7-Day Zone Forecast for Lyon County (Text-Only)
NWS Forecast for: Lyon County
Issued by: National Weather Service Sioux Falls, SD
Last Update: 614 AM CDT Fri Aug 28 2026




Today: Partly sunny. Isolated showers this morning. Highs in the mid 80s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 20 percent.

Tonight: Partly cloudy in the evening, then mostly cloudy with showers likely with a chance of thunderstorms after midnight. Lows in the mid 60s. South winds 15 to 20 mph. Chance of rain 70 percent.

Saturday: Mostly sunny. A chance of showers and thunderstorms in the morning. 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: Partly cloudy in the evening, then becoming mostly cloudy. Humid with lows in the lower 70s. South winds 5 to 10 mph.

Sunday: Mostly sunny. Humid with highs in the upper 80s. South winds 5 to 10 mph.

Sunday Night: Partly cloudy in the evening, then becoming mostly cloudy. Lows around 70.

Monday: Partly sunny. Highs in the mid 80s.

Monday Night: Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 60s.

Tuesday: Partly sunny. Highs in the lower 80s.

Tuesday Night: Partly cloudy in the evening, then becoming mostly cloudy. A chance of showers in the evening. Lows in the mid 60s. Chance of rain 30 percent.

Wednesday: Partly sunny in the morning, then clearing. Highs in the mid 80s.

Wednesday Night: Mostly clear in the evening, then becoming partly cloudy. A chance of showers in the evening. Lows in the upper 60s. Chance of rain 30 percent.

Thursday: Mostly sunny. Highs in the upper 80s.







Zone Forecast: Lyon County

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