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 WiFi Temperature Sensor H5179 is a smart thermometer tailored for environments like greenhouses. It offers precise temperature and humidity readings, with an accuracy of ±0.54℉ for temperature and ±3%RH for humidity, thanks to its Swiss-made sensor. This accuracy is crucial for maintaining optimal conditions in sensitive environments. The device refreshes data every 2 seconds, ensuring real-time updates which can be monitored remotely via the Govee Home app. However, it does not support 5G WiFi, relying on stable WiFi and Bluetooth connections for functionality.

The sensor includes an alert function to notify users via the app if conditions fall outside preset ranges, allowing for quick responses to environmental changes. Setting these alerts is only possible through Bluetooth, which might be a minor inconvenience for some users. The sensor supports data storage for up to 20 days online and up to 2 years of historical data export, useful for tracking long-term trends. It comes with three AA batteries, providing flexibility in placement without the need for a constant power source. The inclusion of a lanyard loop further simplifies positioning within the greenhouse.

While it does not feature additional sensors beyond temperature and humidity, it excels in its primary functions with high accuracy and reliable performance. This makes it a practical choice for users needing detailed environmental monitoring, although those requiring support for more advanced connectivity or additional sensor types may need to look elsewhere.

The SwitchBot WiFi Thermometer Hygrometer 3 Pack with Hub Mini is a versatile and robust option for both indoor and outdoor use, including greenhouses. One of its key strengths is its IP65 dustproof and waterproof rating, which ensures it remains functional even in adverse weather conditions. The device's high accuracy, with readings precise to ± 1.8% relative humidity and ± 0.2 °C/0.36 °F, makes it reliable for monitoring environmental changes. The Swiss Sensirion sensor further contributes to quick and precise data sampling every 4 seconds, ensuring you receive up-to-date information.

Additionally, it is capable of measuring not only temperature and humidity but also dew point and Vapor Pressure Deficit (VPD), which is crucial for plant health in greenhouses. The smart alert feature is particularly beneficial, sending notifications to your device when preset thresholds are exceeded, allowing for prompt adjustments. The thermometer supports data export, offering up to 68 days of on-board storage and 2 years of in-app storage, with unlimited cloud storage. This makes it easy to track long-term trends and analyze data.

On the connectivity front, the inclusion of the SwitchBot Hub Mini allows for integration with voice assistants like Alexa, Google Home, and Siri, providing remote control and voice command capabilities. However, there are some drawbacks to consider. The device requires 6 AAA batteries, which are included, but frequent replacements might be needed depending on usage. Additionally, the product's dimensions are relatively compact, which is great for portability but could be less visible in larger settings. The reliance on an app for full functionality might be less ideal for those who prefer standalone devices. This thermometer is well-suited for tech-savvy users who require precise environmental monitoring in diverse settings, offering a comprehensive range of features that cater specifically to the needs of greenhouse management.