County Forecast for Big Stone City , SD
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250800-
Grant-
Including the city of Milbank
722 PM CDT Thu Sep 24 2026

Tonight   Cloudy with a slight chance of drizzle. Patchy fog. Near steady temperature around 60. South winds 5 to 10 mph.
Friday   Mostly cloudy. Patchy fog. Highs in the mid 60s. Southeast winds 5 to 10 mph with gusts up to 25 mph.
Friday night   Cloudy. Showers, a slight chance of thunderstorms and drizzle after midnight. Lows in the upper 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90 percent.
Saturday   Showers likely, mainly in the morning. Highs in the mid 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
Saturday night   Mostly cloudy. Lows in the upper 50s. Southeast winds 5 to 10 mph.
Sunday and sunday night   Mostly cloudy. Highs in the lower 70s. Lows in the upper 50s.
Monday   Mostly cloudy. A slight chance of showers in the afternoon. Highs around 70. Chance of rain 20 percent.
Monday night   A slight chance of thunderstorms. Showers. Lows in the upper 50s. Chance of rain 80 percent.
Tuesday   Showers likely, mainly in the morning. Near steady temperature around 60. Chance of rain 70 percent.
Tuesday night   Mostly cloudy in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the upper 40s.
Wednesday   Partly sunny with a 20 percent chance of showers. Highs in the lower 60s.
Wednesday night   Mostly clear in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows around 50.
Thursday   Partly sunny with a 20 percent chance of showers. Highs around 60.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Rain Continues in Plains, Western Midwest Friday
Posted at 12:06PM Thu Sep 24, 2026 CDT
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