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Town of Keystone, SDKeystone, SD 7-Day Weather Forecast
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Keystone Weather Forecast
Keystone, SD Weather Forecast Date: 537 PM MST Fri Nov 06 2026
Weather forecast for Keystone, SD
Tonight Lo: 35°F Lo: 2°C |
Tonight... Clear. Lows in the mid 30s. West winds 5 to 10 mph. Gusts up to 20 mph after midnight. |
Sat Hi: 60°FHi: 16°C Lo: 35°F Lo: 2°C |
Saturday... Mostly sunny in the morning, then becoming partly cloudy. Highs around 60. Northwest winds 5 to 10 mph with gusts up to 20 mph. |
Sun Hi: 65°FHi: 18°C Lo: 40°F Lo: 4°C |
Sunday... Mostly sunny. Highs in the mid 60s. Southwest winds 5 to 10 mph with gusts up to 30 mph. |
| Mon Hi: 55°FHi: 13°C Lo: 39°F Lo: 4°C |
Monday... Sunny. Highs in the mid 50s. |
| Tue Hi: 59°FHi: 15°C Lo: 39°F Lo: 4°C |
Tuesday... Partly cloudy. Highs in the upper 50s. |
| Veterans Day Hi: 59°FHi: 15°C Lo: 39°F Lo: 4°C |
Veterans Day... Mostly sunny. Highs in the upper 50s. |
| Thu Hi: 61°FHi: 16°C Lo: 41°F Lo: 5°C |
Thursday... Mostly sunny. Highs in the lower 60s. |
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