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.

Fair

52°F

11°C

Humidity 66%
Wind Speed S 6 mph
Barometer 30.06 in (1018.5 mb)
Dewpoint 41°F (5°C)
Visibility 10.00 mi
Wind Chill50°F (10°C)
Last update 16 May 12:56 am EDT
Extended Forecast for

Tarentum PA

  • Overnight

    Overnight: Mostly clear, with a low around 49. Calm wind.

    Low: 49 °F

    Mostly Clear

  • Saturday

    Saturday: A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 83. South wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 83 °F

    Mostly Sunny
    then Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 61 °F

    Showers
    Likely then
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 84 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 63. Calm wind.

    Low: 63 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 92.

    High: 92 °F

    Hot

  • Monday Night

    Monday Night: Mostly clear, with a low around 69.

    Low: 69 °F

    Mostly Clear

  • Tuesday

    Tuesday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Chance of precipitation is 30%.

    High: 91 °F

    Mostly Sunny
    then Chance
    T-storms

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.

    Low: 68 °F

    Chance
    T-storms then
    Chance
    Showers

Detailed Forecast

Overnight
Mostly clear, with a low around 49. Calm wind.
Saturday
A slight chance of showers between 1pm and 2pm, then a chance of showers and thunderstorms after 2pm. Increasing clouds, with a high near 83. South wind 5 to 13 mph, with gusts as high as 23 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms likely before 1am, then a chance of showers. Mostly cloudy, with a low around 61. Southwest wind 3 to 8 mph. Chance of precipitation is 60%. New precipitation amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A chance of showers, with thunderstorms also possible after 2pm. Partly sunny, with a high near 84. Calm wind becoming southwest around 5 mph in the afternoon. Chance of precipitation is 40%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday Night
Partly cloudy, with a low around 63. Calm wind.
Monday
Sunny and hot, with a high near 92.
Monday Night
Mostly clear, with a low around 69.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 91. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 68. Chance of precipitation is 50%.
Wednesday
Showers. High near 78. Chance of precipitation is 80%.
Wednesday Night
Showers. Low around 54. Chance of precipitation is 80%.
Thursday
Partly sunny, with a high near 70.
Thursday Night
Partly cloudy, with a low around 51.
Friday
Mostly sunny, with a high near 76.
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Forecast Area
Tiles ©ESRI

ABOUT THIS FORECAST

 
Point Forecast:
Tarentum PA
 40.61°N 79.75°W (Elev. 833 ft)
Last Update:
12:16 am EDT May 16, 2026
Forecast Valid:
1am EDT May 16, 2026-6pm EDT May 22, 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