Average Normal Body Temperature
The commonly accepted normal body temperature is 98.6°F (37°C). However, it can range between:

• 97°F to 99°F (36.1°C to 37.2°C) for most healthy adults.

Temperature Can Vary Based On

• Time of day: Lower in the morning, slightly higher in the late afternoon or evening
• Age: Older adults may have slightly lower temperatures
• Activity: Physical exertion or exercise can temporarily raise temperature
• Menstrual cycle: Women’s body temperature may rise during ovulation
• Measurement method:
  • Oral: 97.6°F to 99.6°F (36.5°C to 37.5°C)
  • Rectal: 98.6°F to 100.4°F (37°C to 38°C)
  • Armpit (Axillary): 96.6°F to 98.6°F (35.9°C to 37°C)
  • Forehead (Temporal): Similar to oral or slightly lower

Fever
A temperature above 100.4°F (38°C) usually indicates a fever and may suggest an infection or illness.

Low Body Temperature (Hypothermia)
A reading below 95°F (35°C) is considered abnormally low and may be dangerous if not addressed.

When to See a Doctor

• Persistent high fever
• Fever with chills, rash, or confusion
• Low body temperature that causes shivering, weakness, or drowsiness