Crystal Lake, SD 7-Day Weather Forecast
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Crystal Lake Weather Forecast


Crystal Lake, SD Weather Forecast Date: 637 PM CDT Thu Aug 06 2026
Weather forecast for Crystal Lake, SD
| Tonight Lo: 59°F Lo: 15°C |
Tonight... Partly cloudy. Lows in the upper 50s. South winds 15 to 20 mph, becoming southwest after midnight. |
| Fri Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Friday... Partly sunny. Highs in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. |
| Sat Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Saturday... Mostly sunny. Highs in the mid 80s. South winds 5 to 10 mph. |
| Sun Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Sunday... Partly sunny. A slight chance of showers in the afternoon. Highs in the lower 80s. Chance of rain 20%. |
| Mon Hi: 80°FHi: 27°C Lo: 59°F Lo: 15°C |
Monday... Partly sunny. Highs around 80. |
| Tue Hi: 80°FHi: 27°C Lo: 60°F Lo: 16°C |
Tuesday... Partly sunny. Highs around 80. |
| Wed Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Wednesday... Partly sunny. Highs in the lower 80s. |
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