Refrigerator Temperature and Where to Store Food, Per USDA and FDA
Keep the refrigerator at 40°F (4.4°C) or below and the freezer at 0°F (-17.8°C), and confirm it with a thermometer, because most fridge dials do not show a real temperature. The FDA says few refrigerator controls display actual temperatures and recommends a freestanding appliance thermometer for the fridge and one for the freezer. Placement matters less than temperature, but a few rules apply. Guidance below is current as of October 2026.
1. Why 40°F
FSIS explains that bacteria grow fastest between 40°F and 140°F, the "Danger Zone," and some can double in number in as little as 20 minutes. The FDA puts the room-temperature version this way: at room temperature, the bacteria that cause foodborne illness can double every 20 minutes. A refrigerator at 40°F or below slows that growth. It does not stop it. FSIS notes that Listeria monocytogenes can multiply in the refrigerator over time, and that spoilage bacteria also grow in the cold, which is why storage time limits exist.
The CDC gives the same two numbers, 40°F for the refrigerator and 0°F for the freezer. If the refrigerator has no built-in thermometer, it says to keep an appliance thermometer inside.
2. How to check the temperature
- Buy an inexpensive appliance thermometer. FSIS says these are designed to be accurate at cold temperatures.
- Put one in the refrigerator and one in the freezer, as the FDA suggests, and check them often.
- If the reading is above 40°F, adjust the setting. The FDA says the thermometer lets you adjust the refrigerator or freezer if necessary.
- Keep doors closed tightly, do not open them more than necessary, and close them quickly.
A thermometer also helps in a power outage. FSIS says if the refrigerator is still at 40°F when the power returns, the food is safe, and food held above 40°F for more than 2 hours should not be eaten.
3. Which shelf for what
FSIS makes a point that surprises people: the temperature in a refrigerator should be 40°F or below throughout, so any place is safe for storing any food. What differs is the risk of dripping. FSIS says raw meat, poultry, and seafood should be in a sealed container or wrapped securely so raw juices do not contaminate other foods.
The CDC is more specific for chicken: store it on the bottom shelf of the refrigerator in a sealed container or wrapped securely so the juice does not leak onto other foods. Putting it on the bottom is common sense. If something leaks, it drips onto the shelf below it, not onto lettuce or leftovers.
How that plays out, per the sources above:
| Where | What to put there |
|---|---|
| Bottom shelf | Raw chicken (CDC); raw meat and seafood should likewise be sealed or wrapped (FSIS) |
| Crisper drawers | Fruits and vegetables (FSIS says vegetables need higher humidity and fruits lower) |
| Meat drawer, if you have one | An adjustable-temperature drawer keeps meats and cheese very cold without freezing, according to FSIS |
| Door | Not for perishable foods |
On the door, FSIS is direct: do not store perishable foods there. FSIS says the temperature of the door bins fluctuates more than the temperature in the cabinet. Shelf placement for eggs follows the same rule, in the carton on a shelf.
4. Habits the FDA recommends
- Do not overpack. Cold air has to circulate around food to keep it chilled.
- Wipe up spills right away, especially drips from thawing meat. This reduces Listeria growth and cross-contamination.
- Keep food covered in containers or sealed bags, and check leftovers daily for spoilage.
- Clean the refrigerator often, as part of your regular kitchen cleaning.
- Put groceries away quickly. Perishables should not sit out more than 2 hours, or 1 hour if the air temperature is above 90°F. Your car is probably hotter than a room.
- Hot food can go straight in. The FDA says putting hot food in the fridge does not harm the appliance. Divide large amounts into small, shallow containers so they cool faster.
5. How long raw food keeps
Temperature is only half of the rule. FSIS publishes storage times for refrigerated foods held at 40°F:
| Food | Refrigerator |
|---|---|
| Raw ground beef, turkey, veal, pork, lamb | 1 to 2 days |
| Stew meat | 1 to 2 days |
| Steaks, chops, roasts | 3 to 5 days |
| Whole chicken or turkey, or parts | 1 to 2 days |
| Raw sausage from meat or poultry | 1 to 2 days |
| Fresh fish and shellfish | 1 to 2 days |
| Bacon | 7 days |
| Hot dogs, opened package | 1 week |
| Luncheon meats, opened package | 3 to 5 days |
FSIS lists these as short but safe time limits to keep home-refrigerated food from spoiling. The times assume the refrigerator is holding 40°F, which is another reason to check it with a thermometer.
6. Why you cannot judge by smell
FSIS separates two kinds of bacteria. Pathogens that cause illness generally do not change the taste, smell, or look of food, so you cannot tell they are present. Spoilage bacteria do change taste and smell, and eating spoiled food is unpleasant, but it probably would not make you sick. So a food that smells fine is not proof of safety, and a fridge that is a few degrees too warm will not announce itself either.
7. Key takeaways
- Fridge at 40°F or below, freezer at 0°F or below, verified with an appliance thermometer in each.
- FSIS says the whole fridge should be 40°F or below, so any spot is safe if the food is wrapped; the door is the exception for perishables.
- The CDC says raw chicken goes on the bottom shelf, sealed.
- Do not overpack, wipe spills at once, and keep food covered.
- Use raw ground meat, poultry, and fish within 1 to 2 days, and steaks, chops, and roasts within 3 to 5 days.