Environment Canada has issued a Frost Advisory for Kingston, Odessa, Frontenac Islands, Napanee and Consecon.
Frost is expected on Saturday night and early Sunday morning.
According to Environment Canada, temperatures will fall to or just below the freezing mark overnight, resulting in frost formation.
Shortly after sunrise on Sunday morning, temperatures are expected rise back above the freezing mark.
Some locations may experience frost once again Sunday night and early Monday morning.
Environment Canada advises gardeners and farmers to cover up plants, especially those in frost-prone areas, and to take preventative measures to protect frost-sensitive plants and trees.