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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: 924 PM CDT Sun Oct 18 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.
Tonight... Mostly clear this evening, then becoming partly cloudy. Lows in the lower 40s. Southeast winds 5 to 10 mph.
Monday... Partly sunny in the morning, then clearing. Highs in the mid 60s. Southeast winds 5 to 10 mph.
Monday Night... Mostly clear. Lows in the mid 40s. Southeast winds 5 to 10 mph.
Tuesday... Sunny. Highs in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph.
Tuesday Night... Mostly clear. Lows in the lower 50s. South winds 5 to 10 mph.
Wednesday... Sunny. Highs in the lower 70s.
Wednesday Night... Mostly clear. Lows in the lower 50s.
Thursday... Sunny. Highs in the mid 70s.
Thursday Night... Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s.
Friday... Partly sunny and breezy. Highs in the mid 70s.
Friday Night... Mostly cloudy. A chance of showers after midnight. Lows around 60. Chance of rain 30%.
Saturday... Mostly cloudy in the morning, then becoming partly sunny. A 40% chance of showers. Highs in the upper 60s.
Saturday Night... Partly cloudy with a 40% chance of showers. Cooler with lows around 50.
POP = Probability of Precipitation
McCook Lake Radar Loop
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