| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 1139 AM CDT Thu May 28 2026 | |
| This Afternoon: Partly sunny. Highs in the upper 80s. South winds around 5 mph, increasing to southeast 10 to 15 mph. Tonight: Cloudy. Lows in the lower 60s. Southeast winds 10 to 15 mph. Friday: Mostly cloudy. A slight chance of showers in the afternoon. Not as warm with highs in the upper 70s. Southeast winds 10 to 15 mph. Chance of rain 20 percent. Friday Night: Mostly cloudy. A slight chance of showers in the evening, then a chance of showers with a slight chance of thunderstorms after midnight. Lows around 60. Southeast winds 10 to 15 mph. Chance of rain 30 percent. Saturday: Mostly cloudy with a chance of showers. A slight chance of thunderstorms in the morning, then a chance of thunderstorms in the afternoon. Highs in the lower 80s. Southeast winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 40 percent. Saturday Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers and thunderstorms after midnight. Lows in the upper 50s. Chance of rain 50 percent. Sunday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers in the morning. Highs in the lower 80s. Chance of rain 50 percent. Sunday Night: Mostly cloudy with a chance of showers and thunderstorms. Lows around 60. Chance of rain 40 percent. Monday: Mostly cloudy in the morning, then becoming mostly sunny. A chance of showers and thunderstorms. Highs in the lower 80s. Chance of rain 40 percent. Monday Night: Partly cloudy. A chance of showers and thunderstorms in the evening. Lows in the upper 50s. Chance of rain 40 percent. Tuesday: Partly sunny. Highs in the lower 80s. Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows in the upper 50s. Wednesday: Partly sunny. Highs around 80. | |
| Zone Forecast: Lyon County | |
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