County Forecast for Onida , SD
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220900-
Sully-
Including the city of Onida
837 PM CDT Tue Oct 21 2025

Tonight   Mostly clear. Lows around 30. West winds 5 to 10 mph.
Wednesday   Mostly sunny. Highs in the upper 50s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Wednesday night   Mostly clear. Lows in the lower 30s. Northwest winds 5 to 10 mph, becoming southeast after midnight.
Thursday   Mostly sunny. Highs in the upper 50s. Southeast winds 10 to 15 mph.
Thursday night   Partly cloudy in the evening, then becoming mostly clear. Lows in the upper 30s. Southeast winds around 10 mph with gusts up to 20 mph.
Friday and friday night   Mostly clear. Highs in the mid 60s. Lows in the lower 40s.
Saturday   Mostly sunny. Highs in the upper 60s.
Saturday night   Partly cloudy. Lows in the upper 40s.
Sunday   Partly sunny. Highs in the upper 60s.
Sunday night and monday   Mostly cloudy. A 50 percent chance of showers. Lows in the mid 40s. Highs in the mid 50s.
Monday night   Mostly cloudy with a 40 percent chance of showers. Lows in the upper 30s.
Tuesday   Partly sunny with a 20 percent chance of showers. Breezy with highs in the lower 50s.
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DTN Weather Summary

Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Showers Continue in Great Lakes, Northeast Wednesday
Posted at 11:59AM Tue Oct 21, 2025 CDT
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