FZUS53 KMKX 120911 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 311 AM CST Fri Dec 12 2025 For waters within five nautical miles of shore on Lake Michigan LMZ643-122200- Sheboygan to Port Washington WI- 311 AM CST Fri Dec 12 2025 .EARLY THIS MORNING...Northwest wind 5 to 10 knots. Partly cloudy. Waves nearly calm. .TODAY...Northwest wind 5 to 10 knots backing west late in the morning, then rising to 10 to 15 knots with gusts to around 20 knots in the afternoon. Chance of snow in the afternoon. Waves around 1 foot. .TONIGHT...West wind 15 to 20 knots veering northwest 15 to 25 knots after midnight. Slight chance of snow through around midnight. Waves 1 to 2 feet building to 2 to 4 feet in the late evening and overnight. A small craft advisory may be needed. .SATURDAY...Northwest wind up to 30 knots easing to 15 to 25 knots late in the morning, then backing west early in the afternoon veering northwest late in the afternoon. Mostly cloudy. Waves 2 to 4 feet. .SATURDAY NIGHT...Northwest wind up to 30 knots. Slight chance of snow. Waves 3 to 4 feet building to 3 to 5 feet early in the morning. Wave heights are for ice free areas. $$ LMZ644-122200- Port Washington to North Point Light WI- 311 AM CST Fri Dec 12 2025 .EARLY THIS MORNING...Northwest wind 5 to 10 knots. Mostly clear. Waves nearly calm. .TODAY...Northwest wind 5 to 10 knots backing west late in the morning, then rising to 10 to 15 knots early in the afternoon becoming west 10 to 15 knots with gusts to around 20 knots late in the afternoon. Partly sunny. Waves around 1 foot. .TONIGHT...West wind 15 to 20 knots veering northwest 15 to 25 knots early in the morning. Cloudy through around midnight then becoming partly cloudy. Waves 1 to 2 feet. .SATURDAY...Northwest wind up to 30 knots easing to 15 to 25 knots late in the morning, then backing west early in the afternoon veering northwest late in the afternoon. Mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. .SATURDAY NIGHT...Northwest wind up to 30 knots. Partly cloudy. Waves 3 to 4 feet building to 3 to 5 feet early in the morning. Wave heights are for ice free areas. $$ LMZ645-122200- North Point Light to Wind Point WI- 311 AM CST Fri Dec 12 2025 .EARLY THIS MORNING...Northwest wind 5 to 10 knots. Mostly clear. Waves nearly calm. .TODAY...Northwest wind 5 to 10 knots backing west late in the morning, then rising to 10 to 15 knots early in the afternoon becoming west 10 to 15 knots with gusts to around 20 knots late in the afternoon. Partly sunny. Waves around 1 foot. .TONIGHT...West wind 10 to 20 knots becoming 15 to 20 knots late in the evening, then becoming west 15 to 20 knots after midnight veering northwest early in the morning. Gusts up to 25 knots. Mostly cloudy. Waves 1 to 2 feet building to 2 to 4 feet after midnight. .SATURDAY...Northwest wind 15 to 25 knots. Cloudy. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. A small craft advisory may be needed. .SATURDAY NIGHT...Northwest wind up to 30 knots. Slight chance of snow through the night. Waves 4 to 6 feet. Wave heights are for ice free areas. $$ LMZ646-122200- Wind Point WI to Winthrop Harbor IL- 311 AM CST Fri Dec 12 2025 .EARLY THIS MORNING...Northwest wind 5 to 10 knots. Partly cloudy. Waves nearly calm. .TODAY...Northwest wind 5 to 10 knots backing west late in the morning, then rising to 10 to 15 knots in the afternoon. Partly sunny. Waves around 1 foot. .TONIGHT...West wind 10 to 20 knots becoming 15 to 20 knots late in the evening, then veering northwest after midnight. Gusts up to 25 knots. Cloudy. Waves 1 to 2 feet. .SATURDAY...Northwest wind 15 to 25 knots backing west late in the morning, then veering northwest in the afternoon. Chance of snow in the afternoon. Waves 1 to 2 feet. A small craft advisory may be needed. .SATURDAY NIGHT...Northwest wind 15 to 25 knots rising to up to 30 knots in the late evening and overnight. Slight chance of snow through the night. Waves 4 to 6 feet. Wave heights are for ice free areas. $$ See Lake Michigan Open Waters Forecast for Sunday through Tuesday.