County Forecast for Big Stone City , SD
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201100-
Grant-
Including the city of Milbank
1012 PM CDT Sun Jul 19 2026

Rest of tonight   Partly cloudy. A slight chance of thunderstorms late this evening, then a chance of thunderstorms. Lows in the lower 70s. South winds 15 to 20 mph. Chance of rain 40 percent.
Monday   Partly sunny. Hot with highs in the lower 90s. West winds 15 to 20 mph. Gusts up to 35 mph in the afternoon.
Monday night   Mostly clear. Lows in the mid 60s. Northwest winds 15 to 20 mph with gusts up to 30 mph.
Tuesday   Partly sunny. Not as warm with highs in the upper 70s. North winds 15 to 20 mph with gusts up to 30 mph.
Tuesday night   Mostly clear. Lows in the upper 50s. North winds 10 to 15 mph with gusts up to 25 mph, diminishing to around 5 mph after midnight.
Wednesday and wednesday night   Mostly clear. Highs around 80. Lows around 60.
Thursday   Partly sunny. Highs in the lower 80s.
Thursday night   Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 60s.
Friday   Partly sunny. Highs in the mid 80s.
Friday night through saturday night   Mostly clear. Hot. Lows in the upper 60s. Highs around 90.
Sunday   Partly sunny. Hot with highs in the mid 90s.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heat Wave Continues for Western Corn Belt This Weekend, Then Ends
Posted at 12:00PM Fri Jul 17, 2026 CDT
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