Can watermelon be eaten after being refrigerated overnight?

Whether watermelon stored in the refrigerator overnight is safe to eat mainly depends on the storage method and whether it has spoiled. 1. Storage method: If the watermelon is promptly wrapped with clean plastic wrap after being cut and refrigerated, and stored for no more than 24 hours, it is generally safe to consume. However, note that refrigeration only slows bacterial growth but does not eliminate bacteria completely. 2. Signs of spoilage: If the watermelon has been kept in the refrigerator for longer than 24 hours or shows signs of spoilage such as discoloration or an unusual odor, it should not be eaten. At this point, bacteria may have multiplied significantly, and consumption could lead to food poisoning, nausea, vomiting, diarrhea, and other gastrointestinal symptoms.