Cold Temperatures for the Eastern U.S.; Lake Effect Snow in the Great Lakes; Heavy Rain in the Pacific Northwest
Cold temperatures will continue across much of the eastern U.S. into today. Heavy lake effect snow continues into today east of Lakes Erie and Ontario. Two Pacific cold fronts will cross the Pacific Northwest early this week followed by another atmospheric river. Heavy rain and gusty winds are expected through midweek, with the potential for renewed urban and river flooding. Read More >
| NWS Forecast for: Calumet Harbor IL to Gary IN (LMZ743) Issued by: National Weather Service Chicago, IL Last Update: 938 AM CST Mon Dec 15 2025 | |
Rest Of Today: Southwest winds to 30 kt this morning diminishing to 15 to 25 kt this afternoon. Mostly cloudy. Waves 3 to 5 ft subsiding to 1 to 3 ft. Tonight: Southwest winds 10 to 15 kt in the evening diminishing to around 10 kt overnight. Partly cloudy. Waves 1 to 2 ft. Tuesday: Southwest winds 10 to 20 kt increasing to 20 to 25 kt. Mostly cloudy in the morning, then becoming partly cloudy. Waves 1 to 3 ft building to 2 to 4 ft. Tuesday Night: Southwest winds 20 to 25 kt becoming west 15 to 20 kt overnight. Mostly cloudy. Waves 3 to 5 ft subsiding to 2 to 4 ft. | |
| Zone Forecast: Calumet Harbor IL to Gary IN (LMZ743) | |
Visit your local NWS office at: https://www.weather.gov/lot |