The air overnight will be mild with mostly cloudy skies and low temperatures in the low to mid-forties. Low pressure tracking just to the North will drag up more moisture and trigger showers with a few thunderstorms around Southeast Wisconsin on Thursday, mainly in the afternoon. That unsettled pattern will stick around through Thursday night and Friday with several rounds of showers likely. Cooler air wraps in behind the system that will lead to fall-like conditions with highs in the 40's and wind chills in the upper-30's for the end of the work week. The weekend is looking cool also with high temperatures in the lower-fifties.