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McCook Lake, SD 7-Day Night Weather Forecast
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McCook Lake, SD Weather Forecast
McCook Lake, SD Weather Forecast Date: 239 AM CDT Sat Aug 08 2026
The area/counties/county of: Union, including the cities of: North Sioux City, Beresford, Elk Point, Alcester, and Jefferson.or toggle through each period.
Today... Mostly sunny. A chance of sprinkles this afternoon. Highs in the lower 80s. Southeast winds 10 to 15 mph.
Tonight... Partly cloudy in the evening, then becoming mostly cloudy. Warmer with lows in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Sunday... Partly sunny. Humid with highs in the upper 80s. South winds 5 to 10 mph, becoming northeast in the afternoon. Heat index values in the upper 90s in the afternoon.
Sunday Night... Partly cloudy in the evening, then mostly cloudy with a chance of sprinkles after midnight. Humid with lows in the upper 60s. Northeast winds 5 to 10 mph.
Monday... Mostly cloudy in the morning, then becoming mostly sunny. Humid with highs in the mid 80s. East winds 5 to 10 mph.
Monday Night... Partly cloudy with a chance of sprinkles in the evening, then mostly cloudy with a slight chance of showers and thunderstorms after midnight. Lows in the upper 60s. Chance of rain 20%.
Tuesday... Partly sunny. Highs in the mid 80s.
Tuesday Night... Partly cloudy. A chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 40%.
Wednesday... Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 80s.
Wednesday Night... Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the lower 60s. Chance of rain 40%.
Thursday... Cloudy in the morning, then becoming partly sunny. Highs in the mid 70s.
Thursday Night... Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 40%.
POP = Probability of Precipitation
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