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- Weather Observers Needed-Learn More About CoCoRaHS
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- 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.
Fair
73°F
23°C
| Humidity | 55% |
| Wind Speed | SW 8 mph |
| Barometer | 29.92 in (1012.7 mb) |
| Dewpoint | 56°F (13°C) |
| Visibility | 10.00 mi |
| Last update | 16 Apr 12:53 am EDT |
Extended Forecast for
Castle Shannon PA
Overnight
Low: 65 °F
Slight Chance
T-stormsThursday
High: 81 °F
Partly Sunny
then Showers
LikelyThursday Night
Low: 59 °F
Showers
Likely then
Slight Chance
ShowersFriday
High: 76 °F
Decreasing
CloudsFriday Night
Low: 57 °F
Partly Cloudy
Saturday
High: 81 °F
Chance
Showers then
Showers
LikelySaturday Night
Low: 44 °F
Showers
LikelySunday
High: 55 °F
Chance
Showers and
BreezySunday Night
Low: 34 °F
Partly Cloudy
Detailed Forecast
Overnight
A slight chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 65. Southwest wind around 7 mph. Chance of precipitation is 20%.
Thursday
A chance of showers, then showers likely and possibly a thunderstorm after 5pm. Partly sunny, with a high near 81. Southwest wind 9 to 15 mph, with gusts as high as 25 mph. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday Night
Showers and thunderstorms likely before midnight, then a slight chance of showers after 2am. Mostly cloudy, with a low around 59. West wind 7 to 10 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Mostly cloudy, then gradually becoming sunny, with a high near 76. West wind 6 to 8 mph.
Friday Night
Partly cloudy, with a low around 57. Northwest wind around 5 mph becoming light and variable.
Saturday
A chance of showers, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 81. Chance of precipitation is 60%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 2am, then a chance of showers. Mostly cloudy, with a low around 44. Chance of precipitation is 70%.
Sunday
A chance of showers. Partly sunny, with a high near 55. Breezy. Chance of precipitation is 40%.
Sunday Night
Partly cloudy, with a low around 34.
Monday
Mostly sunny, with a high near 51.
Monday Night
Mostly clear, with a low around 33.
Tuesday
Mostly sunny, with a high near 68.
Tuesday Night
Partly cloudy, with a low around 50.
Wednesday
Partly sunny, with a high near 68.
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)
12:36 am EDT Apr 16, 2026
1am EDT Apr 16, 2026-6pm EDT Apr 22, 2026
Additional Resources
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Hourly Weather Forecast
