Most of us know to pay attention when a thermometer reads high. A low reading, though, tends to leave people wondering what it means. You check your temperature and see 96.8°F, or even 96.2°F, and suddenly 98.6°F starts to feel like the only “right” answer.

The good news is that a low reading is often nothing to worry about. It is also worth knowing when it can mean something more, so you can respond calmly and appropriately.

What Counts as a Normal Temperature?

The familiar 98.6°F (37°C) figure is an average, not a rule. In healthy adults, a normal temperature can fall anywhere from about 97°F to 99°F (36.1°C to 37.2°C). Your own baseline may sit a little above or below that, and it changes through the day, usually lowest in the early morning and highest in the late afternoon.

Because of that, a single reading of 97.2°F or 97.5°F is rarely a concern on its own.

What Counts as Low?

A temperature starts to be considered genuinely low when it falls below about 95°F (35°C) in an adult. That range is called hypothermia and is treated as a medical concern. Readings between roughly 95°F and 97°F are in a gray zone, where the cause matters more than the number itself.

Common Reasons for a Low Reading That Are Not Serious

Many low readings come from things that have nothing to do with illness.

Measurement Factors

• Taking a forehead or ear reading right after coming in from the cold
• A thermometer not positioned correctly
• Measuring on skin that is damp, covered, or cool
• Checking too soon after a cold drink for an oral reading

Time of Day

Body temperature naturally dips during sleep and in the early morning. A reading taken right after waking is often lower than one taken later in the day.

Your Personal Baseline

Some healthy people simply run cooler. If your usual readings are in the mid 97s, a reading of 97.3°F is normal for you.

Environment

A cold room, light clothing, or wind can all lower surface readings, especially on the forehead or underarm.

Causes That Deserve More Attention

If a low temperature is real and persistent, it can have an underlying cause.

• Cold exposure: Spending a long time in the cold, especially in wet clothing, can lower core temperature.
• Underactive thyroid: The thyroid helps regulate body temperature, and an underactive one can cause a lower baseline along with fatigue and feeling cold.
• Severe infection: In some cases, particularly in infants and older adults, a serious infection can cause temperature to drop instead of rise.
• Alcohol and certain medications: They can interfere with how the body regulates temperature.
• Poor nutrition or low body weight: Less energy and body fat can make it harder to stay warm.
• Diabetes or low blood sugar: These can affect temperature regulation in some people.
• Age: Infants and older adults regulate temperature less efficiently and are more affected by cold.

Signs That Need Urgent Attention

A low temperature together with other symptoms is a different situation. Seek medical care promptly if you or someone else has a low temperature and:

• Is shivering uncontrollably, or has stopped shivering despite being cold
• Is confused, drowsy, or slurring words
• Has very slow or shallow breathing
• Has cold, pale, or bluish skin
• Seems unusually weak or unresponsive

For emergencies, call your local emergency number.

A Note About Babies and Older Adults

Infants cannot warm themselves as well as adults, and a low temperature in a baby can be a sign of illness. If a baby’s temperature is low and they seem unusually sleepy, are feeding poorly, or just do not seem like themselves, contact a doctor right away.

In older adults, infections do not always cause a fever. A low temperature along with confusion, weakness, or a change in behavior is worth taking seriously.

What to Do if You Get a Low Reading

Start with the simple checks.

• Make sure the room is a comfortable temperature, and warm up if you are cold
• Wait ten to fifteen minutes, then measure again
• Check that the thermometer is clean, positioned correctly, and used as directed
• Try the same method you normally use, so you can compare
• Notice how you feel, because symptoms matter as much as the number

If the repeat reading is back in your usual range and you feel fine, there is usually nothing more to do.

When to Contact a Doctor

It is worth a call if:

• Your temperature stays low across repeated, careful readings
• A low reading comes with fatigue, dizziness, confusion, or feeling unusually cold
• A baby or older adult has a low temperature
• You regularly run much cooler than usual and are not sure why

FAQ

Is 96.8°F too low?

For many people, no. A reading in the high 96s can be normal depending on the time of day, the method, and your baseline. If you feel well and a recheck is higher, it is usually fine.

Can a low temperature mean I am sick?

It can, but usually it does not. It is more likely to be a concern when it comes with other symptoms or in babies and older adults.

Why is my temperature lower in the morning?

Body temperature follows a daily rhythm and is generally lowest in the early morning.

Does a lower temperature mean a slow metabolism?

Not necessarily. Many things affect temperature, and a slightly lower baseline is not enough to say anything about metabolism.

What temperature is considered hypothermia?

In adults, a core temperature below about 95°F (35°C) is considered hypothermia and needs medical attention.