Thunderstorms on Sunday Morning Could Produce Heavy Rain

A warm front over southern Illinois will move to the central part of the state by daybreak on Sunday. With warm air from the Gulf of Mexico riding up and over the front, scattered showers and thunderstorms are expected over parts of the Stateline later on tonight. As the front continues to press toward the north showers, and storms are expected to become much more widespread on Sunday morning, and may produce locally heavy rainfall.  Showers and thunderstorms will become more scattered during the afternoon, and end by the supper hour. Because of the cloud cover and rain, high's on Sunday with only reach the low 70's. It will be partly cloudy, mild, and muggy tomorrow night with a low in the middle 60's. The warm front will push to the north into Wisconsin by sunset Sunday.  It will be a mostly sunny, hot, and humid day, with a high around 90 degrees. Enjoy! A cool front will pass through the area on Tuesday afternoon with scattered thunderstorms.  The temperatures are expected to reach the low to middle 80's before the front starts cool the Stateline down later in the afternoon.  High pressure stretching from the northern plains into southern Wisconsin will clear skies out on Tuesday night, and bring the Stateline a beautiful sunny day on Wednesday with a high around 80 degrees.  The cool front will stall out across central Illinois on Wednesday night, and begin edging northward as a warm front.  Disturbances over the plains will move to the east, and may begin generating thunderstorm complexes on Wednesday night that could affect the Stateline before daybreak on Thursday.