County Forecast for Big Stone City , SD
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150000-
Grant-
Including the city of Milbank
1137 AM CDT Thu May 14 2026

This afternoon   Partly sunny. A slight chance of thunderstorms early. Patchy blowing dust. Windy with highs in the lower 80s. South winds 20 to 30 mph with gusts up to 50 mph. Chance of rain 20 percent.
Tonight   Partly cloudy in the evening, then becoming mostly clear. Lows around 50. West winds 15 to 20 mph. Gusts up to 35 mph in the evening.
Friday   Sunny. Highs in the upper 70s. West winds 15 to 20 mph with gusts up to 35 mph.
Friday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s. West winds 10 to 15 mph. Gusts up to 30 mph in the evening.
Saturday   Mostly sunny. Highs in the lower 70s. Northwest winds 5 to 10 mph with gusts up to 20 mph.
Saturday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 40s.
Sunday   Mostly cloudy. A chance of showers with a slight chance of thunderstorms in the morning, then showers with a chance of thunderstorms in the afternoon. Breezy with highs in the upper 60s. Chance of rain 80 percent.
Sunday night   Showers with a chance of thunderstorms in the evening, then showers likely after midnight. Lows in the upper 40s. Chance of rain 90 percent.
Monday   Mostly cloudy with a 50 percent chance of showers. Breezy with highs in the upper 60s.
Monday night   Partly cloudy. A chance of showers, mainly in the evening. Breezy with lows in the lower 40s. Chance of rain 50 percent.
Tuesday   Partly sunny with a 20 percent chance of showers. Breezy with highs around 60.
Tuesday night and wednesday   Partly cloudy. Lows in the upper 30s. Highs in the mid 60s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
System Continues Through Canadian Prairies Thursday
Posted at 5:34AM Thu May 14, 2026 CDT
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