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Keystone Lake, PA 7-Day Weather Forecast
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Keystone Lake Weather Forecast
Keystone Lake, PA Weather Forecast Date: 638 PM EDT Sat Aug 15 2026
Weather forecast for Keystone Lake, PA
Tonight Lo: 69°F Lo: 21°C |
Tonight... Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Some thunderstorms May produce heavy rainfall after midnight. Lows in the upper 60s. Southeast winds around 5 mph. Chance of rain 50%. |
Sun Hi: 81°FHi: 27°C Lo: 69°F Lo: 21°C |
Sunday... Showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Some thunderstorms May produce heavy rainfall in the morning. Some thunderstorms May produce heavy rainfall in the afternoon. Humid with highs in the lower 80s. Southwest winds 5 to 10 mph with gusts up to 20 mph. Chance of rain near 100%. |
| Mon Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Monday... Showers likely. A chance of thunderstorms in the afternoon. Humid with highs in the lower 80s. West winds 5 to 10 mph. Chance of rain 70%. |
Tue Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Tuesday... Areas of fog in the morning. Mostly sunny. Highs in the upper 70s. |
| Wed Hi: 81°FHi: 27°C Lo: 61°F Lo: 16°C |
Wednesday... Mostly sunny. A chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 40%. |
Thu Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Thursday... Partly sunny. A chance of showers in the afternoon. Highs in the mid 70s. Chance of rain 50%. |
Fri Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Friday... Partly cloudy. Highs in the mid 70s. |
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