What Temperature Should a Refrigerator Be Set At

The Correct Refrigerator Temperature

The FDA recommends keeping your refrigerator at or below 40°F (4°C). The ideal range for food safety and freshness is 35–38°F (1.7–3.3°C). At this temperature, bacterial growth is significantly slowed, keeping food safe and fresh for longer.

The Correct Freezer Temperature

Your freezer should be set at 0°F (-18°C). At this temperature, food is preserved indefinitely from a safety standpoint (though quality degrades over time).

Why the Dial Setting Isn't Enough

Most refrigerators have a dial numbered 1–5 or 1–7, not an actual temperature readout. These dials are notoriously inaccurate — the actual temperature can vary significantly from what the dial suggests, and it changes with how full the refrigerator is, how often it's opened, and the ambient room temperature.

The only way to know your actual refrigerator temperature is to measure it with a thermometer. A digital refrigerator thermometer gives you an accurate, real-time reading of both your refrigerator and freezer temperatures. The max/min record function shows the highest and lowest temperatures reached, revealing fluctuations you'd otherwise miss. The large LCD screen is easy to read, and the magnetic back lets you attach it to the fridge door. A 2-pack lets you monitor both the fridge and freezer simultaneously.

Where to Place the Thermometer

Place the thermometer in the middle of the refrigerator on the middle shelf — this gives the most representative reading. Avoid placing it near the door (too warm) or the back wall (too cold).

What Happens If Your Refrigerator Is Too Warm?

• Bacterial growth accelerates significantly above 40°F
• Food spoils faster
• Dairy products sour more quickly
• Leftovers become unsafe sooner

What Happens If Your Refrigerator Is Too Cold?

• Produce freezes and becomes mushy
• Lettuce and delicate greens freeze and deteriorate
• Eggs can freeze and crack
• Beverages may freeze

How to Adjust Your Refrigerator Temperature

1. Place a thermometer in the middle of the refrigerator
2. Wait 24 hours for an accurate reading
3. Adjust the dial up or down as needed
4. Wait another 24 hours and check again
5. Repeat until the temperature is consistently in the 35–38°F range

Final Thoughts

The correct refrigerator temperature is 35–38°F (1.7–3.3°C). Don't rely on the dial — use a digital thermometer to measure the actual temperature and adjust accordingly. This simple step significantly extends food life and improves food safety.