What is the ideal maximum temperature for refrigerator storage?

The ideal maximum temperature for refrigerator storage is 40°F. This temperature is critical for food safety because it helps to slow down the growth of bacteria, which can proliferate rapidly at higher temperatures. Keeping food stored at or below 40°F ensures that perishable items, such as dairy, meats, and prepared foods, remain safe to consume for a longer period.

Refrigerators set at this temperature can effectively maintain food quality while keeping harmful bacteria in check. Temperatures above this level, such as 50°F, significantly increase the risk of foodborne illnesses, as many pathogens thrive in those warmer conditions. Conversely, while 32°F is the freezing point of water and suitable for some freezing items, it is too low for storing most perishables, which do not benefit from freezing temperatures. Maintaining the refrigerator at or below 40°F is thus the best practice for ensuring food safety in storage.