Having to go outside to check the temperature can be a hassle.

Planning your day and your plans getting cancelled due to temperature changes can be an inconvenience.

These are some of the reasons you should own a thermometer that can measure both indoor and outdoor temperatures.

Even if you are not familiar with the lingo used in the industry, we will make it easier for you to decide which model to purchase through the buyer’s guide below.

Table of Contents

Our top indoor-outdoor thermometers picks

These are the top seven thermometer models that ticked most, if not all features and capabilities mentioned above.

Ambient weather WS-2902C osprey WiFi 10-in-1

Ambient Weather WS-2902C WiFi Smart Weather Station
  • Allows you to monitor your home and backyard weather conditions with brilliant, easy-to-read LCD color display
  • Wireless all-in-one integrated sensor array measures wind speed/direction, temperature, humidity, rainfall, UV and solar radiation.
  • Supports both imperial and metric units of measure with calibration available

This is the best overall thermometer in the market you can find because of its combined basic and advanced features and functions. It has the basic functionalities that you would expect from an indoor/outdoor temperature (forecast, high and low temperature and humidity, barometric pressure, and date and time.)

Aside from these basic functionalities it also offers high and low readings and alerts for all parameters and wind speed and direction reading. It can also monitor dew point, wind chill, heat index, rainfall, UV and solar direction.

Pros

  • Can be integrated with smart home software
  • Has IFTTT compatibility for external device control
  • With built-in Wi-Fi for ease of connection and access to data
  • With a Solar-powered sensor operated wirelessly and is also compatible with battery
  • With an LCD display which projects input from outdoor sensor even at 330ft distance
  • With radiation shielding which encourages natural airflow, providing accurate readings

Cons

  • Setting up can be challenging
  • More expensive that its counterparts

La crosse technology C85845

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La Crosse Technology C85845-INT Weather Station, Black
  • Dynamic forecast icons with tendency arrows
  • Temperature & humidity (hi/lo) customizable alerts
  • Comfort level color bar

This indoor-outdoor thermometer is the second on our list because it is reliable enough but not as feature-packed as the Ambient Weather model. It can show accurate temperature and humidity readings and allows alarm setting for monitoring. It also has forecast and date and time details. This La Crosse Technology thermometer is powered by AC, and its sensors are battery-operated.

Pros

  • Easy to set up
  • Accurate measurement and readings
  • Easy-to-read screen with adjustable brightness
  • Radiation shields available as optional purchase

Cons

  • Cannot measure rain or wind
  • Cannot be controlled remotely
  • Cannot be integrated with smart home devices
  • Barometric pressure not shown on the console

ThermoPro TP65A indoor/outdoor thermometer

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ThermoPro TP65 Indoor Outdoor Thermometer Digital Wireless Hygrometer Temperature Humidity Monitor...
  • Large backlit touchscreen: 4 inches large lcd display features a backlit touchscreen, making the indoor outdoor weather station easier to read in dim light conditions and superbly simple to use
  • Wireless temperature and humidity monitor: Measures indoor/outdoor temperatures and humidity percentages simultaneously; Capable of displaying the readings from up to 3 outdoor remote sensors to monitor 4 different locations at the same time if you buy 2 additional sensors
  • Max and min records: All time/24 hours max and min temperature and humidity percentages recorded and displayed on humidity gauge; Temperature/humidity trend arrows indicate whether it’s getting warmer or colder or more humid near the remote sensor

If you are looking for an affordable thermometer without compromising the reliability and accuracy, the ThermoPro TP65A is the best model for you. It offers ease of setting adjustment without having to unmount it. You won’t find it hard to check the humidity and temperature even at night because aside from its backlight function, it also has a 24-hour LCD screen. It also has icons which inform you of your home’s humidity.

Pros

  • Affordable
  • User-friendly
  • Reliable and accurate measurements
  • Large battery-powered 4” touchscreen LCD for ease of-reading
  • With a 200 ft. range outdoor sensor capable of syncing up to 3 devices
  • Comes with a standard one-year warranty and upgradable to 3 years if registered

Cons

  • Alert settings cannot be customized
  • Does not offer forecast, only humidity and temperature

Ambient weather WS-10

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Ambient Weather WS-10 Wireless Indoor/Outdoor 8-Channel Thermo-Hygrometer with Three Remote Sensors
  • Simple to read, simple to use, and affordable, the WS-10 includes an indoor thermo-hygrometer and three remote thermometer/hygrometer sensors (F007TH), which can be read at the same time.
  • The display console can remotely read and update up to eight remote thermo-hygrometer sensors at the same.
  • The console includes audible and visual alarms when temperature and humidity exceed your pre-set minimum and maximum alarm settings.

The Ambient Weather WS-10 is the best model for monitoring temperature and humidity in different locations. It is possible with its battery-powered eight sensors (three remote with capacity to add five more).  These eight sensors are integrated in a display console which shows audible and visual temperature and humidity updates.

Pros

  • Can support up to eight sensors
  • Optional temperature sensor for pool
  • With temperature change alert through adjustable alerts
  • Remote sensors capable of displaying humidity and temperature

Cons

  • Inconvenient battery replacement for each sensor
  • Does not show forecasts, only humidity and temperature
  • Does not support functions found in high-end counterparts
  • Needs scrolling down; can only display up to four sensors at a time

AcuRite 02027A1

AcuRite 02027A1 Color Weather Station with High Low Temperature and Humidity with Moon Phase, Dark...
  • Includes Color Weather Station Display, Temperature and Humidity Sensor, power adapter, and instruction manual
  • Barometer and moon phase depiction in info center
  • Wireless range for the sensor, up to 330 feet (100 meters)

For an affordable price, this AcuRite thermometer has a wide range of functions ranging from temperature and humidity indoor and outdoor readings to forecast. Aside from these features, the AcuRite also shows barometric pressure, moon phase, date and time and daily date and time readings.

Pros

  • Affordable price
  • Not difficult to set up
  • Forecast is self-calibrated and patented
  • Wall-mountable or upright standing console

Cons

  • No full range of sensors
  • No internet connectivity
  • Inability to customize alerts
  • Cannot measure wind and rainfall
  • Limited display viewing angles and may be hard to read when in direct sunlight

La crosse technology V10-TH

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La Crosse Technology V10-TH-INT V10-TH Wireless WiFi Weather Station
  • Outdoor Comfort Meter; Future Weather forecast with seasonal foliage tree icons
  • Daily and Hourly Forecasts of HI/LO temperatures; Temperatures and Humidity with trend arrows, customizable alerts and HI/LO records
  • Wi-Fi compatible - La Crosse View ready - Or, use as StandAlone station

Despite the La Crosse Technology’s limited functionality, its features are justifiable considering its price. It is capable of remote reporting, receiving alerts and push notifications through the use of the smartphone app, the La Crosse View. Although it cannot create a local forecast, it compensates by being able to access forecasts online from the National Weather Service (NWS).

Pros

  • Offers value for your money
  • Affordable and simple device
  • With a remote sensor range of 400 ft
  • Can access forecasts from NWS through Wi-Fi

Cons

  • Cannot take local forecasts
  • Can only measure humidity and temperature

AcuRite 02081M

AcuRite 02081M Weather Station with Jumbo Display and Atomic Clock
  • Optimal viewing angle is at or above eye-level Oversized color weather station with large digits.Unit is powered by an AC adapter with battery back up.
  • Atomic clock technology ensures split-second accuracy, and automatically updates for daylight saving time
  • 12 to 24-hour weather forecast displays 14 different icons to help you plan the day ahead

This thermometer is the winner in the area of visual appearance because of its compact, monochrome design. It can act as a thermometer and aesthetic calendar and clock. However, it lacks some of the necessary features for a thermometer such as barometric pressure and humidity. It can only measure time and date, forecast, and temperature.

Pros

  • Not expensive
  • Attractive display
  • 16-second range data updates
  • Wireless range of up to 330 ft.

Cons

  • Cannot read humidity
  • Does not display barometric pressure
  • LCD screen not convenient with sunlight glare due to poor viewing angles

What is an indoor-outdoor thermometer for?

From the name itself, an indoor and outdoor thermometer gives you temperature readings both inside and outside your house. This will give you an idea whether your room temperature is very high or low, or if it is normal.

It is essential to know the indoor temperature to know if you need to turn on or off your air conditioner and heater.

Knowing the outdoor temperature is also vital in order to plan your day and wear comfortable outfits appropriate for the temperature. Or if you are planning a BBQ party games and events or spend the night out watching the planets and galaxies with a telescope.

An indoor-outdoor temperature performs both functions so you no longer need to own two separate equipment.

Two types of thermometers for indoor and outdoor use

There is no need to buy separate thermometers for indoor and outdoor use. You can get the same results from just buying a thermometer capable of measuring indoor and outdoor temperature. This kind of device, also known as indoor-outdoor thermometer, comes in two types.

Fluid/glass thermometer

Fluid thermometer is also known as a glass thermometer. It is composed of a capillary attached to the thermometer’s bulb. The temperature reading can be found at the bulb’s end. However, it does not offer accuracy especially when the bulb and capillary are not aligned.

Hence, fluid/gas thermometers are best used only when low-maintenance cost is needed. Design needs to be tinkered with for better accuracy. It gives more accurate readings when the capillary and the bulb’s diameter is decreased and increased, respectively.

Electronic/digital thermometer

In terms of accuracy, electronic or digital thermometers offer more reliability that its glass counterparts. This is because of its various sensors that detect changes in temperature. Because the majority of these sensors are powered by battery, it can be conveniently placed anywhere or even mounted in a wall.  There is no need to install it. Another edge of digital thermometers is that they have a high refresh rate that is why it offers a more precise and accurate temperature readings than the fluid and gas counterparts.

Is an indoor-outdoor thermometer accurate?

A thermometer’s accuracy depends on two factors, its type and placement. In terms of its type, electronic or digital models are more accurate than their fluid or gas counterparts.

The location of your thermometer also plays a role. A +/- 2-degree range is given for a thermometer placed in the appropriate location. For projects and studies that require very accurate readings, it is best to use a well-calibrated thermometer.

How does an indoor-outdoor thermometer work?

The important component that makes the thermometer work is the mercury inside its bulb. This mercury rises and decreases, proportionate to the temperature. Hence, when the temperature is low, the mercury level also decreases; and when the temperature is high, the mercury level also increases.

What is barometric pressure?

The amount of air pressure, or the amount of pressure exerted by air molecules in the atmosphere is referred to as barometric pressure. Because the air molecules’ exerted effort changes, barometric also varies depending on the location it is measured.

How does barometric pressure affect temperature?

Barometric pressure which can be both characterized by low and high pressure areas can affect temperature.

Low pressure area

Low pressure area occurs when the atmospheric pressure is lower than its surroundings. In this case, warm air rises in the atmosphere. This is characterized by warm air and stronger winds. Other indicators are the appearance of clouds and turbulent weather conditions. Temperature in low pressure areas is moderate and won’t stay warm because it won’t get trapped by the clouds.

High pressure area

High pressure area occurs when the atmospheric pressure is higher than its surroundings. It means that the air temperature is lower. This is characterized by light winds, cloudless, blue skies and calm weather. A clear sky means that there are no clouds to trap the sun’s heat.

Wireless indoor-outdoor thermometer: a buyer’s guide

Here are some features and considerations to bear in mind when buying an indoor-outdoor thermometer to make sure that the model you get fits your needs and the location you’re in.

Minimum requirements

At the very least, your indoor-outdoor thermometer should be able to measure high and low temperatures for both indoor and outdoor. It should also be able to provide forecast, date and time, and barometric pressure. Having a thermometer capable of reading rainfall and wind speed and direction is a plus.

Atmospheric/ barometric pressure readings

If your place is prone to weather changes, it is best to grab an indoor-outdoor temperature capable of reading barometric pressure. In this way, you’ll be able to predict the weather conditions using the pressure in the atmosphere.

Power source (battery or AC adapter)

Choosing an AC adapter powered model is a cheaper and practical option than using a battery-powered one. Using batteries needs constant replacement especially for larger screen displays. You may also experience brightness dimming for battery-saving. Hence, the battery is only best used as a back-up power source. If you cannot choose which power source is best for you, you may choose a model that is compatible with both power sources.

Accuracy and reliability

An indoor-outdoor thermometer temperature accuracy range of +/-2 degree Fahrenheit is ideal. For humidity, it ranges in +/- 5 percent. It is best to refrain from buying thermometers that goes above and below these set limits.

Connectivity

Smart devices connectivity

Smart devices connectivity is one of the thermometer’s features that adds to convenience. A thermometer with sensor can automate your devices. Some models can even be controlled through voice assistants like Alexa.

Wifi and remote connectivity

The cloud platform Ambient Weather Network allows for data monitoring using different devices. If your thermometer has Wi-Fi connectivity, you can monitor your data from different devices and even share it online. Hence, WiFi and remote connectivity is a feature to consider if you want to share and view your data remotely.

Wireless capability, range, and sensor

An indoor-outdoor thermometer with wireless capability saves you from having to set-up those eyesore wires. However, models like this can be more expensive. These thermometers usually transmit and receive signals at 200-330 feet range. This may go lower depending on the presence of wireless signals and the structure of the home.

If you have a large home, it is important to go for a model with higher signal range.  That is why some users choose models like the Ambient Weather WS-10 because this allows many sensors and is capable of supporting up to 8 sensors.

If you opt to install outdoor sensors, choose a location with maximum ventilation and away from objects that radiate heat, preferably 5-6 feet away from the ground. In this way, you’ll get accurate readings.

Convenience and ease-of-use

Mounting convenience

The mounting options of your indoor display dictates how convenient it would be. Choose one with enough flexibility, capable of free-stand and wall-mounting. This way, you can conveniently place it near a power socket. A good mounting option also means that it would be easy to calibrate it once needed. Just choose a model that does not need constant calibration, as this can be inconvenient on your part.

Radiation shielding

Finding a shaded location for your sensor can be challenging. Hence, going for models with radiation shielding such as the WS-2902C is a great idea. These radiation shields provide shade for your sensor without obstructing the airflow. This helps with more accurate readings.

Display, readability, and backlight

Choose a thermometer with a large, clear and easy-to-read LCD display may it be morning or at night. A great model which satisfies this standard is the Ambient Weather WS-2902C. Also consider the viewing angles so that even if your model is directly exposed to sunlight, you won’t have difficulty reading the data in it. If you want convenience when viewing the thermometer at nighttime, choose one with backlight features. This way, you won’t have to turn on the lights to view what is on the screen.

Budget

20 dollars

If you just need it for basic use like temperature measurement, the low-price models costing around $20 are best for you. However, basic models do not offer colorful displays.

20 to 40 dollars

Indoor-outdoor thermometers that fall within this price range are in mid-level. These are capable of showing moon phases and measuring humidity. Some models even have Wi-Fi connectivity and colored displays.

 40 to 100 dollars

These are high-end and powerful thermometers. With its price come colorful displays and Wi-Fi connectivity. It is also compatible with both AC adapters and batteries as a power source. Thermometers in this price range can show readings of barometric pressure and wind speed.

FAQs

Why is it important to own an indoor-outdoor thermometer?

Having an indoor-outdoor thermometer helps you to plan your day, your activities and even know if your air conditioner or heater needs adjustment. It makes checking the temperature more convenient by simply connecting to an application in your phone.

What is the liquid in the thermometer for and how does a thermometer work?

The alcohol or mercury inside the thermometer’s glass tube rises or expands as it heats up. This means that the hotter the temperature of the location, the more the liquid will expand?

Where should I place my outdoor thermometer?

In order to not compromise the readings and get accurate data, never place it in direct sunlight. Choose a spot with a shade to protect it from extreme weather conditions. Also choose a spot with good ventilation and away from heat-producing surfaces. It is best to put it at least 4 to six feet above the ground surface.

Where should I place my indoor thermometer?

Choose a spot indoors that is free from obstructions like thick walls and metal because this can disrupt the signal. You can hang your thermometer on a wall or mount it in a tabletop. Same with outdoor thermometers, place it 4-6 feet above ground for better accuracy.

Which is more accurate, digital thermometer or fluid thermometers?

Digital or electronic thermometers are more accurate because of their digital displays and electronic sensors. If you want a convenient type which is easy to grab and use, you can avail plastic or glass thermometers which come in packs at a low price.

How to check if an outdoor thermometer is accurate?

To check if your outdoor thermometer offers precise and accurate readings, the best test you can do is the boiling point or ice test. The former is not as reliable as the latter because several factors like altitude and air pressure can affect the boiling point. To do the ice point testing, prepare a cup of ice water and place the thermometer sensor in it. A reading of 0 degrees Celsius or 32 degrees Fahrenheit means that your thermometer is accurate.

What is the normal range for an indoor thermometer?

Usually, indoor thermometers have a range of -40 to 158 degrees Fahrenheit. However, this can vary depending on your preference and your location.

Do I need to calibrate my thermometer, and how frequently should I do so?

Usually, thermometers have self-calibration so you do not have to manually do it. If you want to get more accuracy, doing calibration every month or year is enough.

What are some additional features I can find in indoor-outdoor thermometers?

Aside from measuring temperature, some thermometers are capable of showing moon phase, setting alarms and checking graphical interpretations. Some models also include barometric pressure and humidity readings,

Conclusion

The location you’re in is one of the determinants of the factors and features to consider when purchasing a thermometer. The Ambient Weather WS-2902 C Osprey Wi-Fi 10-in-1 station is the thermometer that ticks most of these, making it the overall winner. If you are looking for an affordable option with basic functions, the La Crosse Technology C85845 is the best model for you. In the end,  it depends on your preferences, location and prioritized features.

Last update on 2022-01-17 / Affiliate links / Images from Amazon Product Advertising API