Severe Weather and Heavy Rainfall from the Midwest to the Ohio Valley; Mid-Summer Heat Continues
Severe thunderstorm and heavy rainfall threats will persist from the Midwest to Lower Great Lakes through Monday, shifting into the Ohio Valley and Central Appalachians Monday evening into Tuesday. Mid-summer heat will continue across much of the CONUS this week, with record highs possible well into the 100s across the south-central High Plains. Read More >
| NWS Forecast for: Winthrop Harbor to Wilmette Harbor IL (LMZ740) Issued by: National Weather Service Chicago, IL Last Update: 339 AM CDT Mon Aug 10 2026 | |
Today: West winds 10 to 15 kt becoming northeast around 10 kt by midday and east this afternoon. Slight chance of a shower or thunderstorm this morning, then a chance of showers and thunderstorms in the afternoon. Waves 1 to 2 ft. Tonight: East winds around 10 kt. Chance of showers and thunderstorms. Waves around 1 ft. Tuesday: Southeast winds around 10 kt becoming east in the afternoon. Showers and thunderstorms likely. Waves 1 to 2 ft. Tuesday Night: Northeast winds around 10 kt. Chance of showers and thunderstorms in the evening, then chance of showers and slight chance of thunderstorms overnight. Waves around 1 ft. | |
| Zone Forecast: Winthrop Harbor to Wilmette Harbor IL (LMZ740) | |
Visit your local NWS office at: https://www.weather.gov/lot |