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.

Partly Cloudy

77°F

25°C

Humidity 71%
Wind Speed W 3 mph
Barometer 29.97 in (1014.6 mb)
Dewpoint 67°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 10 Sep 5:56 pm EDT
Extended Forecast for

McGrann PA

  • Tonight

    Tonight: A slight chance of showers after midnight. Patchy dense fog after 10pm. Otherwise, mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.

    Low: 60 °F

    Patchy Fog
    then Slight
    Chance
    Showers and
    Areas Dense
    Fog

  • Friday

    Friday: Patchy fog before 10am. Otherwise, mostly sunny, with a high near 82. Calm wind.

    High: 82 °F

    Patchy Fog
    then Mostly
    Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 60. Calm wind.

    Low: 60 °F

    Partly Cloudy

  • Saturday

    Saturday: A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    High: 83 °F

    Chance
    Showers then
    Showers

  • Saturday Night

    Saturday Night: Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Showers

  • Sunday

    Sunday: A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 20%.

    High: 84 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Mostly cloudy, with a low around 60.

    Low: 60 °F

    Mostly Cloudy

  • Monday

    Monday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Partly cloudy, with a low around 58.

    Low: 58 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers after midnight. Patchy dense fog after 10pm. Otherwise, mostly cloudy, with a low around 60. West wind around 5 mph becoming calm in the evening. Chance of precipitation is 20%.
Friday
Patchy fog before 10am. Otherwise, mostly sunny, with a high near 82. Calm wind.
Friday Night
Partly cloudy, with a low around 60. Calm wind.
Saturday
A chance of showers, then showers and possibly a thunderstorm after 2pm. High near 83. Light and variable wind becoming south 5 to 7 mph in the morning. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Saturday Night
Showers and possibly a thunderstorm before 2am, then a slight chance of showers. Low around 66. South wind around 5 mph becoming calm in the evening. Chance of precipitation is 80%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers before 8am, then a slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 84. Chance of precipitation is 20%.
Sunday Night
Mostly cloudy, with a low around 60.
Monday
Mostly sunny, with a high near 78.
Monday Night
Partly cloudy, with a low around 58.
Tuesday
Mostly sunny, with a high near 85.
Tuesday Night
A chance of showers. Partly cloudy, with a low around 64. Chance of precipitation is 30%.
Wednesday
A chance of showers. Partly sunny, with a high near 84. Chance of precipitation is 40%.
Wednesday Night
A chance of showers. Mostly cloudy, with a low around 64. Chance of precipitation is 40%.
Thursday
Showers likely. Partly sunny, with a high near 82. Chance of precipitation is 60%.
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ABOUT THIS FORECAST

 
Point Forecast:
McGrann PA
 40.79°N 79.52°W (Elev. 801 ft)
Last Update:
2:21 pm EDT Sep 10, 2026
Forecast Valid:
6pm EDT Sep 10, 2026-6pm EDT Sep 17, 2026
 
Forecast Discussion
 
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Additional Resources

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation