[CK] FEVER. Rectal >100.3 (Oral 99.5, Axillary 98.5)

• • If your 2-year-old child's oral temperature is 101°F (38.3°C), his or her rectal or ear temperature may be about 102°F (38.9°C). Remember, a child has a fever when his or her temperature is 100.4°F (38°C) or higher, measured rectally.
  • If your axillary temperature is 100°F (37.8°C), your oral temperature is about 101°F (38.3°C).

Comparison of temperatures in Fahrenheit by method

AXILLARY/FOREHEAD (°F)	ORAL (°F)	RECTAL/EAR (°F)
98.4–99.3	99.5–99.9	100.4–101
99.4–101.1	100–101.5	101.1–102.4
101.2–102	101.6–102.4	102.5–103.5
102.1–103.1	102.5–103.5	103.6–104.6
103.2–104	103.6–104.6	104.7–105.6