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- Weather Observers Needed-Learn More About CoCoRaHS
- The Growing Season Active for much of eastern OH, northern WV and southwestern PA
- Check Out Our Graphical Hazardous Weather Outlook
- Pennsylvania's Severe Weather Awareness Week | April 13-17, 2026
- Observe down trees, hail, of flooding? We would love to know!
Hazardous Weather Conditions
Current conditions at
Pittsburgh - Allegheny County Airport (KAGC)
Lat: 40.36°NLon: 79.92°WElev: 1237ft.
Partly Cloudy
62°F
17°C
| Humidity | 75% |
| Wind Speed | Vrbl 6 mph |
| Barometer | 29.91 in (1012.3 mb) |
| Dewpoint | 54°F (12°C) |
| Visibility | 10.00 mi |
| Last update | 17 Apr 2:53 am EDT |
Extended Forecast for
Castle Shannon PA
Overnight
Low: 59 °F
Partly Cloudy
Friday
High: 77 °F
Mostly Sunny
Friday Night
Low: 58 °F
Partly Cloudy
Saturday
High: 82 °F
Slight Chance
Showers then
Showers
LikelySaturday Night
Low: 42 °F
Showers
Sunday
High: 52 °F
Showers
LikelySunday Night
Low: 34 °F
Partly Cloudy
Monday
High: 48 °F
Mostly Sunny
Monday Night
Low: 31 °F
Mostly Clear
Detailed Forecast
Overnight
Partly cloudy, with a low around 59. West wind around 7 mph.
Friday
Mostly sunny, with a high near 77. Northwest wind around 7 mph.
Friday Night
Partly cloudy, with a low around 58. Southeast wind 3 to 6 mph.
Saturday
A slight chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 82. South wind 9 to 16 mph, with gusts as high as 29 mph. Chance of precipitation is 70%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and possibly a thunderstorm. Low around 42. West wind 11 to 14 mph. Chance of precipitation is 90%. New precipitation amounts between a half and three quarters of an inch possible.
Sunday
Showers likely, mainly before 8am. Partly sunny, with a high near 52. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch possible.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 48.
Monday Night
Mostly clear, with a low around 31.
Tuesday
Mostly sunny, with a high near 67.
Tuesday Night
Partly cloudy, with a low around 52.
Wednesday
A chance of showers. Mostly sunny, with a high near 71. Chance of precipitation is 30%.
Wednesday Night
A chance of showers. Partly cloudy, with a low around 49. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 74.
Additional Forecasts and Information
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Forecast AreaABOUT THIS FORECAST
Point Forecast:
Castle Shannon PA
40.37°N 80.02°W (Elev. 1109 ft)
40.37°N 80.02°W (Elev. 1109 ft)
2:21 am EDT Apr 17, 2026
2am EDT Apr 17, 2026-6pm EDT Apr 23, 2026
Additional Resources
Radar & Satellite Image
Hourly Weather Forecast
