A Frost Advisory has been issued once again for Green, Rock, Winnebago, Boone, McHenry and DeKalb counties late Sunday night through early Monday morning. Freeze Warnings have been issued for southeast Wisconsin, nearly all of Michigan, northern Indiana and Ohio. High pressure centered over Ontario, Canada will keep temperatures in the mid, and possibly low, 30's over parts of the Great Lakes Sunday night.
Counties west of Rockford are not included in the advisory as of yet because temperatures are expected to warm slightly, with the possibility of a little more cloud cover, during the overnight. However, to be on the safe side it may be a good idea to cover or bring in any plants that may be sensitive to the cold. This should hopefully be the last frost/freeze of the season.