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

74°F

23°C

Humidity 48%
Wind Speed NE 6 mph
Barometer 30.14 in (1020.8 mb)
Dewpoint 53°F (12°C)
Visibility 10.00 mi
Last update 21 Aug 12:56 pm EDT
Extended Forecast for

Renfrew PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 80. East wind 3 to 5 mph.

    High: 80 °F

    Sunny

  • Tonight

    Tonight: Mostly clear, with a low around 57. Light east wind.

    Low: 57 °F

    Mostly Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 82. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 82 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly before 1am. Low around 58. South wind around 6 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.

    Low: 58 °F

    T-storms then
    Showers
    Likely

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 74. West wind 7 to 11 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 74 °F

    Chance
    Showers then
    Chance
    T-storms

  • Sunday Night

    Sunday Night: A slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 53. Chance of precipitation is 20%.

    Low: 53 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 73.

    High: 73 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 52.

    Low: 52 °F

    Mostly Clear

  • Tuesday

    Tuesday: Mostly sunny, with a high near 78.

    High: 78 °F

    Mostly Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 80. East wind 3 to 5 mph.
Tonight
Mostly clear, with a low around 57. Light east wind.
Saturday
A chance of showers and thunderstorms, mainly after 3pm. Increasing clouds, with a high near 82. Calm wind becoming south around 6 mph in the morning. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers and thunderstorms, mainly before 1am. Low around 58. South wind around 6 mph becoming west after midnight. Chance of precipitation is 80%. New rainfall amounts between a quarter and half of an inch possible.
Sunday
A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 74. West wind 7 to 11 mph. 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 slight chance of showers and thunderstorms before 8pm, then a slight chance of showers between 8pm and 2am. Patchy fog between 2am and 3am. Otherwise, partly cloudy, with a low around 53. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 73.
Monday Night
Mostly clear, with a low around 52.
Tuesday
Mostly sunny, with a high near 78.
Tuesday Night
Partly cloudy, with a low around 54.
Wednesday
Partly sunny, with a high near 80.
Wednesday Night
Mostly cloudy, with a low around 59.
Thursday
A chance of showers. Partly sunny, with a high near 82. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
Renfrew PA
 40.81°N 79.96°W (Elev. 997 ft)
Last Update:
12:31 pm EDT Aug 21, 2026
Forecast Valid:
1pm EDT Aug 21, 2026-6pm EDT Aug 27, 2026
 
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Additional Resources

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High Temperature

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Chance of Precipitation