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.

Fog/Mist

57°F

14°C

Humidity NA
Wind Speed Calm
Barometer 30.17 in (1021.4 mb)
Dewpoint N/A
Visibility 1.50 mi
Last update 15 Aug 6:56 am EDT
Extended Forecast for

Tarentum PA

  • Today

    Today: Areas of fog between 8am and 9am. Otherwise, sunny, with a high near 89. Calm wind.

    High: 89 °F

    Areas Fog
    then Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 65. Calm wind.

    Low: 65 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 90. Calm wind.

    High: 90 °F

    Hot

  • Saturday Night

    Saturday Night: Partly cloudy, with a low around 68. Calm wind.

    Low: 68 °F

    Partly Cloudy

  • Sunday

    Sunday: A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 87 °F

    Slight Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Chance
    T-storms then
    Partly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 86.

    High: 86 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 65.

    Low: 65 °F

    Partly Cloudy

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.

    High: 85 °F

    Mostly Sunny
    then Chance
    T-storms

Detailed Forecast

Today
Areas of fog between 8am and 9am. Otherwise, sunny, with a high near 89. Calm wind.
Tonight
Mostly clear, with a low around 65. Calm wind.
Saturday
Sunny and hot, with a high near 90. Calm wind.
Saturday Night
Partly cloudy, with a low around 68. Calm wind.
Sunday
A slight chance of showers, then a chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 87. Calm wind becoming west around 6 mph in the afternoon. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 66. Chance of precipitation is 30%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Monday
Mostly sunny, with a high near 86.
Monday Night
Partly cloudy, with a low around 65.
Tuesday
A chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 85. Chance of precipitation is 40%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 65. Chance of precipitation is 40%.
Wednesday
A chance of showers and thunderstorms. Partly sunny, with a high near 81. Chance of precipitation is 50%.
Wednesday Night
A chance of thunderstorms. Partly cloudy, with a low around 62. Chance of precipitation is 30%.
Thursday
Mostly sunny, with a high near 83.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Tarentum PA
 40.62°N 79.78°W (Elev. 1175 ft)
Last Update:
4:05 am EDT Aug 15, 2025
Forecast Valid:
7am EDT Aug 15, 2025-6pm EDT Aug 21, 2025
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation