


NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 727 AM CDT Fri Aug 1 2025 | ![]() |
Today: Mostly sunny. Areas of smoke. Highs in the mid 70s. Southeast winds 5 to 10 mph. Tonight: Partly cloudy. Areas of smoke. Lows in the mid 50s. Southeast winds 5 to 10 mph. Saturday: Partly sunny. A slight chance of showers in the morning. Areas of smoke. Highs in the mid 70s. Southeast winds 10 to 15 mph. Chance of rain 20 percent. Saturday Night: Mostly cloudy. A chance of showers and thunderstorms after midnight. Lows in the upper 50s. Southeast winds around 10 mph. Chance of rain 40 percent. Sunday: Mostly cloudy. A chance of showers and thunderstorms, mainly in the morning. Highs in the mid 70s. South winds 10 to 15 mph. Chance of rain 40 percent. Sunday Night: Mostly cloudy. A slight chance of showers and thunderstorms in the evening, then a chance of showers after midnight. Lows around 60. Chance of rain 30 percent. Monday: Mostly cloudy in the morning, then partly sunny with a chance of showers and thunderstorms in the afternoon. Highs in the upper 70s. Chance of rain 30 percent. Monday Night: Partly cloudy. Lows in the lower 60s. Tuesday: Mostly sunny. Highs in the lower 80s. Tuesday 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. Wednesday: Mostly sunny. Highs in the mid 80s. Wednesday Night: Partly cloudy. Lows in the upper 60s. Thursday: Mostly sunny. Highs in the upper 80s. | |
Zone Forecast: Lyon County | |
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