The ideal temperature for a fridge is at or below 40°F (4°C) . If your fridge has a numbered dial setting, the highest number is usually the coldest, but this can vary between brands and models, so its best to check your appliance user manual. If youre always storing plenty of food, you need the colder settings (3 to 4). If youre not storing as much, choose between 2 and 3. Its important to note that a lower fridge temperature does not equal better food storage. A refrigerator’s temperature usually ranges from 0.5 to 4 degrees Celsius (33 to 39 in Fahrenheit) . It also matters on which shelf the food is stored. In older appliances, the higher you go, the colder it gets. If the temperature is very low, ice will form, and it may prevent air circulation. Ice could also cause the fridge’s inner thermostat to malfunction, leading to electronics failure. If ice accumulates, knock it off, lower the temperature, and bear in mind that the change will take place in at least 8 hours.