Chicago Nearshore Marine Forecasts by Zone

 
 

 
 
 
 
 
FORECAST For Wilmette Harbor to Northerly Island (LMZ741)
 
 
 
 
 LMZ741-742-052115-
 Wilmette Harbor to Northerly Island IL-
 Northerly Island to Calumet Harbor IL-
 1009 AM CDT Fri Jun 5 2026
 
 SMALL CRAFT ADVISORY IN EFFECT UNTIL 7 PM CDT THIS EVENING
 

 REST OF TODAY
 Southwest winds 20 to 25 kt. Chance of showers
 and slight chance of thunderstorms late in the morning, then
 showers and a chance of thunderstorms in the afternoon. Waves 1 to
 3 ft.

 TONIGHT
 Southwest winds 10 to 20 kt. Chance of showers and
 thunderstorms. Waves 1 to 2 ft.

 SATURDAY
 Southwest winds around 10 kt becoming east in the
 afternoon. Isolated showers and thunderstorms in the afternoon.
 Waves 1 ft or less.

 SATURDAY NIGHT
 East winds 5 to 10 kt becoming northeast.
 Partly cloudy. Waves 1 ft or less.
 
 $$