| NWS Forecast for: Lyon County Issued by: National Weather Service Sioux Falls, SD Last Update: 319 PM CST Wed Jan 21 2026 |  |
Tonight: Mostly cloudy with a chance of flurries this evening, then partly cloudy after midnight. Breezy, cold with lows around 6 above. Northwest winds 15 to 25 mph with gusts up to 40 mph, becoming west 10 to 15 mph with gusts up to 25 mph after midnight. Thursday: Partly sunny. Much colder with highs around 10 above. Temperature falling to around zero in the afternoon. Northwest winds 15 to 20 mph with gusts up to 30 mph. Wind chill values as low as 25 below. Thursday Night: Partly cloudy. Much colder with lows around 19 below. Northwest winds 15 to 20 mph. Wind chill values as low as 41 below. Friday: Mostly sunny. Much colder with highs around 9 below. Northwest winds 5 to 10 mph. Wind chill values as low as 40 below. Friday Night: Mostly cloudy and cold. Near steady temperature around 12 below. Northwest winds around 5 mph, becoming south around 5 mph after midnight. Saturday: Partly sunny. Not as cold with highs zero to 5 above zero. Wind chill values as low as 25 below. Saturday Night: Partly cloudy. Cold with lows around 10 below. Wind chill values as low as 25 below. Sunday: Partly sunny. Cold with highs around zero. Wind chill values as low as 25 below. Sunday Night: Partly cloudy. Cold with lows around 10 below. Wind chill values as low as 30 below. Monday: Mostly sunny. Not as cool with highs around 15. Wind chill values as low as 30 below. Monday Night: Partly cloudy and not as cold. Near steady temperature around 10 above. Tuesday: Partly sunny. Highs around 20. Tuesday Night: Mostly cloudy. Cold with lows around zero. Wind chill values as low as 15 below. Wednesday: Mostly sunny. Cold with highs 10 to 15. Wind chill values as low as 15 below. | |
| Zone Forecast: Lyon County | |
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