Chicken Incubator Guide: Best Temps for Hatching Success

By Amanda Gan
Last updated May 29, 2025
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Hatching chicken eggs is an exciting and rewarding process, whether you're a backyard poultry keeper or a small homesteader. But if you want healthy, fluffy chicks at the end of your 21-day journey, you need to get one thing right: the chicken incubation temperature. This article will walk you through the science of incubation, the ideal temperature and humidity levels, and how to monitor them with precision using the ThermoPro TP357 Digital Hygrometer Thermometer.

Why Temperature Matters When Hatching Chicken Eggs

When you’re using a chicken incubator, you’re essentially replacing the role of a broody hen. Fertilised chicken eggs need a very specific environment to develop properly. Even small fluctuations in temperature can result in delayed hatches, deformities, or even embryo death.

The best temperature for hatching chicken eggs is typically around 99.5°F (37.5°C) in a forced-air chicken egg incubator. For still-air incubators, a slightly higher temperature of 101–102°F (38.3–38.8°C) is recommended to compensate for the lack of circulation.

The chicken egg hatch temperature must stay consistent throughout the 21-day incubation period. Fluctuations of more than 1°F can seriously impact your hatch rate. For beginners especially, a reliable thermometer is essential.

Understanding Chicken Incubation Temp and Humidity

In addition to temperature, humidity plays a key role in successful hatching. During incubation, eggs lose moisture at a steady rate. This water loss helps the air cell inside the egg grow, preparing the chick for hatching.

Here’s the breakdown:

  1. Days 1–18: Maintain humidity at 45–55%.
  2. Days 19–21 (lockdown period): Increase humidity to 65–70%.

This balance ensures that your fertilised chicken eggs don’t dry out or become too moist. The right chicken incubator temperature combined with controlled humidity gives your chicks the best start in life.

Common Mistakes When Using a Chicken Egg Incubator

New chicken keepers often face setbacks due to poor temperature management. Here are a few common issues:

  1. Not calibrating the thermometer in the chicken incubator
  2. Relying solely on the built-in incubator reading
  3. Placing the thermometer too close to the heating element
  4. Not adjusting humidity based on ambient conditions

Monitoring chicken incubation temp requires a reliable, accurate tool—and that’s where the ThermoPro TP357 comes in.

Why Use the ThermoPro TP357 Digital Hygrometer Thermometer?

The ThermoPro TP357 Digital Hygrometer Thermometer is more than just a thermometer. It’s a powerful monitoring device that helps you keep track of both temperature and humidity in real time. Its features make it perfect for managing a chicken egg incubator:

  1. 260FT remote Bluetooth range;
  2. Real-time app monitoring with alerts;
  3. Accurate sensors for both temp and humidity;
  4. Max/min records to track environmental changes

ThermoPro TP357 Digital Hygrometer Thermometer of 260FT Range

Whether you have a DIY incubator or a commercial unit, the TP357 lets you confidently manage the best temp for incubating chicken eggs, even from another room.

Setting Up Your Incubator for Optimal Conditions

Follow these steps for best results:

  1. Place your incubator in a draft-free room away from direct sunlight.
  2. Pre-warm your incubator 24 hours before adding eggs.
  3. Use two hygrometer thermometers to verify accuracy.
  4. Place sensors at egg level inside the incubator.
  5. Adjust water trays or sponges to control humidity.

Avoid opening the lid too often, especially during lockdown (days 19–21). Too much fluctuation in the chicken egg incubation temperature at this stage can prevent hatching.

What to Do if Temperatures Fluctuate

If the power goes out or your incubator malfunctions, don’t panic. Here are a few emergency tips:

  1. Insulate the incubator with blankets
  2. Use warm rice socks or hot water bottles as a temporary heat source
  3. Keep monitoring using the ThermoPro TP357 to avoid overheating

Brief drops of 1–2°F for under an hour are usually survivable, but anything more could affect your hatch rate. Quick intervention is key.

Troubleshooting: If Your Eggs Don’t Hatch

Even experienced hatchers lose some embryos. Here are possible causes:

  1. Too low or too high chicken incubator temperature
  2. Incorrect humidity levels
  3. Fertility issues with the eggs
  4. Turning eggs too infrequently

If you have multiple chickens in incubator but only a few hatch, candle the eggs after day 7 to check development. After day 21, open unhatched eggs to examine embryo development. Keep notes to improve for the next hatch.

After Hatching: Maintaining Brooder Temperature

Your job doesn’t stop once the chicks hatch. For the first week, keep the brooder temperature around 95°F, reducing it by 5°F each week. Again, your TP357 will come in handy to avoid overheating or chilling.

Happy chicks = healthy flock.

Conclusion: Master the Art of Incubation

Getting the best temp to hatch chicken eggs is not about guesswork—it’s science. With the right knowledge, tools, and a reliable digital monitor like the ThermoPro TP357, you can turn fertilised eggs into healthy chicks with confidence.

So if you’re planning your next hatch, invest in precision. Because when it comes to chicken incubation temp, every degree matters.

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