| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 302 PM CDT Fri Mar 13 2026 |  |
Late This Afternoon: West gales to 45 kt with some storm force gusts to 50 kt. Mostly sunny. Waves 5 to 8 ft occasionally to 10 ft. Tonight: Northwest gales to 40 kt diminishing to 10 to 20 kt. Partly cloudy. Waves 4 to 7 ft occasionally to 9 ft subsiding to 3 to 5 ft. Saturday: North winds 10 to 15 kt becoming east late. Slight chance of snow in the afternoon. Waves 3 to 5 ft subsiding to 1 to 3 ft. Saturday Night: East winds 15 to 20 kt becoming southeast 20 to 25 kt. Chance of rain and snow in the evening, then chance of rain overnight. Waves 3 to 5 ft building to 5 to 8 ft occasionally to 10 ft. Sunday: Southeast winds to 30 kt becoming south and increasing to 35 kt gales in the afternoon. Chance of rain in the morning, then rain and slight chance of thunderstorms in the afternoon. Waves 5 to 8 ft occasionally to 10 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |