10 Best Smart Thermometer For Greenhouse 2025 in the United States

The SensorPush HT.w is a smart temperature and humidity sensor that fits well for greenhouse monitoring and other environments needing precise climate control. It covers temperatures up to 60°C, which is generally sufficient for most greenhouse conditions. Its Bluetooth connectivity allows easy setup and reliable data updates within about 100 meters in open spaces, though walls can reduce this range. For those who want remote access beyond Bluetooth range, an optional WiFi Gateway is available, which adds cloud storage and real-time monitoring from anywhere.

One of the strong points is the straightforward installation and user-friendly app, making it simple to track temperature, humidity, dew point, and vapor pressure deficit (VPD)—important factors for healthy plant growth. It also stores up to 45 days of data directly on the device and offers unlimited storage in the app, which is useful for long-term monitoring and pattern analysis. Alerts for unusual conditions can be sent to your phone, helping you react quickly to any issues.

The sensor is splash-resistant, so it can handle humid environments like greenhouses well, and the battery life of 1-2 years means low maintenance. It relies on Bluetooth for direct monitoring, so without the extra WiFi Gateway, you need to be near the sensor to check data, which might be limiting in larger greenhouses. While it measures both temperature and humidity, there are no additional sensors included (like soil moisture), which some greenhouse users might find helpful. This makes the SensorPush HT.w a reliable, easy-to-use smart thermometer and hygrometer providing accurate environmental data and good data logging suited for small to medium greenhouses. It is especially useful if you want hassle-free setup and dependable readings, though for full remote access you’ll need to invest in the WiFi Gateway separately.

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 GoveeLife WiFi Hygrometer Thermometer Sensors 3 Pack is a solid choice for those needing to monitor temperature and humidity in a greenhouse. It offers good accuracy, with temperature readings precise to about ±0.3℃ and humidity accuracy within ±3% RH, which is reliable enough for most plant-growing environments. The sensors connect via WiFi to an app that lets you check conditions remotely, set alerts for changes, and receive notifications by app or email—helpful for catching issues early. With data stored for up to two years and trends viewable for 20 days, you can track your greenhouse environment over time and export the info if needed. The long battery life (about 2 years on included AAA batteries) means less frequent replacements, which is convenient. The compact design also makes it easy to place sensors in various spots.

However, it only works with 2.4GHz WiFi networks and requires a specific gateway device for alerts, which could complicate setup if your home network is different or if you want a simpler system. Also, while it’s labeled for indoor use, it may not be fully waterproof or rugged enough for very humid or outdoor greenhouse conditions without some protection. This product is well suited for hobbyists or small greenhouse owners who want accurate, remote monitoring and detailed data without complex installation.