The leading edge of an incoming storm system is producing showers and thunderstorms over Minnesota. Saturday evening, there will be a potential of isolated showers as a warm from progresses north of our area. That warm front will usher in remarkably higher temperatures and humidity levels Sunday. A developing cold front currently over the Upper Plains will move east and arrive in northern Lower Michigan Sunday, bringing a higher chance of scattered storms.
High temperatures today reached 80 degrees in Alpena, 84 degrees in Chicago and 91 degrees in Rapid City. That hotter air mass is heading in our direction Sunday.
Saturday, the daytime hours will be dry and bright. A low chance of isolated showers will arrive Saturday evening. The cold front associated with the storm system moving across the Upper Plains will bring a higher chance of rain and thunderstorms Sunday afternoon through nighttime. A weak disturbance that follows will bring another around of showers/thunderstorms Monday.
Saturday: Mostly sunny, except a slight chance of showers in the evening. Predawn lows will be near 59 degrees. Temperatures will rise to the lower 70s in the late-morning. Afternoon highs will reach about 85 degrees. Early-evening temperatures will be near 80 degrees.
Sunday: Chance of showers and thunderstorms afternoon through nighttime, and very humid. Early-morning temperatures will be in the upper 60s. Late-morning temperatures will be in the middle 70s. Afternoon highs will heat up to 88 degrees. Early-evening temperatures will remain quite sticky, in the lower 80s.
Monday: Chance of showers and thunderstorms mainly during the daytime hours. Predawn temperatures will start off close to 70 degrees. Late-morning temperatures will be in the upper 70s. Highs will get close to 87 degrees in the late-afternoon.