A bit of a cool down: A quiet day with temperatures near normal in the middle 30s. However, a weather system moves in later today and into tonight with colder air filtering in behind it. The front will change our flow from the southwest to the north which will take highs today down to the upper 20s tomorrow. Here you can see the northern low as it takes most of the energy north but...
You can see the colder air get dragged down to the south. The core of the coldest air, (the red color) shows the extremely cold air is not far away.


Interesting start next week: A huge weather system is moving through the plains early Sunday with some warmer air ahead of it. Take a look at how closely the isobars are packed together. This what is called a 'tight gradient' in meteorological terms. It means there is a big change in pressure and it is a red flag for the forecaster that there will be some gusty winds. The slope becomes pretty steep ahead of this weather system as cold air is allowed to dump into the plains while the warmer air gets forced into the Great Lakes area.
Moderately cold air moves into the area by late Monday and into Tuesday.