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

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Fair

63°F

17°C

Humidity 84%
Wind Speed S 3 mph
Barometer 29.91 in (1012.5 mb)
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Last update 21 Jun 12:53 am EDT
Extended Forecast for

Grindstone-Rowes Run PA

  • Overnight

    Overnight: Mostly clear, with a low around 55. Calm wind.

    Low: 55 °F

    Mostly Clear

  • Sunday

    Sunday: Partly sunny, with a high near 77. Calm wind becoming west around 6 mph in the morning.

    High: 77 °F

    Partly Sunny

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 60. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    Mostly Cloudy
    then Chance
    T-storms

  • Monday

    Monday: Showers and thunderstorms, mainly before 11am, then showers and possibly a thunderstorm after noon. High near 75. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.

    High: 75 °F

    Showers

  • Monday Night

    Monday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 59. Southwest wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 59 °F

    Showers

  • Tuesday

    Tuesday: A slight chance of showers before 2pm. Partly sunny, with a high near 75. Chance of precipitation is 20%.

    High: 75 °F

    Slight Chance
    Showers

  • Tuesday Night

    Tuesday Night: Mostly clear, with a low around 54.

    Low: 54 °F

    Mostly Clear

  • Wednesday

    Wednesday: Sunny, with a high near 78.

    High: 78 °F

    Sunny

  • Wednesday Night

    Wednesday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Overnight
Mostly clear, with a low around 55. Calm wind.
Sunday
Partly sunny, with a high near 77. Calm wind becoming west around 6 mph in the morning.
Sunday Night
A chance of showers and thunderstorms, mainly after 3am. Increasing clouds, with a low around 60. Calm wind becoming southeast around 6 mph after midnight. Chance of precipitation is 40%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Monday
Showers and thunderstorms, mainly before 11am, then showers and possibly a thunderstorm after noon. High near 75. Southwest wind 9 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 100%. New rainfall amounts between 1 and 2 inches possible.
Monday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 59. Southwest wind 5 to 7 mph becoming northwest after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Tuesday
A slight chance of showers before 2pm. Partly sunny, with a high near 75. Chance of precipitation is 20%.
Tuesday Night
Mostly clear, with a low around 54.
Wednesday
Sunny, with a high near 78.
Wednesday Night
Partly cloudy, with a low around 58.
Thursday
A chance of showers and thunderstorms after 2pm. Mostly sunny, with a high near 80. Chance of precipitation is 30%.
Thursday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 59. Chance of precipitation is 30%.
Friday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
Friday Night
A chance of showers and thunderstorms. Partly cloudy, with a low around 58. Chance of precipitation is 30%.
Saturday
A chance of showers and thunderstorms. Mostly sunny, with a high near 79. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Grindstone-Rowes Run PA
 40.02°N 79.78°W (Elev. 1138 ft)
Last Update:
12:11 am EDT Jun 21, 2026
Forecast Valid:
1am EDT Jun 21, 2026-6pm EDT Jun 27, 2026
 
Forecast Discussion
 
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Additional Resources

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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