The recent cold snap moderates over the weekend as the chilly Canadian high of recent days edges east and moderates under increasingly potent March sunshine. In its wake, several disorganized weather systems follow, none of which develops with any Gulf moisture to employ. As a result, the overall pattern should be dry, but with good enough precipitation credentials to keep at least a chance of rain or snow with each frontal passage.
By Sunday, retreating high pressure leaves somewhat of a void in weather systems, leaving the default winds southwest with origins in the toasty southern Plains. Thereafter, a reinforcing northwest jet stream brings several intrusions of weak arctic air, each colder than its predecessor, with the end result of some very cold air over the Midwest by Wednesday and Thursday.
WGN-TV Chief Meteorologist Tom Skilling and the WGN Weather Center staff provide daily coverage of weather in the Chicago area.
