County Forecast for Big Stone City , SD
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251800-
Grant-
Including the city of Milbank
521 AM CDT Sun Oct 25 2026

Today   Cloudy. A chance of rain this afternoon. Cooler with highs in the upper 40s. North winds 5 to 10 mph. Chance of rain 50 percent.
Tonight   Rain, mainly in the evening. Lows in the mid 30s. Northeast winds 5 to 10 mph. Chance of rain 90 percent.
Monday   Rain. Highs in the lower 40s. Northeast winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.
Monday night   Rain. Lows in the mid 30s. East winds 10 to 15 mph with gusts up to 30 mph. Chance of rain near 100 percent.
Tuesday   Mostly cloudy with a slight chance of rain in the morning, then partly sunny in the afternoon. Not as cool with highs in the mid 50s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Tuesday night   Mostly cloudy with a slight chance of rain in the evening, then partly cloudy after midnight. Lows in the lower 40s. Chance of rain 20 percent.
Wednesday   Mostly sunny. Highs in the upper 50s.
Wednesday night   Partly cloudy in the evening, then clearing. Lows in the upper 30s.
Thursday   Mostly sunny. Highs in the upper 50s.
Thursday night and friday   Mostly cloudy with a 20 percent chance of rain. Lows in the mid 40s. Highs in the lower 60s.
Friday night   Mostly cloudy. A slight chance of rain in the evening, then a chance of rain after midnight. Lows in the mid 40s. Chance of rain 30 percent.
Saturday   Mostly cloudy with a 50 percent chance of rain. Highs in the upper 50s.
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Bryce Anderson – DTN Meteorologist
Plains, Upper Midwest Continue With Showers This Weekend
Posted at 12:24PM Fri Oct 23, 2026 CDT
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