A Cool and Rainy Sunday

A weather system developing over the plains is drawing moisture northward out of the Gulf of Mexico into the Midwest. Clouds will increase overnight...lowering and thickening through time, and there may be some light rain showers over far northwestern Illinois after midnight. Rain will overspread the area on Sunday making for a wet day across the Stateline. The clouds and the rain will hold temperatures in the middle 60's. The could even be some thunderstorms as the air gets more unstable during the afternoon into Sunday evening. Rain showers will gradually end overnight. On Monday skies will become mostly sunny, and temperatures will warm up into the low 70's.  The warming trend will continue into Tuesday with a high around 76 degrees under mostly sunny skies.  A new weather system will move southeast out of the plains on Tuesday, and push across the Stateline on Tuesday night.  It will have limited moisture to work with, so only scattered showers are expected.  Cooler air will fill in behind the front on Wednesday under partly cloudy skies.  Highs will drop back to the middle to upper 60's, and lows will fall to the middle to upper 40's, but skies will be mostly sunny Thursday and Friday.  High pressure will moderate as it moves east, and by next Saturday the afternoon temperatures will be back in the low 70's under mostly sunny skies.