Coastal Waters Forecast for Wind Point WI to Winthrop Harbor IL (LMZ646) (Text-Only)
NWS Forecast for: Wind Point WI to Winthrop Harbor IL (LMZ646)
Issued by: National Weather Service Milwaukee, WI
Last Update: 510 AM CDT Tue Apr 21 2026
Print




Today: Southwest wind 15 to 20 knots easing to 10 to 15 knots with gusts to around 20 knots late in the morning, then becoming southwest 10 to 15 knots with gusts to around 20 knots early in the afternoon becoming southwest 10 to 15 knots late in the afternoon. Isolated showers early in the afternoon. Scattered sprinkles late in the afternoon. Waves 2 to 4 feet subsiding to 1 to 2 feet in the afternoon.

Tonight: Southwest wind 5 to 10 knots veering north early in the morning. Patchy fog after midnight. Waves around 1 foot.

Wednesday: North wind 5 to 10 knots veering east late in the afternoon. Patchy fog in the morning. Waves around 1 foot.

Wednesday Night: Southeast wind 5 to 10 knots veering south early in the morning. Partly cloudy. Waves around 1 foot.







Zone Forecast: Wind Point WI to Winthrop Harbor IL (LMZ646)

Visit your local NWS office at: https://www.weather.gov/mkx