A temporal artery thermometer may be more expensive than other types of thermometers. This type of thermometer may be less accurate than other types. Direct sunlight, cold temperatures or a sweaty forehead can affect temperature readings.

Are temporal artery thermometers accurate for adults?

Temporal Artery Thermometers

Temporal thermometer readings average about the same as rectal and ear thermometer readings in some studies, but lower in others. These thermometers seem to have the most inconsistencies in how they compare to other methods.

Which temperature is considered to be the most accurate?

Rectal temperatures are considered most accurate indication of the body's temperature. Oral and axillary temperature readings are about ½° to 1°F (. 3°C to .