Why Does My Fridge Temperature Keep Changing? (And How You Can Fix This)

This post may contain affiliate links and we may earn a commission, but it won’t affect our product choices.

Table of Contents

If your fridge temperature keeps changing, it’s more than an annoyance—it’s a risk to your food’s safety.

The ideal fridge temperature should be 40°F (4°C) or lower to prevent bacterial growth and food spoilage 🦠.

Multiple factors like frequent door opening and seasonal changes can affect it, but the good news is, they can be managed 🔄.

What is the Ideal Normal Fridge Temperature?

why does my fridge temperature keep changing
fridge temperature keep changing
Too Cold ❄️Below 40°F/4°CFreezes veggies and changes their texture.
Optimal 🟢40°F/4°CPrevents bacterial growth and spoilage.
Too Warm 🔥Above 40°F/4°CFood spoils easily.

Why Does My Refrigerator Temperature Keep Fluctuating?

A fluctuating fridge temperature is both annoying and risky. The constant rise and fall in temperature can result in bacterial growth and spoil your food quickly.

Frequent Door Opening 🚪Affects steady temperatureOpen only when necessary
Altered Thermostat Setting 🌡️Changes in coolingCheck and reset the thermostat
Faulty Cooling System 🛠️Fridge temperature can reach 50°F overnightCall a technician
Electrical Issues ⚡Voltage spikes affect temperatureCheck electrical setup
Blocked Thermostat Sensors 🍲Makes the fridge too cold or too warmDon’t place food near the thermostat
Blocked Vents 🌬️Warm air builds up, heating the fridgeEnsure proper ventilation
Dirty Compressor Coils 🌀Causes wild temperature fluctuationsClean the coils

You Keep Opening the Fridge Door🚪

If the fridge door is opened and closed repeatedly or is kept open for a long time, the fridge will be unable to maintain a steady and constant temperature.

The Thermostat Setting was Altered🌡️

Check the thermostat if your refrigerator has a bad temperature sensor, you may need to contact the manufacturer for a replacement.

The Problem with a Refrigerator Temperature at 50 Degrees

Why Does My Fridge Temperature Keep Changing? (And How You Can Fix This) 1
50 degrees Fahrenheit

Keeping your refrigerator at the right temperature is crucial for food safety. When your fridge is consistently at 50 degrees, you put yourself at risk of foodborne illness.

  • 50 degrees is not a safe temperature for food storage. At this temperature, bacteria can grow quickly, leading to foodborne illness.
  • To fix the issue, first check the thermostat setting. If the temperature is correct, but the fridge is still at 50 degrees, you might need to call a technician.

Importance of the Temperature Danger Zone

Normal Fridge Temperature
Normal Fridge Temperature

Why You Should Be Concerned Understanding the temperature danger zone is important for food safety. This range is usually between 40 and 140 degrees Fahrenheit. When food is in this zone, it is more susceptible to potentially harmful bacteria growth.

How to Avoid Risks

  • Store foods below or above the temperature danger zone to minimize the risk of bacterial growth.
  • Use a calibrated food thermometer to ensure your fridge and freezer are set at the correct temperatures.
  • Always keep hot and cold foods cold, and don’t leave food at room temperature for extended periods.

👩‍🍳 Read More: Refrigerator Maintenance Tips


Below, you’ll find answers to questions we get asked the most about why is my refrigerator temperature not constant.

01. What is the Best Refrigerator Temperature?

The optimum temperature for a fridge is between 0°C and 4°C or 40°F and 32°F.

02. How to Test a Refrigerator Thermostat?

Put a glass of water with a thermometer in it in the middle rack of the fridge. Wait 5-6 hours before measuring to see what temperature the thermostat is set to.

03. What Would Make a Refrigerator Stop Getting Cold?

Food blocking the thermostat sensor, a dirty compressor coil, or even opening and closing the fridge door too often.

04. How to Check Fridge Temperature without the Thermometer?

You can put a glass or bottle of water in the fridge to estimate the temperature. After 5-6 hours, take it out of the fridge and look at the water container. 
Keep an eye out for condensation; the faster it appears on the surface, the colder the temperature.

05. Why is My Fridge Not Cold?

Ensure no food is at the back of the fridge, blocking any sensors. Also, blocked vents and coils can cause fridges to heat up.

06. How Do I Find the GE Profile Refrigerator Troubleshooting Temperature?

If your fridge isn’t cooling properly, ensure the thermostat and sensors are working properly, and the temperature is set to the correct number. If this doesn’t work, contact customer service.

07. What Should the Internal Temperature of My Fridge Be?

The internal temperature of your fridge should ideally be between 0C and 4C or 40F and 32F. Anything outside this range could lead to food spoilage.

08. What Is the Hot Holding Temperature for Foods in My Fridge?

While your fridge is not designed for hot holding, if you are storing cooked foods, the hot holding temperature should not exceed 140 degrees Fahrenheit to minimize bacterial growth.

09. Why Does My Fridge Temperature Exceed 140 Degrees Fahrenheit?

If your fridge temperature ever exceeds 140 degrees Fahrenheit, it is a sign of a serious malfunction and you should seek immediate professional help. This temperature is unsafe for food storage and could lead to foodborne illnesses.

In All

The next time your cold brew is too warm for your liking, you won’t have to ask yourself: why does my fridge keep changing temperature? You’ll know just what to do.

Relevant Reads

Table of Contents