Warm stretch ends as cooler air takes over before Memorial Day

Cooler Moving Forward:

The Stateline has been riding a stretch of beautiful, early summer-like warmth over the past few days, with afternoon highs peaking in the upper 70s and low 80s. But as is often the case this time of year, that warmth won't remain consistent. A cold front that swept through Tuesday has snatched that warmth away, setting the stage for a noticeably cooler stretch before Memorial Day weekend.   

Today starts on a much cooler note, with temperatures dipping in the low to mid 40s. That cooler air sticks around through the day, with afternoon highs only topping out in the low to mid 60s. Again, much cooler than your typically late-May standards. While it will feel noticeably different compared to the past two days, high pressure moving through will at least keep conditions pleasant with plenty of sun. We'll mix in a few clouds during the afternoon. 

Showers Return Friday:

We'll keep that cooler, quiet pattern into Thursday, with afternoon highs once again settling in the low 60s under a mix of clouds and sun. By Friday, highs may trend cooler as an easterly wind sets up, helping pull in more cloud cover and even the chance for a few passing showers. That added cloudiness and onshore flow will keep afternoon highs limited to the low 60s, round out a noticeably cooler end to the work week across northern Illinois.