Expires:202512212300;;976591 FPUS53 KFSD 211557 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 955 AM CST Sun Dec 21 2025 IAZ022-212300- Buena Vista- Including the city of Storm Lake 955 AM CST Sun Dec 21 2025 .REST OF TODAY...Sunny. Highs in the upper 30s. South winds 10 to 15 mph with gusts up to 30 mph. .TONIGHT...Mostly cloudy. Not as cool with lows in the upper 20s. South winds 10 to 15 mph. .MONDAY...Sunny. Highs in the mid 40s. Southwest winds 10 to 15 mph. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 20s. Southwest winds 5 to 10 mph, becoming northwest after midnight. .TUESDAY...Partly sunny. Highs in the upper 30s. North winds 5 to 10 mph. .TUESDAY NIGHT...Mostly cloudy. Near steady temperature around 30. .WEDNESDAY...Mostly cloudy. Highs in the mid 40s. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. .CHRISTMAS DAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs around 50. .THURSDAY NIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Lows in the mid 20s. .FRIDAY...Mostly sunny. Cooler with highs in the upper 30s. .FRIDAY NIGHT...Mostly cloudy. Lows in the mid 20s. .SATURDAY...Mostly cloudy. Highs in the lower 40s. $$