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Watts Lake, PA 7-Day Night Weather Forecast
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Watts Lake, PA Weather Forecast
Watts Lake, PA Weather Forecast Date: 223 PM EDT Tue Sep 01 2026
The area/counties/county of: Mercer, including the cities of: Sharon, Hermitage, and Grove City.or toggle through each period.
This Afternoon... Partly cloudy with a slight chance of showers and thunderstorms. Unseasonably warm. Near steady temperature in the upper 80s. West winds around 10 mph. Chance of rain 20%. Heat index values in the upper 90s.
Tonight... Partly cloudy in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Warm with lows in the lower 70s. Southwest winds 5 to 10 mph, becoming south after midnight. Chance of rain 40%.
Wednesday... Partly sunny in the morning, then becoming partly cloudy. A chance of thunderstorms. A chance of showers. Hot with highs in the lower 90s. Southwest winds 5 to 10 mph. Chance of rain 50%. Heat index values up to 100 in the afternoon.
Wednesday Night... Mostly cloudy in the evening, then becoming partly cloudy. A chance of showers and thunderstorms. Warm with lows in the lower 70s. South winds 5 to 10 mph. Chance of rain 50%.
Thursday... Partly sunny with a chance of thunderstorms. A chance of showers in the morning, then showers likely in the afternoon. Unseasonably warm. Humid with highs in the upper 80s. West winds 5 to 10 mph. Chance of rain 60%.
Thursday Night... Showers likely with a chance of thunderstorms. Warm with lows in the upper 60s. Chance of rain 70%.
Friday... Mostly cloudy with showers likely in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 70%.
Friday Night... Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the lower 60s. Chance of rain 50%.
Saturday... Partly sunny in the morning, then becoming partly cloudy. Highs in the upper 70s.
Saturday Night... Mainly clear. Lows in the upper 50s.
Sunday... Mostly sunny. Highs in the upper 70s.
Sunday Night... Mainly clear. Lows in the upper 50s.
POP = Probability of Precipitation
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