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Grant County, SD Weather Forecast
Grant County, SD Weather Forecast Date: 317 PM CDT Sun Oct 11 2026
The area/counties/county of: Grant, including the city of Milbank.or toggle through each period.
Tonight... Mostly cloudy. Lows around 50. North winds 10 to 15 mph with gusts up to 25 mph.
Columbus Day... Mostly cloudy with a chance of showers in the morning, then partly sunny with a slight chance of thunderstorms in the afternoon. Highs in the upper 60s. North winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 30%.
Monday Night... Mostly cloudy. Lows in the mid 40s. Northwest winds 10 to 15 mph.
Tuesday... Partly sunny. Cooler with highs in the upper 50s. Northwest winds 10 to 15 mph.
Tuesday Night... Partly cloudy. Lows around 40. North winds 5 to 10 mph.
Wednesday... Mostly sunny. Highs around 60.
Wednesday Night... Mostly clear in the evening, then becoming partly cloudy. A 20% chance of showers. Lows in the lower 40s.
Thursday... Partly sunny. A chance of showers, mainly in the morning. Highs around 60. Chance of rain 30%.
Thursday Night... Partly cloudy. A slight chance of showers after midnight. Breezy with lows in the upper 30s. Chance of rain 20%.
Friday... Partly sunny and breezy. Highs in the lower 50s.
Friday Night... Mostly clear. Widespread frost through the day. Lows in the lower 30s. Highs in the upper 50s.
Saturday... Mostly clear. Widespread frost through the day. Lows in the lower 30s. Highs in the upper 50s.
Saturday Night... Mostly clear and breezy. Lows in the lower 40s. Highs in the upper 60s.
POP = Probability of Precipitation
Grant County Radar Loop
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