County Forecast for Onida , SD
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022200-
Sully-
Including the city of Onida
938 AM CDT Sun Aug 2 2026

Rest of today   Partly sunny. Patchy smoke. Windy, hot with highs in the upper 90s. South winds 15 to 20 mph with gusts up to 30 mph, increasing to 20 to 30 mph with gusts up to 40 mph this afternoon.
Tonight   Partly cloudy. Patchy smoke. Breezy with lows in the upper 60s. Southeast winds 20 to 25 mph with gusts up to 40 mph.
Monday   Partly sunny. Patchy smoke. Breezy, hot with highs around 90. South winds 20 to 25 mph, becoming northwest in the afternoon.
Monday night   Mostly cloudy in the evening, then clearing. Windy, cooler with lows in the mid 50s. North winds 20 to 30 mph with gusts up to 40 mph, diminishing to 10 to 15 mph with gusts up to 25 mph after midnight.
Tuesday   Partly sunny. Not as warm with highs in the mid 70s. Northwest winds 5 to 10 mph.
Tuesday night and wednesday   Partly cloudy. Lows in the mid 50s. Highs in the lower 80s.
Wednesday night   Mostly clear. Lows in the upper 50s.
Thursday   Partly sunny. Highs in the upper 80s.
Thursday night   Mostly clear. Lows in the lower 60s.
Friday   Partly sunny. Hot with highs in the lower 90s.
Friday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 60s.
Saturday   Partly sunny. Hot with highs in the lower 90s.
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Bryce Anderson – DTN Meteorologist
System Bringing Heavy Rain Eastward Through Corn Belt This Weekend
Posted at 12:06PM Fri Jul 31, 2026 CDT
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