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.

Light Rain

62°F

17°C

Humidity 100%
Wind Speed S 7 mph
Barometer 29.98 in (1015.9 mb)
Dewpoint 62°F (17°C)
Visibility 10.00 mi
Last update 16 May 5:56 pm EDT
Extended Forecast for

Harmony PA

  • Tonight

    Tonight: Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 60. Southwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.

    Low: 60 °F

    T-storms
    Likely then
    Mostly Cloudy

  • Sunday

    Sunday: A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.

    High: 83 °F

    Mostly Cloudy
    then Slight
    Chance
    T-storms

  • Sunday Night

    Sunday Night: Partly cloudy, with a low around 64. Calm wind.

    Low: 64 °F

    Partly Cloudy

  • Monday

    Monday: Sunny and hot, with a high near 91. Light south wind becoming southwest 5 to 9 mph in the morning.

    High: 91 °F

    Hot

  • Monday Night

    Monday Night: Partly cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening.

    Low: 68 °F

    Partly Cloudy

  • Tuesday

    Tuesday: 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

  • Tuesday Night

    Tuesday Night: A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.

    Low: 69 °F

    Chance
    T-storms then
    Chance
    Showers

  • Wednesday

    Wednesday: Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 90%.

    High: 82 °F

    Showers

  • Wednesday Night

    Wednesday Night: Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.

    Low: 50 °F

    Showers
    Likely then
    Mostly Cloudy

Detailed Forecast

Tonight
Showers and thunderstorms likely before 8pm, then a chance of showers between 8pm and 9pm. Mostly cloudy, with a low around 60. Southwest wind 5 to 9 mph becoming calm after midnight. Winds could gust as high as 21 mph. Chance of precipitation is 60%. New precipitation amounts of less than a tenth of an inch, except higher amounts possible in thunderstorms.
Sunday
A slight chance of showers and thunderstorms after 2pm. Partly sunny, with a high near 83. Calm wind becoming southwest around 6 mph in the afternoon. Chance of precipitation is 20%.
Sunday Night
Partly cloudy, with a low around 64. Calm wind.
Monday
Sunny and hot, with a high near 91. Light south wind becoming southwest 5 to 9 mph in the morning.
Monday Night
Partly cloudy, with a low around 68. South wind around 5 mph becoming calm in the evening.
Tuesday
A chance of showers and thunderstorms after 2pm. Mostly sunny and hot, with a high near 90. Chance of precipitation is 30%.
Tuesday Night
A chance of showers and thunderstorms. Mostly cloudy, with a low around 69. Chance of precipitation is 50%.
Wednesday
Showers, with thunderstorms also possible after 2pm. High near 82. Chance of precipitation is 90%.
Wednesday Night
Showers likely and possibly a thunderstorm before 8pm. Mostly cloudy, with a low around 50. Chance of precipitation is 60%.
Thursday
Partly sunny, with a high near 68.
Thursday Night
Mostly cloudy, with a low around 49.
Friday
Mostly cloudy, with a high near 71.
Friday Night
A chance of showers. Mostly cloudy, with a low around 53. Chance of precipitation is 30%.
Saturday
A chance of showers. Partly sunny, with a high near 72. Chance of precipitation is 40%.
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ABOUT THIS FORECAST

 
Point Forecast:
Harmony PA
 40.8°N 80.13°W (Elev. 968 ft)
Last Update:
2:21 pm EDT May 16, 2026
Forecast Valid:
6pm EDT May 16, 2026-6pm EDT May 23, 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