County Forecast for Big Stone City , SD
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220000-
Grant-
Including the city of Milbank
1132 AM CDT Thu May 21 2026

Rest of today   Partly sunny. Highs in the mid 60s. Southeast winds 15 to 20 mph.
Tonight   Mostly cloudy. Lows in the lower 40s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Friday   Showers. A slight chance of thunderstorms in the afternoon. Cooler with highs in the mid 50s. Southeast winds 15 to 20 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Friday night   Cloudy. Showers, mainly in the evening. Lows in the lower 40s. Southeast winds 10 to 15 mph with gusts up to 30 mph, becoming southwest 5 to 10 mph with gusts up to 20 mph after midnight. Chance of rain 80 percent.
Saturday   Mostly cloudy in the morning, then becoming partly sunny. Warmer with highs in the mid 60s. West winds 5 to 10 mph with gusts up to 20 mph.
Saturday night   Partly cloudy. Lows in the mid 40s.
Sunday and sunday night   Mostly clear. Highs in the upper 70s. Lows in the lower 50s.
Memorial day and monday night   Mostly clear. Highs in the mid 80s. Lows in the upper 50s.
Tuesday and tuesday night   Partly cloudy. Highs in the upper 80s. Lows in the upper 50s.
Wednesday   Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Showers Hitting Drought Areas Thursday
Posted at 5:33AM Thu May 21, 2026 CDT
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