A cold front will slide southeast through the area. There’s a 30% chance of showers and storms, mainly during the morning across northern MN, during the mid-morning in the Twin Ports, and in the late morning or afternoon across northern WI. A few storms, however, could be strong to severe, especially in northern WI where a marginal risk of severe storms is in place. Winds trend SW around 5-20 mph, but turn NW as the front moves through. Highs range from the upper 70s north to the mid 80s south.
A weak area of high pressure moves in, clearing out the skies and calming the winds. Winds will become calm, which could lead to some patchy fog overnight. Lows fall back into the 50s, but some upper 40s are possible north.
The high slowly moves southeast, but skies will remain mostly sunny across the area. Winds will remain light out of the NW turning S into the afternoon and evening hours. Skies remain mostly clear into Saturday night. Highs top out in the mid 70s to mid 80s, with lows in the upper 50s to mid 60s.
The heat and humidity really starts kicking in Sunday. Skies begin partly cloudy to mostly sunny, but clouds will increase as a low pressure and warm front approaches from the west. This brings a 30%-40% chance of showers and storms, especially from the late afternoon through the overnight. Some of those storms could be strong to severe, so you will want to stay with CBS 3 for the latest. Highs will be in the mid 80s to near 90. Dewpoints will be in the mid to upper 60s, so heat indices will get into the 90s.
This is when I think the worst of the heat and humidity will be. We’ll see a mix of clouds and sun and a 30% chance of scattered storms. Some of those storms could turn strong to severe once again, so something to watch closely. Highs top out in the mid 80s to the low to mid 90s. Dewpoint levels will be in the mid 60s to low 70s, creating heat indices in the 90s once again, but could approach 100 in our southern areas.
The good news is that the heat should taper a touch, but there will still be chances of showers and storms scattered about, especially Wednesday and Wednesday night. Highs will be in the mid to upper 80s Tuesday, but falling back into the upper 70s to mid 80s Wednesday and Thursday.