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

Hazardous Weather Conditions

Current conditions at

Pittsburgh - Allegheny County Airport (KAGC)

Lat: 40.36°NLon: 79.92°WElev: 1237ft.

Heavy Rain Fog/Mist

68°F

20°C

Humidity 100%
Wind Speed E 3 mph
Barometer 29.96 in (1014.2 mb)
Dewpoint 68°F (20°C)
Visibility 1.50 mi
Last update 20 Aug 6:53 am EDT
Extended Forecast for

Finleyville PA

Flood Watch August 20, 07:44am until August 20, 02:00pm
Click here for hazard details and duration
Flood Watch
  •  
    Flood Watch August 20, 07:44am until August 20, 02:00pm

    NOW until 2:00pm Thu

    Flood Watch

  • Today

    High: 75 °F

    Heavy Rain
    then Showers
    Likely

  • Tonight

    Tonight: Partly cloudy, with a low around 61. Northeast wind 3 to 5 mph.

    Low: 61 °F

    Partly Cloudy

  • Friday

    Friday: A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 78. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 78 °F

    Mostly Sunny
    then Chance
    T-storms

  • Friday Night

    Friday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 63. Light east wind. Chance of precipitation is 20%.

    Low: 63 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Saturday

    Saturday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Calm wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 40%.

    High: 79 °F

    Partly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Chance
    T-storms then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.

    High: 75 °F

    Partly Sunny
    then Chance
    Showers

  • Sunday Night

    Sunday Night: A chance of showers before 8pm. Partly cloudy, with a low around 56. Chance of precipitation is 30%.

    Low: 56 °F

    Chance
    Showers then
    Mostly Clear

Detailed Forecast

Today
Showers and possibly a thunderstorm before 1pm, then a chance of showers and thunderstorms, mainly between 1pm and 5pm. Some of the storms could produce heavy rainfall. High near 75. Calm wind becoming north around 5 mph in the afternoon. Chance of precipitation is 90%. New rainfall amounts between a half and three quarters of an inch possible.
Tonight
Partly cloudy, with a low around 61. Northeast wind 3 to 5 mph.
Friday
A chance of showers and thunderstorms, mainly after 3pm. Mostly sunny, with a high near 78. East wind around 5 mph. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday Night
A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog after 2am. Otherwise, partly cloudy, with a low around 63. Light east wind. Chance of precipitation is 20%.
Saturday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 79. Calm wind becoming southwest 5 to 9 mph in the morning. Chance of precipitation is 40%.
Saturday Night
A chance of showers and thunderstorms before 2am. Mostly cloudy, with a low around 61. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers after 2pm. Partly sunny, with a high near 75. Chance of precipitation is 30%.
Sunday Night
A chance of showers before 8pm. Partly cloudy, with a low around 56. Chance of precipitation is 30%.
Monday
Sunny, with a high near 75.
Monday Night
Mostly clear, with a low around 56.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 59.
Wednesday
Mostly sunny, with a high near 79.
Basemap Options
Click map to change the forecast location
Loading map...
Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Finleyville PA
 40.24°N 80.01°W (Elev. 1214 ft)
Last Update:
2:21 am EDT Aug 20, 2026
Forecast Valid:
7am EDT Aug 20, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
Get as KML Get as XML

Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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