10 Best Temperature Data Loggers for Greenhouses in 2026: Smarter Crop Monitoring

Stable temperature and humidity can make the difference between healthy greenhouse growth and avoidable crop stress. The right data logger helps you spot overnight dips, heat spikes, and ventilation problems before plants show visible damage.

We compared 10 greenhouse-friendly monitors and recorders, from connected multi-sensor systems to simple USB loggers, so you can match data access, alarm features, sensor coverage, and budget to your growing setup.

Best 10 Temperature Data Loggers for Greenhouses Picks for 2026

Best Remote Greenhouse Monitor – YoLink X3 2-Pack

For growers who want temperature data loggers for greenhouses with remote access, the YoLink X3 kit combines two temperature-and-humidity sensors with a hub. The app provides readings, history, and configurable push, email, and SMS alerts, while offline logging continues when a sensor is disconnected from the hub.

Best For: Greenhouse owners who need long-range, remote monitoring and alerts for temperature and humidity.

Pros:

• Includes two sensors and a hub for monitoring multiple areas.
• Offers offline data logging and app-based temperature history.
• Provides up to five years of battery life and a temperature range of -22°F to 140°F.
• Supports YoLink long-range communication, Alexa temperature queries, and IFTTT triggers.

Cons:

• Humidity is not supported for Alexa voice queries.
• Alexa routines are not supported.
• Some additional notification and monitoring services are optional upgrades.

The X3 is a strong fit when remote alerts, extended battery life, and offline records matter more than a simple standalone display. Its two-sensor setup also makes it practical for comparing conditions in separate greenhouse areas.

Best Exportable Greenhouse Logger – WiFi Temperature & Humidity Sensor

This WiFi sensor is one of the more data-focused temperature data loggers for greenhouses, recording readings at adjustable intervals and supporting cloud history exports. It works over 2.4GHz WiFi without a subscription and can send alerts by text, email, buzzer, and flashing LED.

Best For: Growers, farm teams, and facility managers who need exportable records and shared monitoring access.

Pros:

• Stores more than 30 days of offline data and up to one year of cloud history, depending on update frequency.
• Exports records in CSV, Excel, or PDF formats.
• Supports unlimited team members and shared email alerts.
• Offers external probe support, plus temperature accuracy of ±0.6°F and humidity accuracy of ±3% RH.

Cons:

• Only compatible with 2.4GHz WiFi networks.
• External probe sensors are sold separately.
• The advertised battery runtime depends on a seven-hour charge and usage conditions.

Choose this model when documentation and collaboration are central to your greenhouse workflow. Its export options and long cloud-history window are useful for reviewing trends, while local alerts add a safeguard when phones or computers are not immediately available.

Best Multi-Sensor Greenhouse System – GoveeLife WiFi Gateway Thermo-Hygrometer

The GoveeLife three-pack is designed for growers who need temperature data loggers for greenhouses across several locations. Three waterproof sensors connect through the included WiFi gateway, delivering app-based readings and alerts over a stated range of up to 1,312 feet.

Best For: Larger greenhouses or properties needing multiple indoor and outdoor monitoring points.

Pros:

• Includes three sensors and one WiFi gateway.
• IP65 waterproof sensors are suitable for indoor and outdoor placement.
• Supports remote app monitoring and customizable temperature and humidity alerts.
• The gateway can pair with up to 30 sensors.

Cons:

• Sensors require the gateway to display data.
• It does not support 5GHz WiFi.
• The H5107 sensor is not compatible with Gateway 5042.

This system is a practical choice for mapping conditions across a greenhouse, patio, or adjacent growing areas. Its expandable gateway and weather-resistant sensors offer useful coverage, provided the installation uses a compatible gateway and 2.4GHz WiFi network.

Best CO2 Greenhouse Data Logger – Autopilot Desktop CO2 Monitor

The Autopilot APCEM2 goes beyond standard temperature data loggers for greenhouses by tracking CO2, relative humidity, and temperature together. Its display includes adjustable 24-hour or seven-day charts, while a low- or high-CO2 alarm helps flag conditions that may affect a grow room or greenhouse.

Best For: Indoor growers and greenhouse operators who need CO2 trends alongside temperature and humidity readings.

Pros:

• Monitors CO2, relative humidity, and temperature in one unit.
• Records statistics across adjustable 24-hour and seven-day periods.
• Uses a two-channel low-drift NDIR CO2 sensor with audible alarms.
• Includes multiple hanging options and a power adapter.

Cons:

• Operating temperature is limited to 32°F through 122°F.
• The external battery pack is not included.
• Its charting window is limited to 24 hours or seven days rather than long-term cloud history.

This is the better match when carbon dioxide is as important as temperature and humidity. It is a display-oriented logger for trend checking and local alarms, rather than a remote app-based monitoring system.

Best Bluetooth Greenhouse Monitor – TempAir Hygrometer Thermometer

For shoppers comparing temperature data loggers for greenhouses, the TempPro TempAir is a convenient Bluetooth option with temperature and humidity tracking, a backlit display, and two years of stored data that can be exported through its app. Its stated Bluetooth range is up to 260 feet without obstructions.

Best For: Greenhouse users who want app-based monitoring and long-term temperature and humidity history without registration.

Pros:

• Stores and exports up to two years of data.
• Provides stated accuracy of ±0.9°F and ±2% RH with readings refreshing every 10 seconds.
• Includes a large backlit display and visual comfort indicator.
• Monitors temperature and humidity from up to 260 feet away without obstructions.

Cons:

• Bluetooth connectivity is listed rather than Wi-Fi, so remote monitoring depends on phone range.
• The stated temperature range is 55°F to 140°F, which may not suit colder greenhouse conditions.
• Designed for tabletop mounting rather than a dedicated greenhouse mounting system.

The TempAir stands out when accessible app history and a clear local display matter more than network-based alerts. Check that its operating range and Bluetooth reach fit your greenhouse layout.

Best Wide-Range Greenhouse Logger – Supco SL300T Temperature Monitor

The Supco SL300T is a compact choice among temperature data loggers for greenhouses, recording conditions from -40°F to 185°F. It supports PC, delayed-start, and push-button operation, making it adaptable to scheduled or continuous monitoring in temperature-sensitive spaces.

Best For: Greenhouse, refrigeration, storage, and other applications requiring a broad temperature range and configurable recording modes.

Pros:

• Records temperatures from -40°F to 185°F.
• Offers PC, delayed-start, and push-button operation.
• Lets users choose memory rollover or stop-on-full recording.
• Compact USB-ready design measures approximately 3 inches long.

Cons:

• The supplied notes describe temperature recording but do not specify humidity measurement.
• The notes do not provide a stated measurement accuracy.
• Its configuration and data-transfer approach may be less convenient than a phone-based app.

Choose the SL300T when temperature range and recording flexibility are priorities. Its compact form also suits tight spaces, but buyers wanting humidity trends or wireless alerts should consider a different type of logger.

Best Alerting Greenhouse Sensor – Wireless Temperature and Humidity Logger

For greenhouse owners comparing temperature data loggers for greenhouses, this Bluetooth sensor combines automatic temperature and humidity readings with phone alerts and historical graphs. It records once per minute, supports CSV exports, and can sync from up to 330 feet away, although it is Bluetooth-only rather than Wi-Fi.

Best For: Users who want automatic logging, phone alerts, multi-phone monitoring, and exportable temperature and humidity history.

Pros:

• Automatically records temperature and humidity every minute.
• Sends alerts to phones and allows multiple phones to monitor sensors.
• Provides historical graphs and CSV export for Excel or Google Sheets.
• Offers up to 330 feet of Bluetooth range, with up to 40 days of out-of-range data syncing when back nearby.

Cons:

• Bluetooth-only; it does not provide Wi-Fi connectivity.
• Stated accuracy is ±1°F for temperature and ±3% for humidity.
• Walls and other obstructions reduce the stated 330-foot range.

This sensor is a strong fit for growers who value alerts and easy data analysis. Its automatic one-minute logging and CSV export are useful for reviewing trends, while the Bluetooth-only design requires attention to range and phone syncing.

Best USB Value – Elitech RC-5 Temperature Data Logger

For straightforward temperature data logging in greenhouses, the Elitech RC-5 combines a broad -30°C to 70°C (-22°F to 158°F) range with 32,000 recording points. Its built-in USB connector makes it easy to download readings and generate a PDF report without a separate cable or reader.

Best For: Greenhouse growers who want a compact, reusable logger for routine temperature tracking and simple report generation.

Pros:

• Stores up to 32,000 temperature readings across a wide measurement range.
• Built-in USB connector supports direct data downloads and PDF reports.
• LCD displays readings, logged points, and alarm status.
• Replaceable battery, low-power operation, and IP65 protection.

Cons:

• Records temperature only; it does not monitor humidity.
• Advanced settings require the free software.

The RC-5 is a practical pick when you need dependable temperature records without a more complex monitoring system. Its LCD, alarms, and USB workflow suit routine greenhouse checks and documentation.

Best Dual-Zone Monitor – Elitech DR-230-THDE Bluetooth Logger

Among temperature data loggers for greenhouses, the Elitech DR-230-THDE stands out for monitoring temperature and humidity in two zones at once. Its large 10.6-inch display, Bluetooth app, and configurable alerts are useful when readings need to be visible across a larger growing or storage area.

Best For: Larger greenhouse setups that need dual-zone temperature and humidity monitoring with phone-based data access.

Pros:

• Dual external sensors monitor two zones simultaneously.
• Stores 30,000 data points with automatic cyclic overwrite.
• Bluetooth connection and free app support charts, configuration, and PDF exports.
• Large display, adjustable alarms, and optional 110dB external siren.

Cons:

• Requires an external power connection; batteries are not required or included.
• Bluetooth range is listed at up to 147 feet, so remote access depends on placement.
• The 0.5°C temperature accuracy may not suit applications requiring tighter precision.

This model is more capable than a basic single-point logger, especially when humidity and two locations matter. Its power requirement and larger format make it better suited to a fixed installation than casual spot checks.

Best Compact Humidity Logger – Elitech RC-51H USB Recorder

The Elitech RC-51H is a compact option for greenhouse temperature data logging when humidity readings are also useful. Its pen-shaped, IP65-protected design fits narrow spaces, while the display shows current, maximum, and minimum readings along with the recording date and point count.

Best For: Growers who need a small temperature-and-humidity recorder for tight spaces, equipment areas, or documented monitoring.

Pros:

• Records temperature and humidity with a clear LCD display.
• Stores up to 32,000 points and supports programmable logging intervals and alarm ranges.
• Exports data in PDF format without requiring software.
• Pen-shaped IP65 design is dustproof, waterproof, and easy to place in gaps.

Cons:

• Temperature range tops out at 60°C, narrower than the RC-5.
• Listed response time is up to two minutes.
• Additional functions require Elitechlog software.

The RC-51H is a strong fit where compact placement and humidity tracking are more important than the widest temperature range. Its direct PDF export also simplifies recordkeeping for routine greenhouse monitoring.

How We Picked the Best Temperature Data Loggers for Greenhouses

We focused on the features that matter in real greenhouse monitoring: temperature accuracy, humidity measurement, recording capacity, export options, wireless range, alarm support, and ease of setup. The lineup includes Wi-Fi, Bluetooth, USB, and hub-based products because greenhouse layouts vary widely. Some growers need remote alerts across multiple zones, while others only need a dependable recorder they can download after a growing cycle.

We also considered practical details such as reusable memory, display readability, battery or power requirements, weather exposure, and whether a device is better suited to ambient monitoring, crop-zone checks, storage areas, or equipment diagnostics.

Quick Comparison

Best For	Recommended Type	Why It Stands Out
Remote monitoring	Wi-Fi or hub-based sensor	Review readings and receive alerts away from the greenhouse
Multiple growing zones	Multi-sensor kit	Tracks separate beds, benches, or structures
Simple downloadable records	USB data logger	Low setup complexity and straightforward data export
Short-range mobile access	Bluetooth logger	Convenient phone-based readings without a subscription
Atmospheric management	CO₂ monitor and logger	Adds carbon-dioxide data to temperature tracking

Key Buying Factors for Temperature Data Loggers for Greenhouses

Temperature and Humidity Range

Choose a logger that covers your expected seasonal conditions and provides enough accuracy for your crops. Humidity tracking is especially useful for identifying condensation, fungal-risk conditions, and ineffective ventilation.

Connectivity and Alerts

Wi-Fi systems are the most convenient for remote access, but they depend on reliable internet and often require a hub or app. Bluetooth models work well for nearby inspections. USB units are ideal when you prefer offline collection and manual downloads. If frost or overheating can cause major losses, prioritize configurable high- and low-temperature alarms.

Memory, Export, and Battery Life

Estimate how often you will visit the greenhouse and select enough storage for that interval. A logger with downloadable CSV or spreadsheet-compatible data makes it easier to document conditions and compare trends. Check whether batteries are replaceable, rechargeable, or expected to last for the full monitoring period.

Placement and Durability

Keep the sensor near plant height and out of direct sun, irrigation spray, heaters, and exterior walls. For exposed or humid locations, verify the product’s weather-resistance claims rather than assuming every “outdoor” sensor is waterproof.

Who Should Buy Which Temperature Data Loggers for Greenhouses?

Choose a Wi-Fi or hub-based system if you manage a remote property, want phone alerts, or need readings from several locations. A multi-pack is usually the best fit for larger greenhouses with separate benches or climate zones. Bluetooth is a practical choice for hobby growers who inspect plants regularly and want quick phone access without ongoing service fees.

USB loggers are best for travelers, researchers, and growers who need an inexpensive historical record rather than live notifications. If your main concern is ventilation or enrichment, a CO₂-capable monitor can add useful context beyond temperature and humidity. Whichever model you choose, calibrate or verify it periodically and place it where the recorded conditions represent the crop—not the coolest corner or a sun-heated surface.