County Forecast for Big Stone City , SD
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130100-
Grant-
Including the city of Milbank
1222 PM CDT Sat Sep 12 2026

This afternoon   Partly sunny. Not as warm with highs in the upper 60s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Tonight   Mostly cloudy. Lows in the upper 40s. Northwest winds 5 to 10 mph.
Sunday   Mostly cloudy with a slight chance of showers in the morning, then mostly sunny in the afternoon. Highs in the upper 60s. Northeast winds around 5 mph. Chance of rain 20 percent.
Sunday night   Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Lows in the lower 50s. Southeast winds 10 to 15 mph. Gusts up to 30 mph after midnight. Chance of rain 40 percent.
Monday   Showers with a chance of thunderstorms in the morning, then showers likely with a slight chance of thunderstorms in the afternoon. Highs around 70. Southeast winds 15 to 20 mph with gusts up to 40 mph. Chance of rain near 100 percent.
Monday night   Partly cloudy in the evening, then clearing. Lows in the lower 50s.
Tuesday   Mostly sunny. Highs in the upper 60s.
Tuesday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 40s.
Wednesday and wednesday night   Mostly cloudy with a 20 percent chance of showers. Highs in the upper 60s. Lows in the lower 50s.
Thursday   Partly sunny. Highs in the lower 70s.
Thursday night and friday   Partly cloudy. A 30 percent chance of showers. Lows in the lower 50s. Highs in the lower 70s.
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Bryce Anderson – DTN Meteorologist
Front Pushing Through Midwest This Weekend
Posted at 12:14PM Fri Sep 11, 2026 CDT
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