what is a high temp for an adult
For most adults, a “high” temperature (fever) starts at about 100.4°F (38°C) or higher when measured orally.
Quick Scoop: Key Numbers
- Normal adult temperature is roughly 97°F to 99°F (36.1°C to 37.2°C), depending on the person and time of day.
- A temperature of 100.4°F (38°C) or above is generally considered a fever in adults.
- Many health sources advise seeking medical care if an adult’s fever reaches around 103°F (39.4°C) or higher, or if they feel very unwell, confused, short of breath, or have chest pain.
- Extremely high fevers (around 106–107°F, about 41–41.5°C) are a medical emergency and need urgent treatment.
When to Worry
You should contact a healthcare professional or urgent care if:
- Your temperature is around 103°F (39.4°C) or higher.
- The fever lasts more than 3 days, keeps coming back, or is getting higher instead of better.
- You have warning signs like:
- Trouble breathing or chest pain.
- Confusion, difficulty staying awake, or severe headache.
- Stiff neck, rash, or constant vomiting.
- Severe pain anywhere in the body.
Quick Example
If an adult checks their temperature and it’s 100.8°F, that counts as a fever but isn’t automatically dangerous; rest, fluids, and monitoring are usually appropriate if they otherwise feel okay.
If that same person’s temperature climbs to 103°F and they feel very weak or short of breath, they should be seen by a doctor promptly.
If you or someone with you feels very unwell or you’re unsure, it’s safer to call a medical professional or emergency services, especially with very high readings or worrying symptoms.
Information gathered from public forums or data available on the internet and portrayed here.
