Expires:202512262300;;261858 FPUS53 KFSD 261526 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 924 AM CST Fri Dec 26 2025 MNZ072-262300- Lyon- Including the city of Marshall 924 AM CST Fri Dec 26 2025 .REST OF TODAY...Mostly sunny. Patchy fog. Highs in the upper 30s. Northwest winds 5 to 10 mph, becoming south this afternoon. .TONIGHT...Mostly cloudy. Patchy fog. Lows in the lower 30s. Temperature rising into the upper 30s after midnight. South winds 10 to 15 mph. .SATURDAY...Partly sunny. Not as cool with highs around 50. South winds 10 to 15 mph. .SATURDAY NIGHT...Mostly cloudy and breezy. Much cooler with lows around 16. Northwest winds 10 to 15 mph, increasing to 15 to 25 mph after midnight. .SUNDAY...Cloudy. A chance of snow, mainly in the morning. Little or no snow accumulation. Breezy and much cooler with highs in the lower 20s. Temperature falling to around 14 in the afternoon. Northwest winds 20 to 25 mph with gusts up to 35 mph. Chance of snow 30 percent. .SUNDAY NIGHT...Mostly cloudy and windy, colder with lows zero to 5 above zero. Wind chill values as low as 20 below. .MONDAY...Mostly sunny. Cold with highs around 15. Wind chill values as low as 15 below. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Cold with lows around 10 above. Temperature rising to around 20 after midnight. .TUESDAY...Partly sunny in the morning, then becoming mostly cloudy. Not as cool with highs in the mid 30s. .TUESDAY NIGHT...Mostly cloudy. Cold with lows around 10 above. .WEDNESDAY...Mostly cloudy. A slight chance of snow in the morning. Much cooler with highs around 20. Chance of snow 20 percent. .WEDNESDAY NIGHT...Mostly cloudy. Cold with lows zero to 5 above zero. Wind chill values as low as 10 below. .NEW YEARS DAY...Mostly sunny. Highs 15 to 20. Wind chill values as low as 10 below in the morning. $$