Cooler, less humid air moves in for Sunday

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The cold front that triggered showers and strong to severe thunderstorms as it moved east through the Chicago area Saturday night will be followed by the leading edge of a much cooler, less humid Canadian-source high pressure air mass Sunday.
With a northwest breeze, Sunday’s temperatures and dew points will be about 10 degrees lower than Saturday’s.
With a strong northwesterly jet stream flow aloft, the cooler, drier conditions will be reinforced by periodic convective cloud-producing impulses rotating through the area Monday and Tuesday.
By Wednesday, mostly sunny skies will belie low pressure moving out of the central Plains that looks to bring cloudiness and a good chance of showers/thunderstorms later that night.