| NWS Forecast for: Northerly Island to Calumet Harbor IL (LMZ742) Issued by: National Weather Service Chicago, IL Last Update: 903 PM CST Sun Nov 1 2026 | |
Rest Of Tonight: Southeast winds 10 to 15 kt. Patchy drizzle after midnight. Waves 1 to 3 ft. Monday: South winds 10 to 15 kt increasing to 15 to 20 kt. patchy drizzle in the morning, then chance of showers in the afternoon. Waves 2 to 4 ft. Monday Night: South winds 15 to 25 kt increasing to 20 to 25 kt. Chance of showers in the evening, then slight chance of showers overnight. Waves 3 to 5 ft building to 3 to 6 ft occasionally to 8 ft. Tuesday: South winds 20 to 25 kt. Slight chance of showers in the morning, then chance of showers and slight chance of thunderstorms in the afternoon. Waves 3 to 6 ft occasionally to 8 ft. | |
| Zone Forecast: Northerly Island to Calumet Harbor IL (LMZ742) | |
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