| NWS Forecast for: Butler County Issued by: National Weather Service Pittsburgh, PA Last Update: 257 AM EDT Wed Sep 2 2026 |  |
Overnight: Mostly cloudy with a chance of showers and thunderstorms. Patchy fog. Warm. Near steady temperature in the lower 70s. Southwest winds around 5 mph. Chance of rain 50 percent. Today: Partly sunny with a chance of showers and thunderstorms in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Hot with highs around 90. Southwest winds 5 to 10 mph. Chance of rain 50 percent. Heat index values up to 101 in the afternoon. Tonight: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers. A slight chance of thunderstorms in the evening, then a chance of thunderstorms after midnight. Warm with lows around 70. Southwest winds around 5 mph. Chance of rain 50 percent. Thursday: Partly sunny with a chance of showers and thunderstorms. Unseasonably warm. Humid with highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 50 percent. Heat index values in the upper 90s in the afternoon. Thursday Night: A chance of thunderstorms in the evening. Showers likely. Warm with lows in the upper 60s. Northwest winds 5 to 10 mph in the evening, becoming light and variable. Chance of rain 70 percent. Friday: Showers likely. A chance of thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 70 percent. Friday Night: Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the lower 60s. Chance of rain 70 percent. Saturday: Partly cloudy. Highs in the upper 70s. Saturday Night: Mainly clear. Lows in the mid 50s. Sunday: Mostly sunny. Highs in the upper 70s. Sunday Night: Mainly clear. Lows in the mid 50s. Labor Day: Partly cloudy. Highs around 80. Monday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s. Tuesday: Partly sunny. Highs around 80. | |
| Zone Forecast: Butler County | |
Visit your local NWS office at: https://www.weather.gov/pbz/ |