Oahe Grain Corporation

	County Forecast for Onida , SD

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012200-
Sully-
Including the city of Onida
907 AM CDT Tue Sep 1 2026

Rest of today   Mostly cloudy. Showers likely with a chance of thunderstorms this afternoon. Highs in the upper 70s. East winds 5 to 10 mph with gusts up to 20 mph. Chance of rain 70 percent.
Tonight   Mostly cloudy with showers likely with a chance of thunderstorms in the evening, then partly cloudy after midnight. Lows in the mid 50s. Northeast winds 5 to 10 mph. Chance of rain 70 percent.
Wednesday   Partly sunny. Humid with highs in the mid 80s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Wednesday night   Mostly clear in the evening, then becoming partly cloudy. Humid with lows in the lower 60s. Southeast winds 15 to 20 mph.
Thursday   Mostly sunny. Hot with highs around 90. South winds 5 to 10 mph.
Thursday night through saturday   Mostly clear. Hot. Lows in the mid 60s. Highs in the lower 90s.
Saturday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.
Sunday   Partly sunny. A slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 20 percent.
Sunday night   Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Lows in the lower 60s. Chance of rain 50 percent.
Labor day   Partly sunny with a 50 percent chance of showers. Highs in the lower 80s.

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Bryce Anderson – DTN Meteorologist

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Stalled Front Producing Limited Northern Showers Tuesday

Showers and thunderstorms, some severe, from Nebraska to Michigan, Mid-Atlantic. Tropical storm to move into east Texas. » More DTN Weather Commentary

Posted at 5:34AM Tue Sep 1, 2026 CDT

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