County Forecast for Big Stone City , SD
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221700-
Grant-
Including the city of Milbank
421 AM CDT Thu Oct 22 2026

Today   Mostly sunny. Warmer with highs in the upper 70s. South winds 5 to 10 mph.
Tonight   Mostly clear in the evening, then becoming partly cloudy. Not as cool with lows in the upper 50s. South winds 10 to 15 mph with gusts up to 25 mph.
Friday   Partly sunny with a 20 percent chance of showers. Highs in the mid 70s. South winds 15 to 20 mph with gusts up to 40 mph.
Friday night   Mostly cloudy. A slight chance of showers after midnight. Breezy with lows in the upper 50s. South winds 15 to 25 mph with gusts up to 40 mph. Chance of rain 20 percent.
Saturday   Partly sunny with a 40 percent chance of showers. Breezy and not as warm with highs in the mid 60s. Temperature falling into the upper 50s in the afternoon. Southwest winds 15 to 25 mph, becoming northwest 10 to 15 mph in the afternoon.
Saturday night   Mostly cloudy. Much cooler with lows around 40.
Sunday   Mostly cloudy. A slight chance of rain in the morning, then a chance of rain in the afternoon. Much cooler with highs in the upper 40s. Chance of rain 40 percent.
Sunday night   Rain likely. Lows in the upper 30s. Chance of rain 70 percent.
Monday   Mostly cloudy with a 50 percent chance of rain. Highs in the upper 40s.
Monday night   Mostly cloudy with a chance of rain. A slight chance of snow after midnight. Lows in the mid 30s. Chance of precipitation 30 percent.
Tuesday   Mostly cloudy in the morning, then becoming partly sunny. A slight chance of snow in the morning. A slight chance of rain. Highs in the upper 40s. Chance of precipitation 20 percent.
Tuesday night   Mostly cloudy with a 20 percent chance of rain. Lows in the upper 30s.
Wednesday   Partly sunny. A slight chance of rain in the morning. Highs in the mid 50s. Chance of rain 20 percent.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Front Slipping Southeast Friday
Posted at 5:34AM Fri Oct 2, 2026 CDT
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