What's the optimal temperature of a refrigerator?
To ensure that your refrigerator is doing its job, keep its temperature between 1 and 4°C (34 and 39°F), with recommended settings of 2.5°C (37°F), where you are at an optimal distance from both the freezing temperature of 0°C (32°F) as well as far below the maximum safe temperatures of 4°C (39°F).
From FoodSafety.Gov: The optimum refrigerator temperature is 40 degrees Fahrenheit or below.
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