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Round Lake Weather Forecast
Round Lake, SD Weather Forecast Date: 1122 PM CDT Wed Sep 16 2026
Weather forecast for Round Lake, SD
Tonight Lo: 55°F Lo: 13°C |
Tonight... Mostly cloudy. Patchy fog. Near steady temperature in the mid 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph. |
| Thu Hi: 71°FHi: 22°C Lo: 55°F Lo: 13°C |
Thursday... Patchy fog in the morning. Partly sunny. Highs in the lower 70s. Northeast winds 5 to 10 mph. |
Fri Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Friday... Showers. Highs in the mid 60s. East winds 15 to 20 mph with gusts up to 30 mph. Chance of rain near 100%. |
Sat Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Saturday... Mostly cloudy. Highs in the upper 60s. Lows in the lower 50s. |
Sun Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Sunday... Mostly cloudy. A chance of showers in the afternoon. Highs in the upper 60s. Chance of rain 30%. |
| Mon Hi: 65°FHi: 18°C Lo: 51°F Lo: 11°C |
Monday... Mostly cloudy with a 50% chance of showers. Lows in the lower 50s. Highs in the mid 60s. |
| Tue Hi: 69°FHi: 21°C Lo: 51°F Lo: 11°C |
Tuesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the upper 60s. |
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