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


Lake Herman, SD Weather Forecast Date: 955 PM CDT Thu Aug 13 2026
Weather forecast for Lake Herman, SD
| Tonight Lo: 61°F Lo: 16°C |
Tonight... Mostly cloudy. Lows in the lower 60s. East winds 15 to 20 mph, diminishing to 5 to 10 mph after midnight. |
| Fri Hi: 75°FHi: 24°C Lo: 61°F Lo: 16°C |
Friday... Mostly cloudy. A slight chance of showers in the morning, then a chance of showers in the afternoon. Humid with highs in the mid 70s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50%. |
| Sat Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Saturday... Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Northwest winds 5 to 10 mph. Chance of rain 50%. |
| Sun Hi: 75°FHi: 24°C Lo: 55°F Lo: 13°C |
Sunday... Mostly sunny. Highs in the mid 70s. |
| Mon Hi: 79°FHi: 26°C Lo: 60°F Lo: 16°C |
Monday... Mostly sunny. A chance of showers in the afternoon. Highs in the upper 70s. Chance of rain 30%. |
| Tue Hi: 79°FHi: 26°C Lo: 59°F Lo: 15°C |
Tuesday... Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 40%. |
| Wed Hi: 75°FHi: 24°C Lo: 59°F Lo: 15°C |
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s. |
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