Adafruit PT100 RTD Temperature Sensor Amplifier - MAX31865 Resistance temperature detectors (RTDs) are temperature sensors that contain a resistor that changes resistance value as its temperature changes, basically a kind of thermistor.
Funduino DHT22 Temperature and humidity sensor The DHT22 measures humidity in the range of 0-100% (2-5% accuracy) and the temperature in the range of -40 to 125 ° C (0.5 ° C accuracy).
Funduino DHT11 Temperature and humidity sensor The DHT11 sensor measures approximately 20-80% (5% accuracy) and the temperature range of approx. 0-50 ° C (2 ° C accuracy).
Funduino Temperature sensor LM35 This temperature sensor LM35 is closed in an metal pin and water resistant. A 4.7k resistor is included, which is required as a pullup from the DATA to VCC line when using the sensor
Adafruit Universal Thermocouple Amplifier MAX31856 Breakout Thermocouples are very sensitive, requiring a good amplifier with a cold-compensation reference, as well as calculations to handle any non-linearities.
Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor Bosch has stepped up their game with their new BME280 sensor, an environmental sensor with temperature, barometric pressure and humidity!
10K Precision Epoxy Thermistor (3950 NTC) Need to measure something damp? This epoxy-coated precision 1% 10K thermistor is an inexpensive way to measure temperature in weather or liquids.
Adafruit Sensiron SHT31-D Temperature & Humidity Sensor Breakout Sensiron Temperature/Humidity sensors are some of the finest & highest-accuracy devices you can get. And, finally we have some that have a true I2C interface for easy reading. The SHT31-D sensor has an excellent ±2% relative humidity and ±0.3°C accuracy for most uses.
PT-100 Temperature Sensor Platinum resistance thermometers (PRTs) offer excellent accuracy over a wide temperature range (from -200 to +450 °C).
SparkFun IR Thermometer Evaluation Board - MLX90614 This is an evaluation board for the MLX90614 IR Thermometer. The sensor is connected to an ATmega328 running at 3.3V with a STK500 (Arduino) 8MHz bootloader. Code can be loaded through the FTDI basic interface and the Arduino environment.