Weather World
St. John School, PA 7-Day Night Weather Forecast
Quick Weather Clicks
Settings
Sun & Moon
Weather Quote O' the Day
St. John School, PA Weather Forecast
St. John School, PA Weather Forecast Date: 802 AM EDT Sat Aug 22 2026
The area/counties/county of: Mercer, including the cities of: Sharon, Hermitage, and Grove City.or toggle through each period.
Today... Mostly sunny this morning, then partly sunny with showers with thunderstorms likely this afternoon. Highs around 80. South winds 5 to 10 mph. Chance of rain 80%.
Tonight... Considerable cloudiness. Showers with thunderstorms likely in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. South winds 5 to 10 mph, becoming southwest after midnight. Chance of rain 90%.
Sunday... Showers likely. A slight chance of thunderstorms in the afternoon. Highs in the lower 70s. West winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70%.
Sunday Night... Mostly cloudy. Showers likely with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the lower 50s. West winds 5 to 10 mph. Chance of rain 70%.
Monday... Partly sunny in the morning, then becoming partly cloudy. Unseasonably cool with highs in the upper 60s. West winds 10 to 15 mph with gusts up to 25 mph.
Monday Night... Mainly clear. Lows in the lower 50s.
Tuesday... Mostly sunny. Highs in the mid 70s.
Tuesday Night... Mainly clear. Lows in the mid 50s.
Wednesday... Partly cloudy. Highs in the upper 70s.
Wednesday Night... Partly cloudy. Lows in the upper 50s.
Thursday... Partly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40%.
Thursday Night... A chance of thunderstorms in the evening. Mostly cloudy with a chance of showers. Lows in the lower 60s. Chance of rain 40%.
POP = Probability of Precipitation
St. John School Radar Loop
Use the map search tool if you want to place a location marker on the radar map...