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Sweeney, SD Weather Forecast
Sweeney, SD Weather Forecast Date: 331 PM CDT Sat Sep 19 2026
The area/counties/county of: Lyman, including the city of Kennebec.or toggle through each period.
Tonight... Cloudy with a 20% chance of showers. Lows in the upper 50s. Northeast winds 10 to 15 mph.
Sunday... A chance of showers in the morning, then showers in the afternoon. Patchy fog. Near steady temperature in the upper 50s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90%.
Sunday Night... Showers. Patchy fog. Near steady temperature in the upper 50s. East winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 90%.
Monday... Mostly cloudy. A chance of showers, mainly in the morning. Highs in the lower 60s. East winds 10 to 15 mph. Chance of rain 50%.
Monday Night... Mostly cloudy. Lows in the mid 40s. Southeast winds 10 to 15 mph.
Tuesday... Partly sunny. Highs in the mid 60s.
Tuesday Night... Partly cloudy in the evening, then mostly cloudy with a slight chance of showers after midnight. Lows around 50. Chance of rain 20%.
Wednesday... Mostly cloudy in the morning, then becoming partly sunny. A 20% chance of showers. Breezy with highs around 70.
Wednesday Night... Mostly cloudy with a chance of showers with a slight chance of thunderstorms. Breezy with lows in the mid 50s. Chance of rain 50%.
Thursday... Partly sunny. Highs in the mid 70s.
Thursday Night... Partly cloudy. Lows in the mid 50s.
Friday... Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 70s.
Friday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers with a slight chance of thunderstorms after midnight. Lows in the upper 50s. Chance of rain 30%.
POP = Probability of Precipitation
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