POET Biorefining - Big Stone

	County Forecast for Big Stone City , SD

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312000-
Grant-
Including the city of Milbank
721 AM CDT Sat Oct 31 2026

Today   Mostly cloudy. Rain likely this morning. Patchy fog this morning. Highs in the upper 50s. Southeast winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.
Tonight   Mostly cloudy. A slight chance of rain after midnight. Lows in the lower 50s. South winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 20 percent.
Sunday   Mostly cloudy. A slight chance of rain in the morning. Highs in the lower 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.
Sunday night   Cloudy. Rain likely after midnight. Lows in the lower 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 70 percent.
Monday   A slight chance of thunderstorms in the morning. Rain. Highs in the upper 50s. Southeast winds 15 to 20 mph with gusts up to 35 mph. Chance of rain near 100 percent.
Monday night   Rain with a slight chance of thunderstorms. Windy with lows in the mid 40s. Chance of rain near 100 percent.
Tuesday   Becoming partly sunny in the afternoon. A slight chance of thunderstorms. Rain likely, mainly in the morning. Windy. Near steady temperature in the upper 40s. Chance of rain 70 percent.
Tuesday night   Mostly cloudy. A chance of rain with a slight chance of thunderstorms in the evening, then a slight chance of rain after midnight. Lows in the upper 30s. Chance of rain 50 percent.
Wednesday   Partly sunny with a 20 percent chance of rain. Highs in the upper 40s.
Wednesday night   Partly cloudy. Lows in the upper 30s.
Thursday through friday   Mostly cloudy. Highs in the upper 40s. Lows in the mid 30s.

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Bryce Anderson – DTN Meteorologist

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Showers Spreading Across US Ahead of Storm System This Weekend

Tropical moisture spreads east of the Rockies this weekend, bringing heavy rain ahead of next week's storm. » More DTN Weather Commentary

Posted at 12:03PM Fri Oct 30, 2026 CDT

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