Weather WorldLegion Lake, SD 7-Day Weather Forecast
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Legion Lake Weather Forecast
Legion Lake, SD Weather Forecast Date: 817 PM MDT Tue Aug 18 2026
Weather forecast for Legion Lake, SD
Tonight Lo: 51°F Lo: 11°C |
Tonight... Partly cloudy. A chance of showers and thunderstorms this evening. Lows in the lower 50s. West winds 5 to 10 mph. Chance of rain 50%. |
Wed Hi: 80°FHi: 27°C Lo: 55°F Lo: 13°C |
Wednesday... Mostly sunny in the morning, then becoming partly cloudy. Highs around 80. Northwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. |
Thu Hi: 85°FHi: 29°C Lo: 59°F Lo: 15°C |
Thursday... Sunny. Highs in the mid 80s. Northwest winds 5 to 10 mph. Gusts up to 20 mph in the afternoon. |
| Fri Hi: 85°FHi: 29°C Lo: 59°F Lo: 15°C |
Friday... Mostly sunny. Highs in the mid 80s. |
Sat Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Saturday... Partly cloudy. A slight chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 20%. |
| Sun Hi: 85°FHi: 29°C Lo: 60°F Lo: 16°C |
Sunday... Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20%. |
| Mon Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Monday... Partly cloudy with a slight chance of showers in the morning, then mostly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 30%. |
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