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

Hazardous Weather Conditions

Current conditions at

Pittsburgh/Butler Regional Airport (KBTP)

Lat: 40.78°NLon: 79.96°WElev: 1248ft.

Thunderstorm Heavy Rain

72°F

22°C

Humidity NA
Wind Speed Vrbl 6 mph
Barometer 29.95 in (1013.9 mb)
Dewpoint N/A
Visibility 3.00 mi
Last update 13 Aug 9:56 pm EDT
Extended Forecast for

Mc Grann PA

  • Tonight

    Tonight: Scattered showers and thunderstorms, mainly before midnight. Areas of fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.

    Low: 66 °F

    Scattered
    T-storms then
    Isolated
    T-storms and
    Areas Fog

  • Thursday

    Thursday: Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon.

    High: 87 °F

    Areas Fog
    then Sunny

  • Thursday Night

    Thursday Night: Patchy fog after 4am. Otherwise, mostly clear, with a low around 60. Light north wind.

    Low: 60 °F

    Mostly Clear
    then Patchy
    Fog

  • Friday

    Friday: Patchy fog before 8am. Otherwise, sunny, with a high near 89. Calm wind.

    High: 89 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Mostly clear, with a low around 63. Calm wind.

    Low: 63 °F

    Mostly Clear

  • Saturday

    Saturday: Sunny and hot, with a high near 91.

    High: 91 °F

    Hot

  • Saturday Night

    Saturday Night: Mostly clear, with a low around 66.

    Low: 66 °F

    Mostly Clear

  • Sunday

    Sunday: A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Chance of precipitation is 30%.

    High: 90 °F

    Mostly Sunny
    then Chance
    T-storms

  • Sunday Night

    Sunday Night: A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.

    Low: 65 °F

    Chance
    T-storms then
    Partly Cloudy

Detailed Forecast

Tonight
Scattered showers and thunderstorms, mainly before midnight. Areas of fog after 2am. Otherwise, mostly cloudy, with a low around 66. Calm wind. Chance of precipitation is 50%. New rainfall amounts between a tenth and quarter of an inch, except higher amounts possible in thunderstorms.
Thursday
Areas of fog before 9am. Otherwise, mostly cloudy, then gradually becoming sunny, with a high near 87. Calm wind becoming north around 6 mph in the afternoon.
Thursday Night
Patchy fog after 4am. Otherwise, mostly clear, with a low around 60. Light north wind.
Friday
Patchy fog before 8am. Otherwise, sunny, with a high near 89. Calm wind.
Friday Night
Mostly clear, with a low around 63. Calm wind.
Saturday
Sunny and hot, with a high near 91.
Saturday Night
Mostly clear, with a low around 66.
Sunday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Chance of precipitation is 30%.
Sunday Night
A chance of showers and thunderstorms before 8pm. Partly cloudy, with a low around 65. Chance of precipitation is 30%.
Monday
Mostly sunny, with a high near 88.
Monday Night
Partly cloudy, with a low around 64.
Tuesday
A chance of showers and thunderstorms. Mostly sunny, with a high near 88. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 63. Chance of precipitation is 30%.
Wednesday
A chance of showers. Mostly sunny, with a high near 81. Chance of precipitation is 30%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Mc Grann PA
 40.77°N 79.53°W (Elev. 801 ft)
Last Update:
10:34 pm EDT Aug 13, 2025
Forecast Valid:
10pm EDT Aug 13, 2025-6pm EDT Aug 20, 2025
 
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Additional Resources

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Hourly Weather Forecast

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High Temperature

National Digital Forecast Database Weather Element Forecast

Chance of Precipitation