JACKSONVILLE, Fla -- Open up the windows tonight as temperatures dip into the low to mid 50s with even a few upper 40s well inland. Skies will become clear overnight leading to the start of a warming trend Wednesday with pleasant humidity levels. A sunny afternoon will help boost temperatures into the lower 80s. Highs by Thursday will reach the mid 80s then upper 80s to around 90 degrees Friday and Saturday. Other than an isolated afternoon shower or storm, there will be no significant rain before a cold front approaches Sunday.