County Forecast for Big Stone City , SD
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140900-
Grant-
Including the city of Milbank
852 PM CDT Mon Jul 13 2026

..heat advisory in effect until 10 pm cdt thursday   
Tonight   Clear. Lows in the lower 70s. South winds 15 to 20 mph with gusts up to 30 mph.
Tuesday   Sunny, hot with highs in the mid 90s. Southwest winds 10 to 15 mph. Gusts up to 30 mph in the morning.
Tuesday night   Clear. Lows around 70. Southwest winds 5 to 10 mph.
Wednesday   Mostly sunny. Hot with highs in the mid 90s. Southwest winds 5 to 10 mph, becoming south in the afternoon.
Wednesday night   Mostly clear. Lows in the lower 70s. South winds 10 to 15 mph with gusts up to 25 mph.
Thursday and thursday night   Mostly clear. Hot. Highs in the mid 90s. Lows in the mid 70s.
Friday through sunday   Mostly clear. Hot. Highs around 90. Lows in the upper 60s.
Sunday night   Mostly clear in the evening, then becoming partly cloudy. A 20 percent chance of thunderstorms. Lows in the mid 60s.
Monday   Partly sunny. A slight chance of showers in the morning. Highs in the mid 80s. Chance of rain 20 percent.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Heat Continues to Spread East Tuesday
Posted at 12:07PM Mon Jul 13, 2026 CDT
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