| NWS Forecast for: Gregory County Issued by: National Weather Service Sioux Falls, SD Last Update: 239 AM CDT Tue Aug 18 2026 | |
Today: Mostly sunny. A slight chance of showers and thunderstorms this morning. Highs in the lower 80s. West winds 5 to 10 mph, becoming north this afternoon. Chance of rain 20 percent. Tonight: Mostly cloudy. Lows in the lower 60s. Northeast winds around 5 mph, becoming south around 5 mph after midnight. Wednesday: Mostly cloudy in the morning, then becoming mostly sunny. A chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the upper 70s. South winds 5 to 10 mph. Chance of rain 50 percent. Wednesday Night: Mostly clear. A chance of showers and thunderstorms in the evening. Lows around 60. South winds 5 to 10 mph. Chance of rain 50 percent. Thursday: Sunny. Highs in the mid 80s. Southwest winds around 10 mph with gusts up to 20 mph. Thursday Night: Mostly clear. Lows in the mid 60s. Friday: Sunny. Highs in the mid 80s. Friday Night: Mostly clear. Lows in the lower 60s. Saturday: Mostly sunny. Highs in the lower 80s. Saturday Night: Mostly clear in the evening, then mostly cloudy with a chance of showers after midnight. Lows in the lower 60s. Chance of rain 50 percent. Sunday: Mostly cloudy in the morning, then becoming mostly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 50 percent. Sunday Night: Partly cloudy. Lows in the mid 60s. Monday: Partly sunny. Highs in the lower 80s. | |
| Zone Forecast: Gregory County | |
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