| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 837 PM CDT Sun Oct 18 2026 | |
| Rest Of Tonight: South winds 10 to 15 kt becoming southwest and diminishing to 5 to 10 kt late. Clear. Waves around 1 ft. Monday: Southwest winds 5 to 10 kt becoming northeast in the afternoon. Sunny. Waves 1 ft or less. Monday Night: East winds around 5 kt. Partly cloudy in the evening then clearing. Waves 1 ft or less. Tuesday: East winds around 5 kt becoming northeast in the afternoon. Sunny. Waves 1 ft or less. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
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