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

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

A Few Clouds

69°F

21°C

Humidity 70%
Wind Speed Calm
Barometer 30.29 in
Dewpoint 59°F (15°C)
Visibility 10.00 mi
Last update 8 Sep 9:56 am EDT
Extended Forecast for

Portersville PA

  • Today

    Today: Mostly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Mostly Sunny

  • Tonight

    Tonight: Mostly cloudy, with a low around 64. Light southeast wind.

    Low: 64 °F

    Mostly Cloudy

  • Wednesday

    Wednesday: Mostly sunny, with a high near 84. Southwest wind 6 to 13 mph, with gusts as high as 24 mph.

    High: 84 °F

    Mostly Sunny

  • Wednesday Night

    Wednesday Night: A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 66. Southwest wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.

    Low: 66 °F

    Showers

  • Thursday

    Thursday: Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. West wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely

  • Thursday Night

    Thursday Night: A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 56 °F

    Chance
    T-storms then
    Partly Cloudy

  • Friday

    Friday: Sunny, with a high near 76.

    High: 76 °F

    Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 56.

    Low: 56 °F

    Mostly Clear

  • Saturday

    Saturday: Mostly sunny, with a high near 81.

    High: 81 °F

    Mostly Sunny

Detailed Forecast

Today
Mostly sunny, with a high near 82. Calm wind.
Tonight
Mostly cloudy, with a low around 64. Light southeast wind.
Wednesday
Mostly sunny, with a high near 84. Southwest wind 6 to 13 mph, with gusts as high as 24 mph.
Wednesday Night
A chance of showers and thunderstorms, then showers and possibly a thunderstorm after 8pm. Low around 66. Southwest wind 6 to 9 mph, with gusts as high as 22 mph. Chance of precipitation is 100%. New rainfall amounts between a half and three quarters of an inch possible.
Thursday
Showers likely, with thunderstorms also possible after 2pm. Mostly cloudy, with a high near 76. West wind 5 to 7 mph. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
A chance of thunderstorms before 8pm. Mostly cloudy, with a low around 56. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Friday
Sunny, with a high near 76.
Friday Night
Mostly clear, with a low around 56.
Saturday
Mostly sunny, with a high near 81.
Saturday Night
Partly cloudy, with a low around 63.
Sunday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 30%.
Sunday Night
A chance of showers. Mostly cloudy, with a low around 61. Chance of precipitation is 30%.
Monday
A chance of showers. Partly sunny, with a high near 79. Chance of precipitation is 30%.
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ABOUT THIS FORECAST

 
Point Forecast:
Portersville PA
 40.93°N 80.14°W (Elev. 1296 ft)
Last Update:
7:26 am EDT Sep 8, 2026
Forecast Valid:
10am EDT Sep 8, 2026-6pm EDT Sep 14, 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