Expires:202601011800;;603233 FPUS53 KFSD 011042 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 440 AM CST Thu Jan 1 2026 SDZ071-011800- Union- Including the cities of North Sioux City, Beresford, Elk Point, Alcester, and Jefferson 440 AM CST Thu Jan 1 2026 .TODAY...Partly sunny. Much cooler with highs in the lower 30s. Southeast winds 5 to 10 mph. .TONIGHT...Mostly cloudy. Lows around 18. Northeast winds around 5 mph. .FRIDAY...Cloudy. A slight chance of freezing rain in the afternoon. Highs in the upper 20s. East winds 5 to 10 mph. Chance of precipitation 20 percent. .FRIDAY NIGHT...Mostly cloudy. Lows around 20. Southeast winds around 5 mph. .SATURDAY...Mostly sunny. Not as cool with highs in the upper 30s. South winds around 5 mph, becoming west in the afternoon. .SATURDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the lower 20s. .SUNDAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs in the mid 40s. .SUNDAY NIGHT...Partly cloudy. Lows in the mid 20s. .MONDAY...Partly sunny. Highs in the mid 40s. .MONDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the lower 30s. .TUESDAY...Mostly sunny. Highs around 50. .TUESDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. .WEDNESDAY...Mostly sunny. Highs in the mid 40s. $$