10 Best Smart Thermometer For Greenhouse 2025 in the United States

The Govee Indoor Hygrometer Thermometer is a solid choice for those looking to monitor temperature and humidity levels, especially in a greenhouse setting. One of its standout features is its impressive accuracy, with temperature readings precise to ±0.54°F and humidity levels to ±3%RH. This level of accuracy is crucial for maintaining the ideal conditions for plant growth. Additionally, with a fast refresh rate of just 2 seconds, you’ll always have up-to-date information at your fingertips.

Connectivity is another strength, as the thermometer uses Bluetooth with a range of up to 196 feet, allowing you to receive immediate alerts through the Govee Home app if your preset temperature or humidity thresholds are breached. This feature ensures that you can take prompt action to protect your plants.

The large 3-inch LCD display is user-friendly, making it easy to read the current conditions at a glance. Plus, the ability to log data over 2 years and view it in a clear graph format can be beneficial for tracking trends in your greenhouse environment. However, the device operates on batteries, which means you'll need to keep an eye on battery life and potentially replace them over time. Additionally, while it offers 20 days of online data storage, some users may prefer unlimited storage for ongoing monitoring.

The Govee Hygrometer Thermometer H5075 stands out in the smart thermometer category, particularly for greenhouse enthusiasts and home gardeners. One of its key strengths is its accuracy, with temperature readings precise to ±0.54°F and humidity to ±3% relative humidity. This level of precision is crucial for maintaining optimal growing conditions. The rapid refresh rate of up to 2 seconds means you’ll always be alerted to changes in your greenhouse environment promptly.

The product also offers excellent smart features, including remote monitoring through an app, which is particularly useful for users who may not always be physically present in their greenhouse. Instant alerts notify you when temperature or humidity levels deviate from set ranges, which can help prevent damage to plants. For data-driven gardeners, the ability to log and export two years of historical data in CSV format is a significant advantage, allowing you to analyze trends and make informed decisions.

However, there are a few drawbacks to consider. While the Bluetooth connectivity is convenient, it might limit the range if you have a larger greenhouse or if there are obstacles between the device and your smartphone. Additionally, the design is tabletop, which might not be ideal for all greenhouse setups—users may need to find appropriate surfaces to place the device correctly. The display is bright and easy to read, but some users might prefer a more rugged or weatherproof design, especially in fluctuating greenhouse conditions. Battery life and power source details are not highlighted, which may leave some users questioning its longevity in a greenhouse environment.

The Inkbird WiFi ITC-308 Digital Temperature Controller Thermostat is designed to meet the needs of greenhouse owners with its comprehensive feature set. Its temperature range and accuracy are crucial for maintaining optimal growing conditions. The dual relay outputs can control both heating and cooling devices, which is ideal for dynamic greenhouse environments. The device supports both Celsius and Fahrenheit readings and allows for temperature calibration, enhancing its precision.

Remote monitoring through the INKBIRD app, compatible with both iOS and Android platforms, adds a layer of convenience, enabling users to manage the greenhouse environment from anywhere using a 2.4 GHz Wi-Fi connection. High and low-temperature alarms provide timely alerts for any temperature deviations or sensor malfunctions, ensuring prompt corrective actions can be taken. The plug-n-play design makes it user-friendly and straightforward to install without the need for professional assistance.

Its power source supports up to 1100 W (110 V), which should be adequate for most greenhouse heating or cooling equipment. The Inkbird WiFi ITC-308 provides a reliable, user-friendly solution for greenhouse temperature control, with its major strengths being remote access, dual control capabilities, and alert systems.