| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 544 AM CDT Fri Oct 3 2025 | |
Today: Mostly sunny. Highs around 90. South winds 10 to 15 mph. Gusts up to 30 mph this afternoon. Tonight: Partly cloudy in the evening, then becoming mostly clear. Warmer with lows around 70. South winds 15 to 20 mph with gusts up to 35 mph. Saturday: Sunny, windy with highs around 90. South winds 20 to 30 mph with gusts up to 40 mph. Saturday Night: Mostly clear and windy. Lows in the upper 60s. South winds 20 to 30 mph with gusts up to 40 mph. Sunday: Sunny, breezy and not as warm with highs around 80. South winds around 25 mph, becoming southwest in the afternoon. Sunday Night: Mostly clear. Much cooler with lows in the mid 40s. Monday: Mostly sunny. Much cooler with highs in the lower 60s. Monday Night: Partly cloudy. Lows in the mid 40s. Tuesday: Sunny. Highs in the mid 60s. Tuesday Night: Clear. Lows in the upper 30s. Wednesday: Sunny. Highs in the mid 60s. Wednesday Night: Mostly clear in the evening, then partly cloudy with a chance of showers after midnight. Lows in the upper 40s. Chance of rain 30 percent. Thursday: Mostly sunny. A chance of showers in the morning. Highs in the upper 60s. Chance of rain 30 percent. | |
| Zone Forecast: Lyon County | |
Visit your local NWS office at: https://www.weather.gov/fsd/ |