Storm Impacting the Southwest U.S.; Above Normal Temperatures Further East

A storm system will shift across the southwest U.S. through Thursday with widespread showers and isolated thunderstorms. Isolated flooding is possible. High-elevation snow is also expected in parts of Nevada and the southern Sierra Nevada range. East of this storm, above average temperatures will challenge or break daily record high temperatures this week in the southern Plains and southeast U.S. Read More >

Coastal Waters Forecast for Winthrop Harbor to Wilmette Harbor IL (LMZ740) (Text-Only)
NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740)
Issued by: National Weather Service Chicago, IL
Last Update: 837 AM CST Tue Nov 18 2025
Print




Rest Of Today: Southeast winds 20 to 25 kt. Chance of showers and drizzle. Waves 4 to 6 ft occasionally to 8 ft.

Tonight: East winds 10 to 15 kt becoming northeast. Slight chance of drizzle in the evening. Waves 4 to 6 ft occasionally to 8 ft subsiding to 2 to 4 ft.

Wednesday: East winds 10 to 15 kt becoming southeast. Mostly cloudy. Waves 2 to 4 ft subsiding to 1 to 3 ft.

Wednesday Night: South winds around 5 kt becoming southwest overnight. Mostly cloudy. Waves 1 to 2 ft.







Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740)

Visit your local NWS office at: https://www.weather.gov/lot