Expires:202512220700;;996880 FPUS53 KFSD 212357 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 555 PM CST Sun Dec 21 2025 SDZ053-220700- Sanborn- Including the city of Woonsocket 555 PM CST Sun Dec 21 2025 .TONIGHT...Mostly cloudy. A chance of sprinkles this evening. Not as cool with lows in the upper 20s. Southeast winds 10 to 15 mph. .MONDAY...Mostly sunny. Highs in the upper 40s. Southeast winds 5 to 10 mph, becoming northwest in the afternoon. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the mid 20s. Northwest winds 5 to 10 mph. .TUESDAY...Partly sunny. Highs around 40. North winds around 5 mph, becoming east in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Near steady temperature in the lower 30s. Southeast winds around 10 mph with gusts up to 20 mph. .WEDNESDAY...Mostly cloudy in the morning, then clearing. Not as cool with highs in the lower 50s. .WEDNESDAY NIGHT...Partly cloudy in the evening, then becoming mostly cloudy. Lows in the mid 30s. .CHRISTMAS DAY...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 50s. Temperature falling into the lower 40s in the afternoon. .THURSDAY NIGHT...Mostly cloudy. Cooler with lows in the lower 20s. .FRIDAY...Mostly sunny. Cooler with highs in the upper 30s. .FRIDAY NIGHT...Partly cloudy. Lows in the lower 20s. .SATURDAY...Mostly sunny. Highs in the mid 30s. .SATURDAY NIGHT...Mostly clear. Lows 15 to 20. .SUNDAY...Mostly sunny. Highs in the upper 30s. $$