
Low pressure passing to the north over the Upper Midwest and Great Lakes will pull a cold front through much of Wisconsin by Monday night, and then into northern Illinois by Tuesday morning. Moisture associated with the front will be limited, but there could be enough that gets wrung out to produce a light shower or two Tuesday morning. If anything, we may just end up with a little more cloud cover during the first half of the day Tuesday. Notice how Futurecast is bringing a small shower chance along the front as it passes mid-morning Tuesday.
Following the front will be a much cooler air mass and gusty northwest winds. Temperatures will most likely fall through the 30's by Tuesday evening, and then down into the 20's by Tuesday night.
High pressure settles in locally Wednesday while a fast moving clipper system quickly moves into the High Plains Wednesday. Temperatures on Wednesday will be chilly, with highs only expected to warm into the low 30's. This will be over ten degrees below normal.

Cloud cover from that system will spread southeast Wednesday evening and night causing our skies to turn mostly cloudy as warmer air begins to spread eastward into the Great Lakes. The forecast right now looks dry, but with the arriving warm front we may have to add in a small chance for a few flurries or light mix either late Wednesday or very early Thursday. At this point, any impact from that looks minimal so we'll keep the forecast dry.
By Thanksgiving, the day will most likely start off with a few clouds (from the passing system to the north). Temperatures will be below normal, but it doesn't look overly cold. Highs will warm right around 40 degrees under partly sunny skies.

I hope everyone has a wonderful holiday week and safe travels to wherever you're headed for Thanksgiving!
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