Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740>742-281515-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
328 AM CDT Sun Jun 28 2026
TODAY
Northeast winds around 10 kt becoming southeast 10 to 15
kt by late morning, then increasing to 15 to 20 kt in the
afternoon. Slight chance of showers and thunderstorms mid to late
afternoon. Waves 1 to 3 ft.
TONIGHT
Southeast winds 15 to 20 kt. Partly cloudy. Waves 2 to
4 ft.
MONDAY
South winds 15 to 25 kt. Mostly cloudy in the morning,
then becoming partly cloudy. Waves 2 to 4 ft.
MONDAY NIGHT
South winds 15 to 25 kt becoming southwest 15 to
20 kt. Mostly clear. Waves 2 to 4 ft subsiding to 1 to 3 ft.
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