Thursday, June 25, 2026 — Milwaukee is waking up under patchy, locally dense fog after overnight rain, with temperatures hanging in the low 60s and visibility dropping in river valleys and low spots. The fog should thin out after sunrise, giving way to partly sunny skies and a high near 73°F, though there is still a 30% chance of scattered afternoon showers or thunderstorms in the mix.
This Morning: Fog And The Commute
Through about 8 a.m. Thursday, June 25, expect pockets of dense fog to slow the morning drive on I-94 and other main routes. If you are heading out early, plan on taking it easy: drive at reduced speeds, use low beams instead of high beams, and give yourself extra time in low-lying neighborhoods and near waterways where the fog tends to cling.
Afternoon: Spotty Showers And Lightning
By afternoon, partly sunny skies should dominate, but a few scattered showers and thunderstorms are still on the table, mainly east of I-39. Northwest winds will run around 5 to 10 mph, and the high should land near 73°F. Storms look to be hit-or-miss and mainly a lightning concern rather than a widespread severe outbreak, according to the National Weather Service.
Weekend And Early Week: Cool Start Then A Big Warm-Up
Friday stays on the cool and mostly cloudy side with a high near 68°F, a classic light-jacket kind of day. Saturday should brighten up, with more sun and highs in the mid-70s. By Sunday, temperatures climb into the low 80s, setting the stage for a serious early-week heat spike.
Forecasts show a sharp warm-up arriving Monday and Tuesday, with highs pushing into the upper 90s on Monday, June 29, 2026, and near 99°F on Tuesday, June 30, 2026. Heat indices are expected to run around 100°F. For anyone who does not have reliable air conditioning, the City of Milwaukee maintains a list of cooling sites and heat-safety resources at the City of Milwaukee.
How To Prepare
As the heat builds next week, drink plenty of water, avoid heavy outdoor work during the hottest part of the day, and shift strenuous activity to the morning or evening when you can. Check in on older neighbors, young children and pets once temperatures start soaring, and keep an eye on local alerts and the National Weather Service forecast if you have outdoor plans through Tuesday, June 30, 2026.
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