Chicago Nearshore Marine Forecasts by Zone

 
 

 
 
 
 
 
FORECAST For Wilmette Harbor to Northerly Island (LMZ741)
 
 
 
 
 LMZ740>745-101515-
 Winthrop Harbor to Wilmette Harbor IL-
 Wilmette Harbor to Northerly Island IL-
 Northerly Island to Calumet Harbor IL-
 Calumet Harbor IL to Gary IN-Gary to Burns Harbor IN-
 Burns Harbor to Michigan City IN-
 220 AM CDT Thu Sep 10 2026
 

 TODAY
 North winds around 10 kt becoming northeast this
 afternoon. Mostly cloudy. Waves 1 to 3 ft.

 TONIGHT
 East winds around 10 kt becoming southeast overnight.
 Becoming clear this evening. Waves 1 to 3 ft.

 FRIDAY
 Southeast winds around 10 kt becoming east in the
 afternoon. Sunny. Waves 1 to 2 ft.

 FRIDAY NIGHT
 Southeast winds around 10 kt becoming south
 overnight. Partly cloudy. Waves 1 to 3 ft.
 
 $$