| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 129 PM CDT Wed Sep 23 2026 |  |
This Afternoon: Mostly sunny. Near steady temperature around 70. Southeast winds around 15 mph with gusts up to 25 mph. Tonight: Mostly cloudy. A chance of showers with a slight chance of thunderstorms after midnight. Lows in the mid 50s. Southeast winds 10 to 15 mph with gusts up to 25 mph. Chance of rain 50 percent. Thursday: Patchy fog in the morning. Showers with a slight chance of thunderstorms in the morning, then a chance of showers in the afternoon. Highs in the mid 60s. South winds 10 to 15 mph with gusts up to 25 mph. Chance of rain near 100 percent. Thursday Night: Cloudy. Near steady temperature in the upper 50s. South winds 5 to 10 mph. Friday: Cloudy. A slight chance of showers in the morning, then a chance of showers in the afternoon. Highs in the mid 60s. Southeast winds 10 to 15 mph. Chance of rain 50 percent. Friday Night: Cloudy. A chance of showers in the evening, then showers after midnight. Lows in the upper 50s. Chance of rain 90 percent. Saturday: Showers likely, mainly in the morning. Highs in the upper 60s. Chance of rain 70 percent. Saturday Night: Mostly cloudy. Lows in the upper 50s. Sunday: Mostly cloudy in the morning, then becoming partly sunny. Highs in the lower 70s. Sunday Night: Mostly cloudy. Lows in the upper 50s. Monday: Mostly cloudy in the morning, then becoming partly sunny. A chance of showers in the afternoon. Highs in the lower 70s. Chance of rain 40 percent. Monday Night: Mostly cloudy. A chance of showers in the evening, then showers likely after midnight. Lows in the mid 50s. Chance of rain 70 percent. Tuesday: Showers likely in the morning, then partly sunny with a chance of showers in the afternoon. Highs in the lower 60s. Chance of rain 70 percent. | |
| Zone Forecast: Lyon County | |
Visit your local NWS office at: https://www.weather.gov/fsd/ |