Best Compost Thermometer: Our Top 5 Picks

Ed Wike
Written by
Last update:

There are tons of trusty thermometers for the garden, but which one is perfect to measure the temperatures of your compost?

Finding a compost thermometer breaks down to a few factors, starting with what kind of thermometer do you really need? Are you looking for something for the kitchen that allows you to keep your compost in your backyard? Do you need to keep a thermometer in your compost pile at all times?

We’ll take a closer look and offer a few options to consider.

NameCategoryProduct
REOTEMP Backyard Compost ThermometerBest OverallREOTEMP Backyard Compost Thermometer
Cate's Garden Compost Thermometer Premium Stainless Steel Bimetal ThermometerBudget PickCate's Garden Compost Thermometer Premium Stainless Steel Bimetal Thermometer
REOTEMP Heavy Duty Digital Compost ThermometerUpgrade PickREOTEMP Heavy Duty Digital Compost Thermometer

1. REOTEMP Backyard Compost Thermometer

Our rating: 9 / 10

REOTEMP Backyard Compost Thermometer

Check Price on Amazon

Pros:

  • A compact thermometer that fits easily in a pocket
  • Easy to install
  • Expert instructions included on how to get started composting and managing your compost pile for the most efficient compost production
  • Accurate and durable thermometers
  • 20-inch length, 1/4" diameter stem
  • Durable stainless steel construction
  • Hermetically sealed to prevent fogging
  • 3 temperature zones that indicate compost activity
  • 100% Compostable packaging
  • Printed with soy-based ink
  • Zero-waste, no plastic, no Styrofoam, shred the box to use in your compost pile as a brown
  • Range: 0-199.9°F

Cons:

  • Not very accurate
  • Can be temperamental. Doesn't work on its own.

The REOTEMP compost thermometer is considered one of the best compost thermometers on the market and has some excellent features that make it worth considering. It produced an accurate reading and was easy to install.

The small size also makes it perfect for a compost thermometer. This thermometer is designed to be attached to the handle of a compost tumbler, or you can use it for measuring the temperature of a compost pile. It's also great for monitoring compost in your garden.

The compost thermometer will read the inside temperature of the compost. It will also provide a useful guide to knowing when you have enough temperature within the pile to get it ready for use.

2. REOTEMP Heavy Duty Compost Thermometer

Our rating: 9 / 10

REOTEMP Heavy Duty Compost Thermometer

Check Price on Amazon

Pros:

  • Rugged stainless steel construction
  • 5/16" Diameter heavy duty stem
  • Hermetically sealed dial
  • Large 3" dual Sscale dial, measures 0 to 200°F & -10 to 90°C
  • 1 Year limited warranty
  • Features an easy to read and clear display
  • Available in 4 stem sizes

Cons:

  • The thermometer is a bit pricey.
  • The thermometer is bulky and needs a regular-sized hole in the compost mound for burying.

When you're composting, the temperature is a vital tool for monitoring the state of the bin and knowing when to turn or mix the pile. Ideally, your pile should be between 140 and 160 degrees Fahrenheit when properly composting.

The REOTEMP Heavy Duty Compost Thermometer is a great instrument to use when monitoring the internal temperature of the compost pile.

3. Compost Soil Thermometer by Greenco

Our rating: 9 / 10

Compost Soil Thermometer by Greenco

Check Price on Amazon

Pros:

  • Reinforced welded bolt between dial and stem for long-lasting operation
  • High quality 304 stainless steel
  • Easy to read 2-inch wide dial with color-coded temperature ranges
  • 40 – 180 Fahrenheit range and -17.77 – 82.22 Celsius in 2-degree increments
  • High-quality and lightweight PC coated lens
  • Hermetically sealed to avoid fogging and moisture
  • IP55 water-resistant rating
  • Composting instructions included to get you started
  • Lifetime warranty

Cons:

  • Too flimsy
  • Users complain of fogging up

The compost thermometer by Greenco offers a great way to keep track of the temperature in your compost bin when you’re starting a compost heap. The compost thermometer has a large temperature gauge, so you can easily read what the temperature is.

The metal stem is made from stainless steel, and the base is made from plastic. The gauge has a dial that turns well, and it has painted edges for protection. Use it to keep track of your compost’s temperature.

4. Cate's Garden Compost Thermometer Premium Stainless Steel Bimetal Thermometer

Our rating: 8 / 10

Cate's Garden Compost Thermometer Premium Stainless Steel Bimetal Thermometer

Check Price on Amazon

Pros:

  • Clear, accurate, easy to read 2-inch wide dial with color-coded temperature ranges
  • 40 to 180 Fahrenheit range, (4 to 82 Celsius) in 2 °F increments
  • High-quality and lightweight PC-coated lens
  • Hermetically sealed to avoid fogging and moisture
  • IP55 water-resistant rating.
  • Rugged construction
  • High quality 304-grade rust-resistant stainless steel
  • Long 20 inch, 3/16 inch diameter durable stem for accurate readings
  • 100% money-back guarantee

Cons:

  • Flimsy weak metal shaft
  • Not waterproof practically

Cate's Garden Premium Stainless Steel Bimetal Thermometer is not just visually pleasing. Still, it is also calibrated to help you measure the temperature of your compost during the right stages of decomposition. It is made of stainless steel and can easily be wiped clean for continuous use.

5. REOTEMP Heavy Duty Digital Compost Thermometer

Our rating: 6 / 10

REOTEMP Heavy Duty Digital Compost Thermometer

Check Price on Amazon

Pros:

  • Water resistant, IP67
  • High accuracy RTD, ±0.95°F at 131°F
  • 5 Year battery life
  • 5/16” Diameter heavy duty stem
  • High quality

Cons:

  • Expensive
  • The digital display may not be readable in direct sunlight

The REOTEMP Heavy Duty Digital Compost Thermometer can measure temperatures up to 160-degrees Fahrenheit, which is more than enough for most composting needs. The large display is easy to read and includes a backlight.

Frequently Asked Questions (FAQs)

Which composting method is the best?

There are two common composting methods: the cold and the hot pile. The cold method is most suitable for winter months and uses a slow, passive composting process largely influenced by time. This method relies on the oxygen present in the system to help break down the organic matter. On the other hand, the hot method is based on the cyclical activity of microbes in the compost pile and uses added heat to hasten the composting process.

The key difference between the two methods is that the cold method relies on the natural bacterial activity in the soil, which means you can’t add organic matter to it more than once a week.

What is the best location for a compost bin?

Good composting bins are always black, made of plastic, and have a built-in locking lid to keep smells out of the air. They should also be located close to a water source so that you can easily spray them down with water in between composting sessions. This is to keep the compost pile from drying out and to maintain the right oxygen-to-nitrogen ratio for the decomposition process.

When choosing where to place your compost heap, some factors to consider are the amount of rainfall, bugs, rodents, and other pests that might make a mess of your compost. Ideally, your composting bin should be close to your collection bins so that transporting them is easy. A perfect place might be under a tree or a porch where it can get moderate shade and be sheltered from the rain.

Experts in composting recommend that the temperature of your compost heap should never fall below 120 degrees F. Further, the higher it is, the better. It suppresses the growth of harmful bacteria present and releases nutrients faster. Generally, your compost should reach a temperature of 135 degrees F or more to degrade your trash into fertile compost.

What is the quickest compost?

One can make compost from dead leaves, hedge trimmings, and even animal waste. It’s a mixture of decaying organic material, which is then broken down by microorganisms. The process of decomposition is what we call compost.

Conclusion

We have scoured the market to find you the best compost thermometer. We have read countless reviews, talked to experts, and did hands-on research. We read hundreds of reviews to find out which compost thermometer you should choose. True enough, there are some great compost thermometers on our list you can consider buying.

Our Recommendation

NameCategoryProduct
REOTEMP Backyard Compost ThermometerBest OverallREOTEMP Backyard Compost Thermometer
Cate's Garden Compost Thermometer Premium Stainless Steel Bimetal ThermometerBudget PickCate's Garden Compost Thermometer Premium Stainless Steel Bimetal Thermometer
REOTEMP Heavy Duty Digital Compost ThermometerUpgrade PickREOTEMP Heavy Duty Digital Compost Thermometer