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Island Lake, SD 7-Day Weather Forecast
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Island Lake Weather Forecast
Island Lake, SD Weather Forecast Date: 945 PM CDT Thu Aug 20 2026
Weather forecast for Island Lake, SD
Tonight Lo: 61°F Lo: 16°C |
Tonight... Partly cloudy with showers and scattered thunderstorms this evening, then mostly clear after midnight. Lows in the lower 60s. South winds 15 to 20 mph with gusts up to 30 mph, becoming west 5 to 10 mph after midnight. Chance of rain 80%. |
Fri Hi: 85°FHi: 29°C Lo: 61°F Lo: 16°C |
Friday... Sunny. Highs in the mid 80s. North winds 5 to 10 mph. |
| Sat Hi: 81°FHi: 27°C Lo: 55°F Lo: 13°C |
Saturday... Sunny. Highs in the lower 80s. North winds 5 to 10 mph. |
Sun Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Sunday... Partly sunny. A slight chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 20%. |
Mon Hi: 80°FHi: 27°C Lo: 61°F Lo: 16°C |
Monday... Mostly cloudy in the morning, then clearing. Highs around 80. |
Tue Hi: 81°FHi: 27°C Lo: 60°F Lo: 16°C |
Tuesday... Partly sunny. Highs in the lower 80s. |
| Wed Hi: 81°FHi: 27°C Lo: 59°F Lo: 15°C |
Wednesday... Mostly sunny. Highs in the lower 80s. |
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