The comfortable weather from the weekend will carry over into Memorial Day with temperatures warming into the low to mid 70's under partly cloudy skies. An upper level low spinning north of the Great Lakes will be the focus for showers and thunderstorms over the Great Lakes and upper Midwest during the afternoon. Locally, a cool front will move through southern Wisconsin and northern Illinois during the day Monday. Limited instability ahead of the front will limit overall rain and thunderstorm chances, but a pop up shower and thunderstorm are definitely possible with the heating of the day Monday afternoon and early evening. There may even be a quick sprinkle before sunrise Monday.
The feature in the atmosphere responsible for those showers is currently producing scattered showers and thunderstorms over the northern Plains and upper Midwest Sunday evening. As this 'mini' low swings southeast tonight and tomorrow, clouds will gradually build ahead of it, helping to produce an isolated shower or two during the day.
The same happens Tuesday until high pressure slides in from the northwest late Tuesday evening and Wednesday. So for Memorial Day festivities, expect limited impact during the morning and only a slight shower/thunder chance during the afternoon and early evening.
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