| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 714 PM CDT Sun Sep 6 2026 | |
Tonight: Mostly cloudy. A chance of showers and thunderstorms this evening. Lows in the upper 60s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Labor Day: Mostly cloudy in the morning, then becoming partly sunny. Humid with highs in the lower 80s. South winds 15 to 20 mph with gusts up to 35 mph. Monday Night: Mostly cloudy with a chance of showers and thunderstorms. Breezy with lows in the upper 60s. South winds 20 to 25 mph with gusts up to 35 mph. Chance of rain 50 percent. Tuesday: Mostly cloudy with a slight chance of showers and thunderstorms in the morning, then mostly sunny in the afternoon. Breezy with highs in the mid 80s. Southwest winds 20 to 25 mph, becoming west 5 to 10 mph with gusts up to 20 mph in the afternoon. Chance of rain 20 percent. Tuesday Night: Mostly clear. Lows around 60. West winds 5 to 10 mph. Wednesday: Sunny. Highs in the mid 70s. Wednesday Night: Mostly clear. Lows in the lower 50s. Thursday: Sunny. Highs around 80. Thursday Night: Mostly clear. Lows in the lower 60s. Friday: Sunny. Highs in the lower 80s. Friday Night: Mostly clear. Lows in the upper 50s. Saturday: Mostly sunny. Highs in the mid 70s. Saturday Night: Mostly cloudy in the evening, then becoming partly cloudy. A 40 percent chance of showers. Lows in the lower 50s. Sunday: Partly sunny with a 40 percent chance of showers. Highs in the upper 60s. | |
| Zone Forecast: Lyon County | |
Visit your local NWS office at: https://www.weather.gov/fsd/ |