Milwaukee is kicking off Tuesday, July 21, 2026, with clear skies and comfortably cool temperatures in the low 70s, but it will not stay that mild for long. Readings will climb into the low 80s this afternoon, with a forecast high near 82°F and a slight chance of a quick shower between 4 and 5 p.m. As the day wears on, northwest winds will strengthen and leave the lakefront noticeably choppy.
Afternoon Winds And Lakeshore Hazards
Behind a passing cold front, northwest winds are expected to reach 10 to 15 mph, with gusts in the 20 to 30 mph range. Small Craft Advisories are in effect for parts of Lake Michigan, and the National Weather Service has issued a Beach Hazards Statement that warns of life‑threatening waves of 4 to 9 feet and dangerous longshore currents from this afternoon into Wednesday, with the highest waves anticipated near Wind Point. The guidance is blunt: "Stay out of the water and away from dangerous areas like piers and breakwalls." Boaters, swimmers and anyone spending time near the shoreline are urged to use extreme caution and follow posted flags and lifeguard instructions. National Weather Service
What To Expect Through The Week
By Wednesday, July 22, 2026, conditions will feel noticeably cooler and less humid, with highs in the mid 70s and lighter north winds. Sunshine is expected to stick around through Thursday, when highs should reach around 81°F. The change will not last into the weekend, though, as warmer and more muggy air returns, bringing a chance of showers and thunderstorms late Saturday night into Sunday and a high near 87°F on Sunday. Anyone planning outdoor events or lake time this weekend should keep tabs on updated forecasts. National Weather Service
