Saturday
A cold front moves through southeast Wisconsin on Saturday, bringing a chance for light precipitation mainly during the morning into early afternoon. Temperatures climb into the mid to upper 20s, with south winds ahead of the front shifting northwest at 10-20 mph behind it. Precipitation may begin as light drizzle or freezing drizzle, especially near Lake Michigan, before quickly transitioning to light snow. Any accumulation looks minimal, but a few slick spots are possible on untreated roads and elevated surfaces.
Saturday Night
High pressure builds in Saturday night, ending any lingering flurries and allowing skies to partially clear. Overnight lows fall to the upper teens, with northwest winds easing to 5-10 mph. Wind chills dip into the single digits overnight, but conditions remain quieter compared to earlier in the day.
Sunday
Sunday brings dry but seasonably cool conditions as high pressure remains in control. Skies are partly cloudy, with afternoon highs reaching the mid 20s. Winds turn southwest at 5-10 mph, setting the stage for a gradual warming trend heading into next week. Overall, a calm and quiet winter day.
Sunday Night
Clouds increase Sunday night as warm air advection begins to strengthen. Temperatures hold steady or slowly rise overnight, with lows in the lower to mid 20s. Southwest winds increase slightly to 10-15 mph, preventing a sharp drop in temperatures.
Monday
Monday features milder air and increasing clouds as a weak disturbance passes mainly north of the area. High temperatures rise into the upper 20s to near 30, with southwest winds at 10-15 mph. A slight chance for light rain or snow develops, mainly north of I-94, though most areas remain dry. Any precipitation would be light and spotty.
Monday Night
Monday night stays relatively mild for late December, with lows in the mid to upper 20s. Southwest winds continue at 10-15 mph, and a slight chance for light rain or snow lingers north of Milwaukee before tapering off late.
Tuesday
A noticeable warmup arrives Tuesday as strong warm air advection overspreads southern Wisconsin. Skies are partly cloudy, and highs climb into the upper 30s to lower 40s. South to southwest winds increase to 15-25 mph, making it feel more like early spring than late December.
Wednesday
Wednesday continues the unseasonably warm trend, with highs reaching the low to mid 40s, and possibly warmer near the Wisconsin–Illinois border. South winds remain breezy at 15-25 mph, with increasing clouds as the next weather system organizes to the west. Dry conditions are expected during the day, with precipitation chances holding off until later in the week.
