Expires:202512210600;;939575 FPUS53 KFSD 202258 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 455 PM CST Sat Dec 20 2025 MNZ072-210600- Lyon- Including the city of Marshall 455 PM CST Sat Dec 20 2025 .TONIGHT...Mostly clear. Colder with lows around 9 above. Northwest winds 5 to 10 mph, becoming southeast after midnight. .SUNDAY...Mostly sunny. Highs in the upper 30s. South winds 10 to 15 mph with gusts up to 25 mph. .SUNDAY NIGHT...Mostly cloudy. A slight chance of rain, freezing rain and snow in the evening. Not as cool with lows in the upper 20s. South winds 15 to 20 mph. Chance of precipitation 20 percent. .MONDAY...Partly sunny. Highs in the mid 40s. South winds 10 to 15 mph. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. West winds 5 to 10 mph. .TUESDAY...Partly sunny in the morning, then becoming mostly cloudy. Cooler with highs in the lower 30s. .TUESDAY NIGHT...Mostly cloudy. Lows in the mid 20s. Temperature rising to around 30 after midnight. .WEDNESDAY...Mostly cloudy. Not as cool with highs in the lower 40s. .WEDNESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Near steady temperature in the mid 30s. .CHRISTMAS DAY...Mostly sunny. Highs in the upper 40s. .THURSDAY NIGHT...Mostly cloudy. Lows in the mid 20s. .FRIDAY...Mostly sunny. Cooler with highs in the upper 30s. .FRIDAY NIGHT...Mostly cloudy. Lows in the lower 20s. .SATURDAY...Mostly sunny. Highs in the lower 30s. $$