LMZ740>742-131200-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
Northerly Island to Calumet Harbor IL-
903 PM CDT Mon Oct 12 2026
REST OF TONIGHT
Southwest winds 10 to 20 kt. Partly cloudy.
Waves 1 to 3 ft.
TUESDAY
West winds 10 to 15 kt becoming east 5 to 10 kt in the
afternoon. Mostly sunny. Waves 1 to 3 ft.
TUESDAY NIGHT
Northeast winds around 10 kt becoming north.
Chance of showers and slight chance of thunderstorms late in the
evening, then showers likely and a chance of thunderstorms
overnight. Waves 1 to 3 ft.
WEDNESDAY
Northeast winds 10 to 15 kt increasing to 15 to
20 kt. Chance of showers in the morning. Waves 2 to 4 ft building
to 3 to 5 ft.
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