After a chilly start this morning temperatures moderate Sunday as winds turn SE and then southerly, eventually allowing the area to evade the cooling effects of Lake Michigan. Strengthening southwest winds will then push the potentially warmest air of 2007 into northeast Illinois on Monday. The increased moisture content of the warmer air will lead to the development of showers and t-storms along an approaching cold front later Monday night/Tuesday. Highs are expected to climb into the mid to upper 80s by Monday afternoon and then fall through the 60s Tuesday as winds turn NE off Lake Michigan behind the southward-moving cold front.
Wednesday cold air aloft will sink, forcing the relatively mild 60° surface air to rise and condense into clouds and showers.
As the cool high pressure air mass drifts south and east, southerly flow will return with warming again by the end of the week.
--By Paul Dailey, WGN Weather Center Meteorologist
WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.
