| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 1119 AM CDT Tue May 26 2026 |  |
This Afternoon: Mostly sunny. A chance of showers early, then a slight chance of showers and thunderstorms. Highs in the lower 90s. South winds 10 to 15 mph. Chance of rain 30 percent. Tonight: Partly cloudy with a slight chance of showers and thunderstorms. Lows in the lower 60s. Southeast winds 5 to 10 mph. Chance of rain 20 percent. Wednesday: Sunny with a slight chance of showers and thunderstorms. Highs in the lower 90s. Southeast winds 5 to 10 mph, becoming east in the afternoon. Chance of rain 20 percent. Wednesday Night: Mostly clear with a slight chance of showers and thunderstorms in the evening, then partly cloudy after midnight. Lows in the upper 50s. East winds 5 to 10 mph. Chance of rain 20 percent. Thursday: Mostly sunny. Highs in the upper 80s. Southeast winds around 10 mph. Thursday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 50s. Friday: Mostly sunny. Highs in the upper 80s. Friday Night: Partly cloudy. Lows in the upper 50s. Saturday: Mostly sunny. Highs in the mid 80s. Saturday Night: Mostly cloudy. Lows in the upper 50s. Sunday: Mostly sunny. Highs in the mid 80s. Sunday Night: Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 50s. Monday: Mostly sunny. Highs in the mid 80s. | |
| Zone Forecast: Lyon County | |
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