10 bestCompost Thermometersof June 2025
112M consumers helped this year.
1
SQUEEZE master Large Compost Tumbler Bin - Outdoor Garden Rotating with Thermometer - Better Air Circulation Efficient Compost- BPA Free-Sturdy Steel Frame - 43Gallon (2-21.5Gal)- Green Door
SQUEEZE master
9.8
2
General Tools & Instruments T300-36 36 X 3 Inch Dial Soil Thermometer 0 to 220 Degrees Fahrenheit with 1/2 Inch NPT Fitting
General Tools
9.6
3
Luster Leaf Soil Thermometer Silver Stainless Steel
9.3
4
REOTEMP Super Duty Compost Thermometer with Fast Response - Fahrenheit and Celsius (36 Inch Stem), Made in The USA
REOTEMP
9.0
5
Heavy Duty Compost Thermometer - A36PF
REOTEMP
8.7
OtherUp to 16% off
Compost Soil Worm Thermometer - Backyard Compost Thermometer,Soil Thermometer,Plant Thermometer Outdoor Garden with Waterproof Dial,20”Probe for composting bin,in/Outdoor Planting
REOTEMP FG16P Backyard Compost Thermometer - with PDF Composting Guide (16" Stem)
Compost Thermometer Stainless Steel Dial - Ideal Composting Soil Thermometer with 50MM Diameter C and F Dial and 295MM Compost Temperature Gauge Probe
Luster Leaf 1630 Rapitest Dial Soil Thermometer, Stainless Steel, Pack of 1
6
REOTEMP Heavy Duty Compost Thermometer - Fahrenheit (36 Inch Stem), Made in The USA
REOTEMP
8.4
5% off
7
Garden Weasel Analog Soil & Composting Dial Thermometer - 36-Inch Probe | Measures 0 to 220 Degrees Fahrenheit | Soil Temperature, Worm Compost | 98001-A
Garden Weasel
8.1
8
Compost Thermometer - Cate's Garden Premium Stainless Steel Bimetal Thermometer for Backyard Composting - 2 Inch Diameter Fahrenheit Dial, 20 Inch Temperature Probe
Cate's Garden
7.8
9
Greenco Gardening Compost Soil Thermometer by Greenco Stainless Steel Celsius and Fahrenheit Temperature Dial 20 inch Stem
Greenco
7.5
10
REOTEMP Backyard Compost Thermometer - with PDF Composting Guide (Fahrenheit) 20 Inch Stem
REOTEMP
7.2
A Guide to Selecting the Best Compost Thermometers
Choosing the right compost thermometer can make a big difference in how effectively you manage your compost pile. A compost thermometer helps you monitor the internal temperature of your compost, which is crucial for ensuring that the decomposition process is happening efficiently and safely. By understanding the key features and specifications, you can select a thermometer that matches your composting style and needs, making the process easier and more successful.
Probe Length
Probe length refers to how long the metal rod is that you insert into your compost pile. This is important because it determines how deep you can measure the temperature inside the pile. Shorter probes, around 12 inches, are suitable for small compost bins or piles, while longer probes, up to 24 or 36 inches, are better for larger or deeper piles. If you have a small backyard bin, a shorter probe will be easier to handle and sufficient for your needs. For larger or multi-layered piles, a longer probe ensures you can reach the center, where the most accurate temperature readings are found.
Temperature Range
The temperature range tells you the lowest and highest temperatures the thermometer can measure. This is important because composting works best within certain temperature zones. Most compost thermometers cover a range from about 0°F to 200°F (or -20°C to 100°C). If you want to monitor both the early, cooler stages and the hot, active composting phase, make sure the thermometer covers this full range. For most home composters, a standard range is sufficient, but if you live in a very cold or hot climate, check that the thermometer can handle those extremes.
Dial Size and Readability
Dial size refers to how big the display is where you read the temperature. A larger dial is easier to read, especially from a distance or in bright sunlight. Some dials also have color-coded zones to help you quickly see if your compost is in the ideal temperature range. If you have trouble reading small print or want to check the temperature without getting too close, choose a thermometer with a larger, clear dial. If you prefer a more compact tool, a smaller dial may be fine, but make sure the numbers are still easy to see.
Build Quality and Material
Build quality and material refer to how sturdy and weather-resistant the thermometer is. Compost piles can be moist and acidic, so a thermometer made from stainless steel or other rust-resistant materials will last longer and give more reliable readings. If you plan to leave the thermometer in the pile for long periods, durability is especially important. For occasional use, a basic model may be enough, but for frequent monitoring or harsh outdoor conditions, look for a well-built, weatherproof thermometer.
Calibration and Accuracy
Calibration and accuracy describe how closely the thermometer measures the true temperature. Some thermometers can be recalibrated if they start to give inaccurate readings, while others are fixed. Accurate readings are important for knowing when to turn your pile or add materials. If you are serious about composting and want to optimize the process, choose a thermometer known for accuracy and, if possible, one that can be recalibrated. For casual composters, a standard, non-adjustable thermometer may be sufficient.
Best Reviews Guide Newsletter
Get exclusive articles, recommendations, shopping tips, and sales alerts
Sign up for our newsletter to receive weekly recommendations about seasonal and trendy products
Thank you for subscribing!
By submitting your email address you agree to our Terms and Conditions and Privacy Policy