Chicago, IL - LMZ741 - 8/21/2026 3:27 AM
Wilmette Harbor to Northerly Island IL
TODAY
Southwest winds 5 to 10 kt becoming south 10 to 15 kt in the afternoon. Chance of showers and thunderstorms in the afternoon. Waves 1 to 2 ft.
TONIGHT
Southwest winds 10 to 15 kt becoming west overnight. Chance of showers and thunderstorms, mainly in the evening. Waves 1 to 3 ft.
SATURDAY
Northwest winds 15 to 20 kt becoming north in the afternoon. Slight chance of showers and thunderstorms in the afternoon. Waves 1 to 3 ft building to 2 to 4 ft.
SATURDAY NIGHT
North winds 10 to 20 kt. Slight chance of showers and thunderstorms in the evening. Waves 2 to 4 ft building to 3 to 5 ft.