| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 829 AM CDT Wed Jul 8 2026 | |
Rest Of Today: Mostly cloudy with a chance of thunderstorms. Showers likely early this morning, then a chance of showers this afternoon. Highs around 80. South winds 5 to 10 mph, becoming north with gusts up to 20 mph this afternoon. Chance of rain 70 percent. Tonight: Mostly cloudy. Humid with lows in the lower 60s. North winds 5 to 10 mph. Thursday: Partly sunny in the morning, then clearing. Highs in the lower 80s. North winds 5 to 10 mph. Thursday Night: Mostly clear. Lows in the lower 60s. East winds around 5 mph, becoming south after midnight. Friday: Sunny with highs in the mid 80s. South winds 5 to 10 mph. Friday Night: Mostly clear. Lows in the mid 60s. Saturday: Sunny. Highs in the upper 80s. Saturday Night: Mostly clear. Lows in the upper 60s. Sunday: Sunny. Highs in the lower 90s. Sunday Night: Clear. Lows around 70. Monday: Sunny, hot with highs in the mid 90s. Monday Night: Mostly clear. Lows in the lower 70s. Heat index values in the upper 90s early in the evening. Tuesday: Sunny. Highs in the mid 90s. | |
| Zone Forecast: Lyon County | |
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