| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 949 PM CDT Tue May 12 2026 | |
Rest Of Tonight: Southwest winds 20 to 25 kt becoming northwest. Mostly cloudy late in the evening then clearing. Waves 2 to 4 ft building to 3 to 5 ft toward morning. Wednesday: Northwest winds 20 to 25 kt becoming north 15 to 20 kt. Mostly cloudy. Waves 3 to 5 ft. Wednesday Night: North winds 10 to 20 kt becoming northwest and diminishing to around 10 kt. Decreasing clouds. Waves 3 to 5 ft subsiding to 2 to 4 ft. Thursday: North winds around 10 kt. Sunny. Waves 1 to 3 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |