County Forecast for Onida , SD
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111800-
Sully-
Including the city of Onida
557 AM CDT Sat Apr 11 2026

Today   Mostly cloudy this morning, then becoming partly sunny. Windy, warmer with highs in the lower 70s. Southeast winds 20 to 30 mph with gusts up to 40 mph.
Tonight   Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows around 50. Southeast winds 15 to 20 mph, becoming south after midnight. Chance of rain 20 percent.
Sunday   Mostly sunny. Highs around 80. West winds 15 to 20 mph with gusts up to 30 mph.
Sunday night   Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 40s. Northwest winds 10 to 15 mph, becoming northeast after midnight.
Monday   Partly sunny with a 20 percent chance of showers. Highs in the mid 70s. East winds 10 to 15 mph, becoming south in the afternoon.
Monday night   Mostly clear in the evening, then becoming partly cloudy. A 20 percent chance of showers. Lows in the mid 40s.
Tuesday   Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 60s. Chance of rain 50 percent.
Tuesday night   Mostly cloudy. A chance of showers, mainly in the evening. Lows in the lower 40s. Chance of rain 50 percent.
Wednesday   Partly sunny with a 20 percent chance of showers. Highs in the lower 70s.
Wednesday night and thursday   Partly cloudy. Lows in the mid 40s. Highs in the lower 70s.
Thursday night and friday   Mostly cloudy. A chance of rain and snow showers. Breezy. Lows in the lower 30s. Highs in the upper 40s. Chance of precipitation 30 percent.
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Bryce Anderson image
Bryce Anderson – DTN Meteorologist
System Opening Door for Widespread Rain This Weekend
Posted at 11:57AM Fri Apr 10, 2026 CDT
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