If your temperature is normal underarm temperature will be around 976 f to 981f or 364 367 c. However this method of measuring body temperature is not as accurate as rectal measurement and has a low sensitivity for fever failing to determine three or four out of every ten fever measurements in children.

98 6 Degrees Fahrenheit Is No Longer The Normal Human Body
Underarm body temperature measurement. A thermometer is used to measure body temperature. Therefore normal axillary temperature would range between 976 degrees and 981 degrees. In adult patients the temperature of an axillary measurement is lower than a rectal measurement up to 19 c. Sometimes babies and young children have higher body temperature ranges than adults for armpit and ear measurements. The average normal oral temperature is 986f 37c. Temperature under the arm axillary is about 365 c 977 f.
The axillary temperature may be as much as two degrees lower than the rectal temperature. Its also commonly used to check temperature in infants to 5 year olds because it. A rectal temperature is 05f 03c to 1f 06c higher than an oral temperature. The thermometer is placed underarm with the bulb in the center of the armpit. The exact relationship between different types of temperature measurement is unclear. A normal body temperature for infants aged 02 years ranges from 979100.
Having in mind these facts you can conclude that body temperature may depend upon the place where it is measured. The advanced thermometer is a little size clinically exact thermometer with high exactness at 01c in the scope of 320 429c. A normal axillary temperature is between 966 359 c and 98 f 367 c. Body temperature changes slightly through the day and night and may change. The normal axillary temperature range is approximately between 347 c and 373 c. Though not as accurate as oral or rectal methods armpit is commonly used as a place for measuring the temperature.
However this is only possible up to a certain body mass and this type of measurement also takes a long time. It is quite a simple method to execute. Temperature taken under the arm usually is considered to be less accurate than most other body locations for measuring temperature. Measures internal heat level to 1tenth of a degree exactness for example 362 c in celsius. Underarm temperature is considered the safest way to check the body temperature of children under 3 months old. This underarm temperature is considered to be auxiliary and its temperature may vary for half or one degree.
This measurement also known as axillary temperature tends to be about half a degree to a degree below oral temperature 1. However the following general guidelines for temperature results are used. The normal axillary temperature is usually a degree lower than the oral by mouth temperature.