Hazardous marine condition(s):
Hazardous Weather Outlook
LMZ740-741-132115-
Winthrop Harbor to Wilmette Harbor IL-
Wilmette Harbor to Northerly Island IL-
953 AM CDT Sun Sep 13 2026
REST OF TODAY
North winds 15 to 20 kt becoming northwest.
Scattered showers in the afternoon. Waves 2 to 4 ft.
TONIGHT
Northwest winds 10 to 20 kt. Mostly clear. Waves 2 to
4 ft subsiding to 1 to 2 ft.
MONDAY
Southeast winds 10 to 20 kt. Mostly sunny in the
morning, then becoming partly cloudy. Waves 1 to 3 ft building to
2 to 4 ft.
MONDAY NIGHT
Southeast winds to 30 kt becoming south. Chance
of showers and slight chance of thunderstorms overnight. Waves
5 to 8 ft occasionally to 10 ft. A small craft advisory will
likely be needed.
$$