The Best Indoor Thermometers of 2022

An indoor thermometer lets you keep close tabs on the humidity and temperature in your home, greenhouse, wine cellar, or humidor.

By Tony Carrick | Updated Jun 16, 2022 4:00 AM

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The Best Indoor Thermometer

Photo: amazon.com

Between trying to maintain the proper humidity in your wine cellar or humidor, monitoring the temperature in your greenhouse, or just tracking the conditions in your home, an indoor thermometer is a valuable tool. Modern indoor thermometers feature digital displays, can track and store data, and/or can be used as “smart” devices that send you alerts when air quality moves outside preset parameters.

To help you find the best indoor thermometer for your home, refer to the shopping considerations below and take a look at some high quality, reliable models available today.

  1. BEST OVERALL: AcuRite Digital Hygrometer with Indoor Thermometer
  2. BEST BANG FOR THE BUCK: ThermoPro TP49 Digital Indoor Hygrometer Thermometer
  3. UPGRADE PICK: Govee Bluetooth Thermometer Hygrometer
  4. BEST FOR GREENHOUSES: ThermoPro TP55 Digital Thermometer Humidity
  5. BEST FOR WINE CELLARS: SensorPush Wireless Thermometer/Hygrometer
  6. BEST FOR HUMIDORS: Govee WiFi Temperature Humidity Monitor, Wireless
  7. BEST FOR PET ENCLOSURES: Govee Wi-Fi Digital Thermometer Hygrometer 3 Pack
  8. ALSO CONSIDER: VIVOSUN Digital Indoor Thermometer Hygrometer
The Best Indoor Thermometer

Photo: amazon.com

What to Consider When Choosing the Best Indoor Thermometer

While accuracy is crucial when it comes to an indoor thermometer, there are other features that are also important to consider, including size and connectivity. Ahead, learn more about these and other attributes of indoor thermometers.

Temperature Range and Accuracy

Most indoor thermometers can read a broad temperature range, making them suitable for monitoring temperature in more extreme indoor environments, such as a refrigerator or freezer. Some indoor thermometers are capable of reading temperatures ranging from as low as -50 degrees to as high as 145 degrees.

These thermometers are also capable of taking accurate readings. While most thermometers have a margin of error of a degree or two, the most accurate are to within half a degree.

Many indoor thermometers also function as hygrometers that can measure the percentage of moisture in the air between humidity ranges of 0 percent and 99 percent within a margin of error of +/- 2 percentage points.

Battery Life

Indoor thermometers are powered by either a CR 2032 coin battery or one or two AAA batteries. A 2032 battery has a capacity of 235 mAh, while a AAA battery has a 1,000 mAh battery capacity. While this means one can generally expect to get a longer battery life out of an indoor thermometer powered by one or two AAA batteries, battery life is also dependent upon how big the display is and whether it uses a backlight or not. A small indoor thermometer with no backlight powered by a coin battery may have a similar battery life as a larger model with a backlight that takes a AAA battery.

Size

Indoor thermometers vary in size from small sensors with no display screen that measure just a couple of inches wide by a couple of inches tall to larger units with screen sizes that vary from 2 inches up to 4 inches. While it may be easier to read a larger indoor thermometer’s display, they also take up more space, making them unsuitable for some applications.

Some indoor thermometers consist of a small sensor with no display that sends data to a compatible app on a smartphone. These compact indoor thermometers are ideal for monitoring the humidity or temperature in compact spaces, such as a small humidor or a pet enclosure.

Connectivity

Some indoor thermometers are capable of connecting to a smartphone via Bluetooth, allowing the user to monitor environmental conditions remotely. These thermometers are also capable of storing months and even years worth of data via a cloud storage service, which is useful for those who need to monitor the environmental conditions in a greenhouse, wine cellar, or humidor. Since these thermometers use Bluetooth, they typically have a range of a few hundred feet. Some can even be paired with a compatible smart home hub, allowing them to send alerts and data to a smart device in virtually any location.

Additional Features

In addition to providing temperature data, most indoor thermometers also act as a humidity monitor. Some indoor thermometers can record high and low temperature and humidity readings over an extended period.

Most indoor thermometers come with multiple mounting options, including a stand that allows them to sit on a flat service, a hole for hanging on a wall, and a magnet that allows them to stick to a metal surface, such as a basement pipe or kitchen appliance.

Our Top Picks

The thermometers below provide accurate readings for indoor temperature and humidity and feature large, easy-to-read displays. Some are equipped with Bluetooth, allowing them to send alerts to smartphones to report humidity and temperature changes.

Best Overall

The Best Indoor Thermometer Option: AcuRite Monitor for Greenhouse, Home, or Office
Photo: amazon.com

With its accurate humidity and temperature readings, this thermometer from AcuRite is worthy of your kitchen or living room. Accuracy is critical when it comes to an indoor thermometer, and this unit has a narrow 0.5-degree range of error, with data updated every 10 seconds.

This model also provides a humidity percentage and a gauge that lets you know if the air comfort is Low, OK, or High. This model has large numbers that make it easy to read, even from across the room. This thermometer can stand upright on a shelf or table or be mounted to a refrigerator or other metal surface using the powerful magnetic backing.

Product Specs

  • Temperature Accuracy: +/- 0.5 degree
  • Temperature Range: -4 to 158 degrees Fahrenheit
  • Humidity Accuracy: +/- 2 percent relative humidity
  • Power: 2 AAA batteries (not included)

Pros

  • Large display screen
  • High degree of temperature accuracy
  • Records and displays highs and lows

Cons

  • Batteries not included

Get the AcuRite Digital Hygrometer on Amazon.

Best Bang For The Buck

The Best Indoor Thermometer Option: ThermoPro TP49 Digital Indoor Hygrometer Thermometer
Photo: amazon.com

The ThermoPro provides all the information one needs to monitor indoor temperature and humidity at an affordable price. A 2-inch screen shows temperature to the nearest tenth as well as humidity in large enough letters to read from across the room, though it lacks a backlight for night time visibility.

In addition to providing the humidity, it also displays a smiley face to register dry, wet, or optimal humidity levels. A fold out stand allows it to sit on a flat surface. It also comes equipped with a magnet for mounting to a metal surface and a hole for hanging on a wall. The ThermoPro is also capable of taking readings within a degree and refreshes every 10 seconds. Unlike other indoor thermometers that use a button style battery, the TP49 uses a AAA battery that lasts three times as long.

Product Specs

  • Accuracy: +/- 1 degree
  • Temperature Range: -58 degrees to 158 degrees Fahrenheit
  • Humidity Accuracy: +/- 2 to 3 percent relative humidity
  • Power: 1AAA battery (included)

Pros

  • Large numbers make are easily visible
  • Three mounting options
  • Budget priced

Cons

  • No backlight for night time visibility

Get the ThermoPro TP49 on Amazon or at The Home Depot.

Upgrade Pick

The Best Indoor Thermometer Option: Govee Temperature Humidity Monitor
Photo: amazon.com

With accurate sensors, multiple displays, and smartphone alerts, Govee’s temperature and humidity monitor is one of the most feature-rich models available. It has Bluetooth connectivity, allowing it to send you alerts whenever there’s an unusual change in temperature or humidity.

The thermometer is accurate to within half a degree while the humidity is accurate to 3 percentage points. An LCD screen displays current temperature and humidity, or you can use the Govee app. This unit can record up to 2 years of historical data, which is exportable to a spreadsheet.

Product Specs

  • Accuracy: +/- 0.54 degrees
  • Temperature Range: -4 degrees to 140 degrees Fahrenheit
  • Humidity Accuracy: +/- 3 percent relative humidity
  • Power: 3AAA battery (included)

Pros

  • Delivers push alerts to a smartphone via Bluetooth or WiFi
  • Very accurate temperature readings
  • Can access readings remotely with a smartphone
  • Records temperature and humidity data

Cons

  • No backlight for display

Get the Govee Temperature Humidity Monitor on Amazon.

Best For Greenhouses

The Best Indoor Thermometer Option: ThermoPro Digital Hydrometer Indoor Thermometer
Photo: amazon.com

In situations where changes in air temperature can affect indoor plants, wine, or even cigars, you need to know right away if there is a critical change in air temperature or humidity. This thermometer and humidity gauge from Govee uses Bluetooth or WiFi connectivity to send an alert to the Govee app on your smartphone.

This device will also store data when using the app, which you can view for up to 20 days. An integrated stand allows this thermometer to stand upright on a flat surface. You can also use the mounting bracket on the back to hang it on the wall. With a temperature range of -4 degrees to 140 degrees, it’s an excellent option for sheds, greenhouses, and other indoor places that aren’t climate controlled.

Product Specs

  • Accuracy: +/- 1 degrees
  • Temperature Range: -58 degrees to 158 degrees Fahrenheit
  • Humidity Accuracy: +/- 2 to 3 percent relative humidity
  • Power: 2 AAA batteries (included)

Pros

  • Sends temperature change push alerts
  • Stores data for up to 20 days
  • Large 4-inch display

Cons

  • Not as accurate as other thermometers

Get the ThermoPro TP55 Digital Hygrometer on Amazon.

Best For Wine Cellars

The Best Indoor Thermometer Option: SensorPush Wireless Thermometer Hygrometer
Photo: amazon.com

Plants are sensitive to changes in temperature and humidity. If you own a greenhouse, both must stay at optimal levels to promote growth while staving off extreme temperatures that can quickly kill plants. This ThermoPro device’s broad temperature range and ability to track highs and lows are incredibly useful for greenhouse and gardening sheds.

With its large 4-inch display and a backlit screen, this model is easy to read even in dimly-lit conditions. It supports a broad temperature range of -58 degrees to 158 degrees and a humidity range from 10 percent to 99 percent, suitable for indoor spaces that aren’t climate controlled.

This ThermoPro unit not only allows you to see the current temperature and humidity levels, but also where they’ve been. It displays highs and lows for both temperature and humidity for the past 24 hours or all-time, letting you know how the air is changing when you’re not there to monitor.

Product Specs

  • Accuracy: +/- 0.5 degrees
  • Temperature Range: -40 degrees to 140 degrees Fahrenheit
  • Humidity Accuracy: +/- 3 percent relative humidity
  • Power: CR2 battery (included)

Pros

  • Compact size fits in a variety of locations.
  • Sends temperature and humidity data to a smartphone.
  • High degree of accuracy

Cons

  • Limited to Bluetooth range.
  • No display on unit

Get the SensorPush Wireless Thermometer on Amazon.

Best For Humidors

The Best Indoor Thermometer Option: Govee WiFi Temperature Humidity Monitor, Wireless
Photo: amazon.com

This wireless thermometer hygrometer keeps you in the know about the conditions your precious wine is facing by collecting indoor temperature and humidity data once per minute, then sending the data to your smartphone via the SensorPush App.

This app provides detailed graphs showing you temperature changes over hours, days, months, and even years. You can program the device to send you alerts when there are changes in temperature or humidity. It connects to your smart device via Bluetooth. When paired with a SensorPush gateway, it sends you alerts via WiFi.

Product Specs

  • Accuracy: +/- 0.5 degrees
  • Temperature Range: -4 to 140 degrees Fahrenheit
  • Humidity Accuracy: +/- 3 percent relative humidity
  • Power: Lithium metal battery (included)

Pros

  • Provides detailed graphs of temperature and humidity data
  • Connects to smartphone
  • Sends push alerts

Cons

  • Limited Bluetooth range

Get the Govee Hygrometer Thermometer on Amazon.

Best for Pet Enclosures

The Best Indoor Thermometer Option: Govee Wi-Fi Digital Thermometer Hygrometer 3 Pack
Photo: amazon.com

Those that house a gecko, iguana, snake, or other reptile or amphibian in their home must keep their pet’s enclosures at the right humidity levels to ensure they stay happy and healthy. While a larger indoor thermometer hygrometer isn’t suitable for this purpose, this compact sensor, which measures just 2.5 inches by 2.5 inches and 1 inch thick, is compact enough to fit into a small glass enclosure.

Plus, it pairs with a smartphone via Bluetooth and sends push alerts if the temperature or humidity gets too high or too low. It will also store up to two years of temperature and humidity readings in the cloud for free. The Govee system is expandable, allowing you to connect up to ten sensors, making it ideal for monitoring temperatures and humidity in multiple locations. The Govee is also one of the more accurate indoor thermometers on the market with a margin or error of just +/- 0.54 degrees.

Product Specs

  • Accuracy: +/- 0.54 degrees
  • Temperature Range: -4 to 140 degrees Fahrenheit
  • Humidity Accuracy: +/- 3 percent relative humidity
  • Power: 100-240V for hub and one AAA battery per sensor

Pros

  • Compact size ideal for animal enclosures
  • Sends push alerts for changes in temperature and humidity
  • Stores up to two years of data in the cloud for free

Cons

  • Limited range

Get the Govee Mini Hygrometer Thermometer on Amazon.

Also Consider

The Best Indoor Thermometer Option: VIVOSUN Digital Indoor Thermometer Hygrometer
Photo: amazon.com

Some indoor thermometers have small screens that make them difficult to read and limit the amount of data they can display. Not so with this thermometer. With its large 4-inch screen, the Vivosun is able to pack in more data than smaller indoor thermometers. In addition to current temperature and humidity, it also displays highs and lows for both readings as well as a comfort meter showing if the humidity is too high, too low, or just right.

The touch screen also allows the user to turn the backlight on and off or toggle between Celsius and Fahrenheit. There’s also a battery indicator that lets the user know when it’s time to replace the battery. The Vivosun comes with a table stand, a hole for hanging, and a magnet that allows it to be stuck to a metal surface.

Product Specs

  • Accuracy: +/- 1.5 degrees
  • Temperature Range: -32 to 158 degrees Fahrenheit
  • Humidity Accuracy: +/- 5 percent relative humidity
  • Power: 2 AAA batteries (included)

Pros

  • Large display is easy to read
  • Display includes broad range of data
  • Backlight

Cons

  • Not as accurate as other indoor thermometers

Get the Vivsun Indoor Digital Thermometer on Amazon.

Our Verdict

A good indoor thermometer should be accurate, easy to read, and affordable. With its 2.75-inch display and narrow margin of error the AcuRite Monitor for Greenhouse, Home, or Office is a great choice. Those looking for an indoor thermometer that will allow them to monitor humidity and temperature remotely should consider the Govee Temperature Humidity Monitor, which connects to a smart phone via Bluetooth technology.

How We Chose the Best Indoor Thermometers

We considered several criteria when making our selections of the best indoor thermometers. Location is crucial when choosing an indoor thermometer hygrometer, so we included models with displays for use in a home’s living areas. Our list also includes indoor thermometers that connect to a smartphone for remote monitoring, making them ideal for greenhouses, wine cellars, humidors, and animal enclosures.

Accuracy is crucial when selecting an indoor thermometer, so we limited our choices to those with a margin of error of 1.5 degrees or less while favoring those with the smallest margin of error. In addition to these factors, we also leaned toward indoor thermometers that offer useful additional features, such as the ability to record and display highs and lows as well as those capable of storing data for extended periods of months or even years.

FAQs

If you’re wondering how accurate an indoor thermometer and humidity gauge is or and whether you can place your indoor thermometer outdoors, then read on for answers to these and other questions about these devices.

Q: What’s the difference between indoor thermometers and outdoor thermometers?

Most indoor and outdoor thermometers function similarly when measuring indoor and outdoor temperature. The biggest difference between the two is the ability to endure weather conditions. While indoor thermometers are not designed to withstand rain, snow, and UV rays, an outdoor thermometer is waterproof and ruggedly constructed to endure the elements.

Q: Are digital indoor thermometers accurate?

Most digital indoor thermometers are very accurate within a margin of errors that are within a degree. The most accurate models have a margin of error of just plus or minus 0.5 degrees.

Q: Which indoor thermometers work with Amazon’s Alexa, Google, and other digital assistants?

Indoor thermometers are not compatible with Amazon Alexa, Google or other digital assistants out of the box because they connect using Bluetooth. However, some indoor thermometers can connect to a compatible hub that will allow them to work with a digital assistant.

Q: Where should you put an indoor thermometer?

To get the best readings, you should put an indoor thermometer about five to six feet above the ground in a location that’s away from direct sunlight, a stove, heater, or heating vent.