| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 104 PM CDT Thu Aug 27 2026 |  |
This Afternoon: Sunny. Highs in the lower 80s. Northwest winds around 5 mph. Tonight: Mostly clear. Lows in the upper 50s. East winds around 5 mph. Friday: Mostly sunny. Highs in the mid 80s. South winds 10 to 15 mph. Friday Night: Partly cloudy with a chance of showers with a slight chance of thunderstorms in the evening, then mostly cloudy with showers likely with a chance of thunderstorms after midnight. Warmer with lows in the upper 60s. South winds 15 to 20 mph. Chance of rain 70 percent. Saturday: Mostly cloudy with a chance of showers and thunderstorms in the morning, then sunny in the afternoon. Humid with highs in the upper 80s. South winds 15 to 20 mph with gusts up to 30 mph. Chance of rain 50 percent. Saturday Night: Mostly clear in the evening, then becoming mostly cloudy. Lows in the lower 70s. Sunday: Partly sunny. Highs in the upper 80s. Sunday Night: Partly cloudy. Lows around 70. Monday: Partly sunny. Highs in the mid 80s. Monday Night: Partly cloudy in the evening, then mostly cloudy with a chance of showers and thunderstorms after midnight. Lows in the mid 60s. Chance of rain 30 percent. Tuesday: Partly sunny. Highs in the mid 80s. Tuesday Night: Partly cloudy. A chance of showers after midnight. Lows in the mid 60s. Chance of rain 30 percent. Wednesday: Mostly sunny. Highs in the mid 80s. | |
| Zone Forecast: Lyon County | |
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