Showers and thunderstorms likely, then showers and possibly a thunderstorm after 4pm. High near 84. Light west wind increasing to 5 to 9 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Tonight
Showers and thunderstorms likely before 4am, then showers likely and possibly a thunderstorm between 4am and 5am, then a chance of showers and thunderstorms after 5am. Mostly cloudy, with a low around 67. West wind 3 to 5 mph. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Showers and thunderstorms likely before 2pm, then a chance of showers and thunderstorms after 3pm. Partly sunny, with a high near 79. Calm wind becoming north 5 to 7 mph in the morning. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
A chance of showers and thunderstorms before 7pm. Partly cloudy, with a low around 61. North wind around 7 mph. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
Sunny, with a high near 78. Northeast wind 7 to 9 mph.
Sunday Night
Mostly clear, with a low around 59.
Labor Day
Sunny, with a high near 79.
Monday Night
Partly cloudy, with a low around 60.
Tuesday
Partly sunny, with a high near 81.
Tuesday Night
Mostly cloudy, with a low around 65.
Wednesday
Partly sunny, with a high near 83.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Thursday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Additional Forecasts and Information
Basemap Options
Click map to change the forecast location
Loading map...
Forecast AreaABOUT THIS FORECAST
Point Forecast:
Castle Shannon PA
40.35°N 80.03°W (Elev. 1198 ft)
40.35°N 80.03°W (Elev. 1198 ft)
7:11 am EDT Sep 4, 2026
8am EDT Sep 4, 2026-6pm EDT Sep 10, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
