Big Warmup Sunday and Monday

It will be mostly cloudy tonight with areas of patchy fog developing toward dawn. The low will be around 34 degrees with a light southeast wind. On Friday there will be some early morning patchy fog. Then, it will be partly cloudy with a high around 47 degrees. On Friday night fog will re-develop in the evening and become dense before midnight continuing through the overnight. The low will be around 33 degrees with light easterly winds. High pressure easing across southern Canada just to the north of the Great Lakes will nudge a cold front southward through the area later tonight, and the front will become stationary east/west near Interstate 80 to our south through Friday.  That is the reason for the temporary trend toward cooler daytime temperatures on Friday.  However, on Saturday morning, the front will lift northward across the area and off top the northeast.  With increasing amounts of moisture in the lowest levels of the atmosphere, there will be fog development again on Friday night that will become dense by midnight.  That thick fog will likely persist into at least the mid morning hours on Saturday. Gulf moisture will be feeding across the Stateline on Saturday. It will be breezy and warmer with some drizzle and light rain showers. The high on Saturday is expected to be around 54 degrees under mostly cloudy skies.  It will be mostly sunny, breezy and  very mild on Sunday with a high near 60 degrees. It will be windy and unseasonably mild on Monday with a southwesterly wind at 20 to 30 mph.  The high temperature will be near 62 degrees.  There will be some rain showers of Monday, and there could even be an isolated thunderstorm on Monday night with the approach of a strong cold front from the west.  It will be mostly sunny, breezy, and cooler on Tuesday with a high temperature in the middle 40's.  Wednesday is expected to be the coldest day of the week.  High pressure from Canada will cause a chilly northwesterly breeze to blow south across Wisconsin.  The high will be in the middle to upper 30's on Wednesday.  Temperatures are expected to recover back up into the middle 40's  on Thursday.