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.

A Few Clouds

77°F

25°C

Humidity 69%
Wind Speed SW 7 mph
Barometer 29.98 in (1015.2 mb)
Dewpoint 66°F (19°C)
Visibility 10.00 mi
Heat Index79°F (26°C)
Last update 19 Aug 6:56 pm EDT
Extended Forecast for

4 Miles W Karns City PA

  • Tonight

    Tonight: A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 59 °F

    Slight Chance
    T-storms then
    Chance
    Showers and
    Patchy Fog

  • Thursday

    Thursday: Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. Light northeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.

    High: 76 °F

    Showers
    Likely and
    Patchy Fog
    then Chance
    Showers

  • Thursday Night

    Thursday Night: Widespread dense fog, mainly between 1am and 5am. Otherwise, mostly clear, with a low around 53. Light northeast wind.

    Low: 53 °F

    Mostly Clear
    then Dense
    Fog

  • Friday

    Friday: Patchy fog before 7am. Otherwise, sunny, with a high near 79. Southeast wind 3 to 6 mph.

    High: 79 °F

    Patchy Fog
    then Sunny

  • Friday Night

    Friday Night: Partly cloudy, with a low around 58. Light east wind.

    Low: 58 °F

    Partly Cloudy

  • Saturday

    Saturday: A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    High: 79 °F

    Slight Chance
    T-storms then
    Showers
    Likely

  • Saturday Night

    Saturday Night: Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.

    Low: 58 °F

    Showers
    Likely then
    Chance
    T-storms

  • Sunday

    Sunday: A chance of showers after 8am. Partly sunny, with a high near 76. Chance of precipitation is 30%.

    High: 76 °F

    Chance
    Showers

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 53.

    Low: 53 °F

    Partly Cloudy

Detailed Forecast

Tonight
A slight chance of showers and thunderstorms before 2am, then a slight chance of showers between 2am and 5am, then a chance of showers and thunderstorms after 5am. Patchy fog after 2am. Otherwise, mostly cloudy, with a low around 59. Light and variable wind. Chance of precipitation is 30%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Thursday
Showers and thunderstorms likely before 10am, then a chance of showers between 10am and 11am, then a chance of showers and thunderstorms after 11am. Patchy fog before noon. Otherwise, cloudy, then gradually becoming mostly sunny, with a high near 76. Light northeast wind. Chance of precipitation is 70%. New rainfall amounts between a quarter and half of an inch possible.
Thursday Night
Widespread dense fog, mainly between 1am and 5am. Otherwise, mostly clear, with a low around 53. Light northeast wind.
Friday
Patchy fog before 7am. Otherwise, sunny, with a high near 79. Southeast wind 3 to 6 mph.
Friday Night
Partly cloudy, with a low around 58. Light east wind.
Saturday
A slight chance of showers before 11am, then a slight chance of showers and thunderstorms between 11am and 2pm, then showers likely and possibly a thunderstorm after 2pm. Partly sunny, with a high near 79. Chance of precipitation is 60%. New rainfall amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Saturday Night
Showers likely and possibly a thunderstorm before 8pm, then a chance of showers and thunderstorms between 8pm and 2am. Mostly cloudy, with a low around 58. Chance of precipitation is 60%.
Sunday
A chance of showers after 8am. Partly sunny, with a high near 76. Chance of precipitation is 30%.
Sunday Night
Partly cloudy, with a low around 53.
Monday
Mostly sunny, with a high near 75.
Monday Night
Partly cloudy, with a low around 53.
Tuesday
Mostly sunny, with a high near 77.
Tuesday Night
Partly cloudy, with a low around 56.
Wednesday
Partly sunny, with a high near 80.
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ABOUT THIS FORECAST

 
Point Forecast:
4 Miles W Karns City PA
 40.99°N 79.79°W (Elev. 1365 ft)
Last Update:
7:01 pm EDT Aug 19, 2026
Forecast Valid:
7pm EDT Aug 19, 2026-6pm EDT Aug 26, 2026
 
Forecast Discussion
 
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Additional Resources

Radar & Satellite Image

Link to Local Radar Data Link to Satellite Data

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