Split flow brings slow warm up to the Midwest

A change in the jet stream pattern this week will not only break the south from the constant, flooding rainfall, but it will also give much of the upper Midwest a break from the rain as well.

Winds in the jet stream will remain split, meaning one branch of the jet stream will shift north while the southern branch of the jet stream remains south.  This puts Northern Illinois and Southern Wisconsin right in the middle.  Temperatures will slowly warm each day, but it looks like we're going to begin the first day of Meteorological Summer slightly below average.  High temperatures will only warm to the middle and upper 60's.  The average high for the first of June should be around 77 degrees.

This type of pattern will also keep us fairly dry through much of the week.  Rain will be possible late Thursday night and into Friday, but at this moment the upcoming weekend only features an isolated shower/storm threat.