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Marvin, SD Weather Forecast
Marvin, SD Weather Forecast Date: 437 PM CDT Sat Aug 01 2026
The area/counties/county of: Grant, including the city of Milbank.or toggle through each period.
Tonight... Partly cloudy. Lows around 60. West winds around 5 mph, becoming south after midnight.
Sunday... Partly sunny. Humid with highs in the lower 80s. South winds 10 to 15 mph with gusts up to 30 mph.
Sunday Night... Partly cloudy. Humid with lows in the mid 60s. South winds 15 to 20 mph with gusts up to 30 mph.
Monday... Partly sunny. A slight chance of showers in the morning. Humid with highs in the lower 80s. South winds 15 to 20 mph with gusts up to 35 mph. Chance of rain 20%.
Monday Night... Showers likely with a slight chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the upper 50s. Southwest winds 10 to 15 mph, becoming northwest after midnight. Gusts up to 30 mph. Chance of rain 60%.
Tuesday... Partly cloudy. Highs in the mid 70s. Lows in the lower 50s.
Wednesday... Partly cloudy. Highs in the mid 70s. Lows in the lower 50s.
Wednesday Night... Mostly clear. Lows in the upper 50s. Highs in the upper 70s.
Thursday... Mostly clear. Lows in the upper 50s. Highs in the upper 70s.
Thursday Night... Mostly clear. A 20% chance of thunderstorms. Lows in the lower 60s. Highs in the lower 80s.
Friday... Mostly clear. A 20% chance of thunderstorms. Lows in the lower 60s. Highs in the lower 80s.
Friday Night... Partly cloudy. A 20% chance of thunderstorms. Lows in the lower 60s. Highs around 80.
POP = Probability of Precipitation
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