This map shows the difference in temperatures.
There was a Huge temperature difference across the area today, Due to a very strong warm front that slowly moved north, To about the Polk Barron, Burnett Washburn county lines and remained there throughout the day, There was As much as a 30+ degree temperature difference at one time between the north and south! South of the front Hot Humid conditions were felt 80s and even 90s were reported, while North of the front staid much cooler 60s and a few upper 50s where reported. below of temperatures across the area. Tomorrow, The entire area should be in the warm air mass With 80s and even a few 90s possible. 
Here is a list of high temperatures reported across the entire area today.
People driving north on Highway 53 must have been able to feel the temperatures getting cooler today! There was over a 10 degree temperature difference Here is an Example Rice Lake airport sat at 81, While areas just north of Haugen, was 69 That is an amazing temperature difference for such a short distance!