| NWS Forecast for: McCook County Issued by: National Weather Service Sioux Falls, SD Last Update: 1054 PM CDT Sun Aug 16 2026 |  |
Overnight: Mostly clear late this evening, then becoming partly cloudy. Lows in the upper 50s. North winds around 5 mph, becoming south. Monday: Mostly sunny. Highs in the lower 80s. South winds 10 to 15 mph with gusts up to 25 mph. Monday Night: Partly cloudy in the evening, then becoming mostly cloudy. A slight chance of thunderstorms. A slight chance of showers in the evening, then a chance of showers after midnight. Humid with lows in the lower 60s. Southwest winds 5 to 10 mph. Chance of rain 40 percent. Tuesday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Humid with highs in the upper 70s. Northeast winds around 5 mph, becoming southeast in the afternoon. Chance of rain 50 percent. Tuesday Night: Mostly cloudy. A chance of showers and thunderstorms in the evening. Lows in the mid 50s. Northeast winds around 5 mph, becoming southeast after midnight. Chance of rain 50 percent. Wednesday: Partly sunny with a slight chance of showers. A slight chance of thunderstorms in the afternoon. Highs in the mid 70s. Chance of rain 20 percent. Wednesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s. Thursday: Mostly cloudy in the morning, then clearing. Highs in the upper 70s. Thursday Night: Mostly clear. Lows around 60. Friday: Mostly sunny. Highs in the lower 80s. Friday Night: Mostly clear. Lows around 60. Saturday: Mostly sunny. Highs in the upper 70s. Saturday Night: Partly cloudy. Lows in the lower 60s. Sunday: Mostly cloudy in the morning, then clearing. Highs in the upper 70s. | |
| Zone Forecast: McCook County | |
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