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


Lost Lake, SD Weather Forecast Date: 437 AM CDT Mon Aug 03 2026
Weather forecast for Lost Lake, SD
| Today Hi: 85°FHi: 29°C Lo: 55°F Lo: 13°C |
Today... Partly sunny. A slight chance of thunderstorms this morning. Highs in the mid 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 20%. |
| Tue Hi: 75°FHi: 24°C Lo: 51°F Lo: 11°C |
Tuesday... Patchy smoke in the morning. Mostly sunny. Not as warm. Less humid with highs in the mid 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph. |
| Wed Hi: 79°FHi: 26°C Lo: 65°F Lo: 18°C |
Wednesday... Mostly sunny. Highs in the upper 70s. Southwest winds 10 to 15 mph. |
| Thu Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Thursday... Mostly clear. Highs in the lower 80s. Lows in the mid 60s. |
| Fri Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Friday... Mostly clear. Highs in the lower 80s. Lows in the mid 60s. |
| Fri Hi: 81°FHi: 27°C Lo: 65°F Lo: 18°C |
Friday... Mostly clear. Highs in the lower 80s. Lows in the mid 60s. |
| Sat Hi: 85°FHi: 29°C Lo: 65°F Lo: 18°C |
Saturday... Partly sunny. Highs in the mid 80s. |
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