USFDA Optimal Temp Ranges

Optimal Refrigerated Storage Conditions (USFDA Guidance)

Proper cold storage is essential for preventing bacterial growth and keeping perishable foods safe. The U.S. FDA provides clear temperature recommendations for both refrigerators and freezers to maintain food quality and reduce risk of foodborne illness.

Refrigerator Storage Conditions

• Recommended Temperature: 40°F (4°C) or below

  This slows the growth of harmful bacteria such as Salmonella, E. coli, and Listeria.

Best Practices

• Avoid overloading—cold air must circulate consistently.

• Store raw meat, poultry, and seafood on the bottom shelf to prevent cross-contamination.

• Keep the refrigerator door closed as much as possible to maintain stable temperatures.

Freezer Storage Conditions

• Recommended Temperature: 0°F (-18°C) or below

  At this temperature, bacteria cannot grow and food quality is better preserved.

Best Practices

• Package items tightly to prevent freezer burn.

• Label and date all stored items for tracking.

• Keep the freezer full but not packed to the point that airflow is restricted.

Why These Temperatures Matter

When perishable foods rise above 40°F, they enter the Danger Zone (40°F–140°F), where bacterial growth accelerates.

Freezing at or below 0°F halts microbial growth and maintains nutritional and textural quality.

Quick Reference Table

US Food and Drug Administration. Are you Storing Food Safely. http://www.fda.gov/ForConsumers/ConsumerUpdates/ucm093704.htm