County Forecast for Big Stone City , SD
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191700-
Grant-
Including the city of Milbank
446 AM CDT Wed Aug 19 2026

Today   Partly sunny. Highs in the upper 70s. South winds around 5 mph, becoming west around 5 mph this afternoon.
Tonight   Mostly clear in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Southwest winds 10 to 15 mph. Chance of rain 20 percent.
Thursday   Partly sunny. A slight chance of thunderstorms in the morning. Highs in the lower 80s. Southwest winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Thursday night   Mostly clear. Lows around 60. Northwest winds 5 to 10 mph.
Friday   Mostly sunny. Highs in the lower 80s. Northwest winds around 5 mph.
Friday night and saturday   Mostly clear. Lows in the upper 50s. Highs in the upper 70s.
Saturday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
Sunday   Partly sunny. Highs in the upper 70s.
Sunday night   Partly cloudy with a 20 percent chance of thunderstorms. Lows around 60.
Monday   Partly sunny. Highs in the lower 80s.
Monday night   Mostly clear with a slight chance of thunderstorms in the evening, then partly cloudy with a slight chance of showers after midnight. Lows in the lower 60s. Chance of rain 20 percent.
Tuesday   Mostly sunny. Highs in the lower 80s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Front Continues to Push Through Corn Belt Wednesday
Posted at 11:59AM Tue Aug 18, 2026 CDT
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