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

Beaver County Airport (KBVI)

Lat: 40.77°NLon: 80.38°WElev: 1266ft.

Overcast

78°F

26°C

Humidity 51%
Wind Speed Calm
Barometer 30.10 in
Dewpoint 58°F (14°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 21 Aug 2:55 pm EDT
Extended Forecast for

4 Miles SW Portersville PA

  • This Afternoon

    This Afternoon: Sunny, with a high near 79. Light east wind.

    High: 79 °F

    Sunny

  • Tonight

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

    Low: 57 °F

    Clear

  • Saturday

    Saturday: A chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 81. Light and variable 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: 81 °F

    Sunny then
    Chance
    T-storms

  • Saturday Night

    Saturday Night: Showers and thunderstorms, mainly before 1am. Low around 58. South wind around 5 mph becoming southwest 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
    Chance
    Showers

  • Sunday

    Sunday: A chance of showers, with thunderstorms also possible after 11am. Partly sunny, with a high near 73. West wind 7 to 10 mph, with gusts as high as 20 mph. Chance of precipitation is 50%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 73 °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 1am and 3am. Otherwise, partly cloudy, with a low around 54. Chance of precipitation is 20%.

    Low: 54 °F

    Slight Chance
    T-storms and
    Patchy Fog

  • Monday

    Monday: Mostly sunny, with a high near 72.

    High: 72 °F

    Mostly Sunny

  • Monday Night

    Monday Night: Mostly clear, with a low around 53.

    Low: 53 °F

    Mostly Clear

  • Tuesday

    Tuesday: Sunny, with a high near 77.

    High: 77 °F

    Sunny

Detailed Forecast

This Afternoon
Sunny, with a high near 79. Light east wind.
Tonight
Clear, with a low around 57. Light east wind.
Saturday
A chance of showers and thunderstorms, mainly after 4pm. Increasing clouds, with a high near 81. Light and variable 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 5 mph becoming southwest 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 73. West wind 7 to 10 mph, with gusts as high as 20 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 1am and 3am. Otherwise, partly cloudy, with a low around 54. Chance of precipitation is 20%.
Monday
Mostly sunny, with a high near 72.
Monday Night
Mostly clear, with a low around 53.
Tuesday
Sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 55.
Wednesday
Partly sunny, with a high near 79.
Wednesday Night
Mostly cloudy, with a low around 60.
Thursday
A chance of showers. Partly sunny, with a high near 81. Chance of precipitation is 40%.
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Forecast Area
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles SW Portersville PA
 40.89°N 80.18°W (Elev. 1296 ft)
Last Update:
2:21 pm EDT Aug 21, 2026
Forecast Valid:
3pm EDT Aug 21, 2026-6pm EDT Aug 27, 2026
 
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Additional Resources

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Chance of Precipitation