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

31°F

-1°C

Humidity 76%
Wind Speed Vrbl 3 mph
Barometer 30.12 in (1021.6 mb)
Dewpoint 24°F (-4°C)
Visibility 10.00 mi
Last update 26 Dec 12:53 am EST
Extended Forecast for

Grindstone-Rowes Run PA

  • Overnight

    Overnight: Mostly cloudy, with a low around 29. Light northeast wind.

    Low: 29 °F

    Mostly Cloudy

  • Friday

    Friday: Rain or freezing rain likely before noon, then rain. Some thunder is also possible. High near 54. East wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.

    High: 54 °F

    Rain/Freezing
    Rain Likely
    then Rain

  • Friday Night

    Friday Night: Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 10pm. Low around 36. Southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 36 °F

    Rain then
    Cloudy

  • Saturday

    Saturday: Mostly cloudy, with a high near 43. Light and variable wind.

    High: 43 °F

    Mostly Cloudy

  • Saturday Night

    Saturday Night: Patchy fog between 9pm and 3am. Otherwise, mostly cloudy, with a low around 32. Calm wind.

    Low: 32 °F

    Patchy Fog

  • Sunday

    Sunday: Rain. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.

    High: 60 °F

    Rain

  • Sunday Night

    Sunday Night: Rain. Low around 51. Chance of precipitation is 100%.

    Low: 51 °F

    Rain Likely
    then Rain

  • Monday

    Monday: Rain before 1pm, then a chance of rain and snow. High near 56. Chance of precipitation is 90%.

    High: 56 °F

    Rain then
    Rain/Snow

  • Monday Night

    Monday Night: Snow likely, mainly before 1am. Cloudy, with a low around 20. Chance of precipitation is 60%.

    Low: 20 °F

    Snow Likely

Detailed Forecast

Overnight
Mostly cloudy, with a low around 29. Light northeast wind.
Friday
Rain or freezing rain likely before noon, then rain. Some thunder is also possible. High near 54. East wind 6 to 10 mph becoming south in the afternoon. Winds could gust as high as 20 mph. Chance of precipitation is 100%. Little or no ice accumulation expected.
Friday Night
Rain and possibly a thunderstorm before 8pm, then a chance of rain between 8pm and 10pm. Low around 36. Southwest wind 5 to 8 mph becoming northwest after midnight. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Saturday
Mostly cloudy, with a high near 43. Light and variable wind.
Saturday Night
Patchy fog between 9pm and 3am. Otherwise, mostly cloudy, with a low around 32. Calm wind.
Sunday
Rain. High near 60. Chance of precipitation is 80%. New precipitation amounts between a tenth and quarter of an inch possible.
Sunday Night
Rain. Low around 51. Chance of precipitation is 100%.
Monday
Rain before 1pm, then a chance of rain and snow. High near 56. Chance of precipitation is 90%.
Monday Night
Snow likely, mainly before 1am. Cloudy, with a low around 20. Chance of precipitation is 60%.
Tuesday
Mostly cloudy, with a high near 29.
Tuesday Night
Mostly cloudy, with a low around 22.
Wednesday
Mostly cloudy, with a high near 33.
Wednesday Night
A chance of snow. Mostly cloudy, with a low around 19. Chance of precipitation is 30%.
New Year's Day
Mostly cloudy, with a high near 28.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Grindstone-Rowes Run PA
 40.02°N 79.81°W (Elev. 994 ft)
Last Update:
12:21 am EST Dec 26, 2025
Forecast Valid:
1am EST Dec 26, 2025-6pm EST Jan 1, 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