Weather WorldSully County, SD 7-Day Night Weather Forecast
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Sully County, SD Weather Forecast
Sully County, SD Weather Forecast Date: 1108 AM CDT Wed Sep 30 2026
The area/counties/county of: Sully, including the city of Onida.or toggle through each period.
Rest of Today... Partly sunny. Highs in the upper 70s. Northwest winds 5 to 10 mph.
Tonight... Mostly cloudy. Lows around 50. North winds 10 to 15 mph.
Thursday... Partly sunny. Much cooler with highs in the lower 60s. North winds 10 to 15 mph.
Thursday Night... Mostly cloudy. A slight chance of showers after midnight. Lows in the mid 40s. North winds 5 to 10 mph, becoming northeast after midnight. Chance of rain 20%.
Friday... Partly sunny. Highs in the lower 60s. Southeast winds 15 to 20 mph.
Friday Night... Partly cloudy. Lows in the upper 40s.
Saturday... Partly sunny. A slight chance of showers in the morning. Highs in the upper 60s. Chance of rain 20%.
Saturday Night... Mostly clear. Lows in the mid 40s. Highs in the lower 60s.
Sunday... Mostly clear. Lows in the mid 40s. Highs in the lower 60s.
Monday... Partly cloudy and breezy. Highs in the upper 60s. Lows in the lower 50s.
Monday Night... Partly cloudy and breezy. Highs in the upper 60s. Lows in the lower 50s.
POP = Probability of Precipitation
Sully County Radar Loop
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