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Walker Lake, SD Weather Forecast
Walker Lake, SD Weather Forecast Date: 217 AM CDT Sat Aug 15 2026
The area/counties/county of: Sully, including the city of Onida.or toggle through each period.
Rest of Tonight... Mostly cloudy with a 20% chance of thunderstorms. Near steady temperature in the mid 60s. Southeast winds around 5 mph.
Saturday... Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the upper 70s. Northwest winds 10 to 15 mph with gusts up to 25 mph.
Saturday Night... Partly cloudy in the evening, then clearing. Lows in the mid 50s. North winds 10 to 15 mph.
Sunday... Mostly sunny. Highs in the upper 70s. North winds around 5 mph.
Sunday Night... Partly cloudy with a slight chance of thunderstorms. A chance of showers after midnight. Lows in the upper 50s. East winds 5 to 10 mph, becoming south after midnight. Chance of rain 50%.
Monday... Partly sunny. Highs in the lower 80s.
Monday Night... Partly cloudy with a slight chance of thunderstorms in the evening, then mostly cloudy with a chance of thunderstorms after midnight. Lows in the upper 50s. Chance of rain 40%.
Tuesday... Showers likely. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 70%.
Tuesday Night... Partly cloudy with a chance of thunderstorms in the evening, then mostly cloudy with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Chance of rain 50%.
Wednesday... Mostly cloudy with a slight chance of showers in the morning, then partly sunny in the afternoon. Highs in the mid 70s. Chance of rain 20%.
Wednesday Night... Partly cloudy. A 20% chance of thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Thursday... Partly cloudy. A 20% chance of thunderstorms. Lows in the mid 50s. Highs in the upper 70s.
Thursday Night... Mostly clear. A slight chance of thunderstorms in the evening. Lows in the upper 50s. Chance of rain 20%.
POP = Probability of Precipitation
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