County Forecast for Onida , SD
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031900-
Sully-
Including the city of Onida
636 AM CDT Wed Jun 3 2026

Today   Mostly cloudy with a chance of showers with a slight chance of thunderstorms this morning, then partly sunny with a chance of thunderstorms this afternoon. Highs in the lower 80s. South winds 15 to 20 mph. Chance of rain 50 percent.
Tonight   Mostly cloudy. A chance of thunderstorms in the evening. Some thunderstorms may be severe. Lows in the mid 50s. North winds 10 to 15 mph, diminishing to around 5 mph after midnight. Chance of rain 50 percent.
Thursday   Partly sunny. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Some thunderstorms may be severe. Some thunderstorms may be severe. Highs in the lower 80s. East winds 5 to 10 mph. Chance of rain 50 percent.
Thursday night   Mostly cloudy. A chance of thunderstorms in the evening, then a chance of showers after midnight. Lows in the mid 50s. Northeast winds 10 to 15 mph. Chance of rain 50 percent.
Friday   Partly sunny with a slight chance of showers. Isolated thunderstorms in the afternoon. Some thunderstorms may produce small hail and heavy rainfall in the afternoon. Highs in the lower 80s. North winds 5 to 10 mph. Chance of rain 20 percent.
Friday night and saturday   Mostly clear and breezy. Lows in the mid 50s. Highs in the upper 80s.
Saturday night   Mostly clear in the evening, then becoming partly cloudy. Breezy with lows in the lower 60s.
Sunday   Partly sunny and breezy, hot with highs in the lower 90s.
Sunday night   Partly cloudy with a chance of showers with a slight chance of thunderstorms. Breezy with lows in the lower 60s. Chance of rain 40 percent.
Monday   Mostly cloudy with a slight chance of showers in the morning, then partly sunny with a chance of showers with a slight chance of thunderstorms in the afternoon. Highs in the mid 80s. Chance of rain 40 percent.
Monday night   Partly cloudy. A chance of thunderstorms, mainly in the evening. Lows in the upper 50s. Chance of rain 30 percent.
Tuesday   Partly sunny. Hot with highs around 90.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
Northern System Finally Starting to Move East Wednesday
Posted at 5:32AM Wed Jun 3, 2026 CDT
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