Dangerous Heat and Heavy Rainfall into the Weekend
Hot temperatures and high humidity are forecast to continue across the mid-Mississippi Valley into this weekend. Heat Advisories remain in effect. Heavy to excessive rainfall occurring at times through the weekend could bring areas of flooding to parts of the northern Rockies, upper Midwest, central Great Lakes, and southern New England. Read More >
| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 1020 AM CDT Sun Sep 20 2026 | |
Rest Of Today: Northeast winds 20 to 25 kt increasing to 30 kt. Showers and slight chance of thunderstorms. Waves 4 to 6 ft occasionally to 8 ft building to 7 to 10 ft occasionally to 13 ft. Tonight: Northeast winds to 30 kt becoming east. Slight chance of showers overnight. Waves 7 to 10 ft occasionally to 13 ft. Monday: East winds to 30 kt becoming northeast. Chance of showers in the morning, then slight chance of showers in the afternoon. Waves 7 to 10 ft occasionally to 13 ft. Monday Night: Northeast winds to 30 kt. Slight chance of showers. Waves 7 to 10 ft occasionally to 13 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
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