Expires:202512212000;;969337 FPUS53 KFSD 211206 ZFPFSD Zone Forecasts for SE South Dakota/NW Iowa/SW Minnesota National Weather Service Sioux Falls SD 604 AM CST Sun Dec 21 2025 IAZ020-212000- Plymouth- Including the city of Le Mars 604 AM CST Sun Dec 21 2025 .TODAY...Sunny. Highs in the lower 40s. South winds 10 to 15 mph. .TONIGHT...Mostly cloudy in the evening, then becoming partly cloudy. Not as cool with lows in the lower 30s. South winds 10 to 15 mph with gusts up to 25 mph. .MONDAY...Sunny. Highs in the upper 40s. South winds 10 to 15 mph with gusts up to 25 mph. .MONDAY NIGHT...Mostly clear in the evening, then becoming partly cloudy. Lows in the upper 20s. Southwest winds around 5 mph, becoming northwest after midnight. .TUESDAY...Partly sunny in the morning, then becoming mostly cloudy. Highs in the lower 40s. North winds around 5 mph, becoming east in the afternoon. .TUESDAY NIGHT...Mostly cloudy. Lows in the lower 30s. .WEDNESDAY...Mostly cloudy. Highs around 50. .WEDNESDAY NIGHT...Mostly cloudy. Lows in the mid 30s. .CHRISTMAS DAY...Mostly cloudy in the morning, then becoming mostly sunny. Highs in the lower 50s. .THURSDAY NIGHT...Mostly cloudy. Cooler with lows in the mid 20s. .FRIDAY...Partly sunny. Cooler with highs in the upper 30s. .FRIDAY NIGHT...Mostly cloudy. Lows in the upper 20s. .SATURDAY...Mostly cloudy in the morning, then becoming partly sunny. Highs in the mid 40s. $$