Weather WorldOpal Lake, SD 7-Day Weather Forecast
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Opal Lake Weather Forecast
Opal Lake, SD Weather Forecast Date: 1128 AM MDT Sat Aug 08 2026
Weather forecast for Opal Lake, SD
Today Hi: 99°FHi: 37°C Lo: 59°F Lo: 15°C |
This Afternoon... Mostly sunny. Areas of smoke. Highs in the upper 90s. Southwest winds 10 to 15 mph with gusts up to 25 mph. |
Sun Hi: 89°FHi: 32°C Lo: 59°F Lo: 15°C |
Sunday... Partly cloudy in the morning, then clearing. Highs in the upper 80s. East winds 10 to 20 mph with gusts up to 30 mph. |
Mon Hi: 91°FHi: 33°C Lo: 60°F Lo: 16°C |
Monday... Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the lower 90s. Southeast winds 10 to 20 mph. Gusts up to 35 mph in the afternoon. Chance of rain 20%. |
| Tue Hi: 89°FHi: 32°C Lo: 59°F Lo: 15°C |
Tuesday... Partly cloudy in the morning, then mostly sunny with a slight chance of showers and thunderstorms in the afternoon. Highs in the upper 80s. Chance of rain 20%. |
| Wed Hi: 81°FHi: 27°C Lo: 55°F Lo: 13°C |
Wednesday... Partly cloudy. A slight chance of showers and thunderstorms in the morning, then a chance of showers and thunderstorms in the afternoon. Highs in the lower 80s. Chance of rain 50%. |
| Thu Hi: 75°FHi: 24°C Lo: 51°F Lo: 11°C |
Thursday... Mostly cloudy. A chance of showers in the morning, then showers likely with a chance of thunderstorms in the afternoon. Breezy with highs in the mid 70s. Chance of rain 60%. |
| Fri Hi: 71°FHi: 22°C |
Friday... Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Breezy with highs in the lower 70s. Chance of rain 50%. |
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