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Keystone Weather Forecast
Keystone, IN Weather Forecast Date: 928 PM EDT Fri Sep 04 2026
Weather forecast for Keystone, IN
Tonight Lo: 70°F Lo: 21°C |
Tonight... Mostly clear late this evening, then becoming partly cloudy. A slight chance of showers and thunderstorms late this evening, then a chance of showers and thunderstorms. Lows around 70. West winds around 5 mph. Chance of rain 50%. |
Sat Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Saturday... Mostly cloudy with a chance of showers and thunderstorms in the morning, then partly cloudy with a slight chance of showers in the afternoon. Humid with highs in the mid 80s. Northwest winds around 5 mph. Chance of rain 40%. |
Sun Hi: 80°FHi: 27°C Lo: 55°F Lo: 13°C |
Sunday... Mostly sunny. Highs around 80. Northeast winds around 5 mph. |
| Labor Day Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Labor Day... Mostly sunny. Highs in the lower 80s. |
| Tue Hi: 85°FHi: 29°C Lo: 69°F Lo: 21°C |
Tuesday... Mostly sunny. Highs in the mid 80s. |
| Wed Hi: 89°FHi: 32°C Lo: 69°F Lo: 21°C |
Wednesday... Mostly sunny in the morning, then partly cloudy with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20%. Heat index values in the mid 90s in the afternoon. |
| Thu Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Thursday... Partly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then a slight chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 30%. |
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