FZUS53 KMKX 210010 NSHMKX Nearshore Marine Forecast National Weather Service Milwaukee/Sullivan WI 710 PM CDT Fri Mar 20 2026 For waters within five nautical miles of shore on Lake Michigan LMZ643-210400- Sheboygan to Port Washington WI- 710 PM CDT Fri Mar 20 2026 .TONIGHT...North wind 5 to 10 knots veering east early in the morning. Mostly cloudy. Waves around 1 foot. .SATURDAY...Southeast wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then veering south in the afternoon. Partly sunny. Waves 1 to 2 feet building to 2 to 4 feet late in the afternoon. .SATURDAY NIGHT...South wind 10 to 15 knots veering north early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves 2 to 4 feet subsiding to 1 to 2 feet after midnight. .SUNDAY...North wind 15 to 20 knots becoming 15 to 25 knots in the late morning and early afternoon, then becoming north 15 to 25 knots late in the afternoon. Slight chance of rain through the day. Slight chance of snow in the afternoon. Waves 3 to 4 feet building to 5 to 7 feet. A small craft advisory may be needed. $$ LMZ644-210400- Port Washington to North Point Light WI- 710 PM CDT Fri Mar 20 2026 .TONIGHT...North wind 5 to 10 knots veering east early in the morning. Mostly cloudy. Waves around 1 foot. .SATURDAY...Southeast wind 5 to 10 knots rising to 10 to 15 knots late in the morning, then veering south early in the afternoon becoming south 10 to 15 knots late in the afternoon. Partly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...South wind 10 to 15 knots veering north early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves 1 to 2 feet. .SUNDAY...North wind 15 to 20 knots becoming 15 to 25 knots late in the morning, then becoming north 15 to 25 knots in the afternoon. Slight chance of rain through the day. Waves 3 to 5 feet building to 6 to 8 feet. A small craft advisory may be needed. $$ LMZ645-210400- North Point Light to Wind Point WI- 710 PM CDT Fri Mar 20 2026 .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight veering east early in the morning. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...Southeast wind 5 to 10 knots becoming south 10 to 15 knots in the afternoon. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...South wind 10 to 15 knots veering north early in the morning. Partly cloudy through around midnight then becoming mostly cloudy. Waves 1 to 2 feet. .SUNDAY...North wind 15 to 20 knots becoming 15 to 25 knots with gusts to around 30 knots in the late morning and afternoon. Slight chance of rain through the day. Waves 3 to 5 feet building to 6 to 8 feet. A small craft advisory may be needed. $$ LMZ646-210400- Wind Point WI to Winthrop Harbor IL- 710 PM CDT Fri Mar 20 2026 .TONIGHT...North wind 10 to 15 knots easing to 5 to 10 knots late in the evening, then veering northeast after midnight veering east early in the morning. Mostly cloudy. Waves 1 to 2 feet. .SATURDAY...East wind 5 to 10 knots veering southeast late in the morning, then becoming south 10 to 15 knots in the afternoon. Mostly cloudy in the morning then becoming mostly sunny. Waves 1 to 2 feet. .SATURDAY NIGHT...South wind 10 to 15 knots veering northwest early in the morning. Partly cloudy. Waves 1 to 2 feet. .SUNDAY...North wind 15 to 20 knots becoming 15 to 25 knots with gusts to around 30 knots in the late morning and afternoon. Slight chance of rain through the day. Waves 3 to 5 feet building to 6 to 8 feet. A small craft advisory may be needed. $$ See Lake Michigan Open Waters Forecast for Monday through Wednesday.