Overview

• Tuesday night will be mainly clear and comfortably warm with lows in the mid-60s inland and near 70°F along the lake.
• Wednesday’s highs will climb into the upper 80s and may reach 90°F under low to moderate humidity levels.
• The northern suburbs face a marginal level 1 severe-storm risk with isolated afternoon thunderstorms carrying possible 50–60 mph winds over about 20–30% of the area.
• Lake Michigan water temperatures are elevated and wave heights are expected to stay under one foot, creating ideal conditions for mariners.
• Strong midday sun will pose a sunburn risk in under 20 minutes at peak UV intensity, Dr. Bryan Schultz warns.