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| Meta Title | Normal Body Temperature: Babies, Kids, Adults |
| Meta Description | What we used to think of as a "normal" body temperature may be outdated. Here’s what you need to know about body temperature, how to measure it, and when it could be a fever. |
| Meta Canonical | null |
| Boilerpipe Text | The average “normal” body temperature is around 98.6°F (37°C), but this can vary depending on age and other factors. Taking your temperature orally, rectally, or in the armpit can also impact your reading.
A body temperature reading above or below the average doesn’t automatically mean you’re sick. Several factors can influence your body temperature, including age, sex, time of day, and activity level.
Read on to learn about healthy body temperature ranges for babies, kids, adults, and older adults.
People over the age of 64 generally have more trouble adjusting to sudden changes in temperature as quickly as younger people. In general, older people have
more difficulty conserving heat
. They’re also more likely to have lower body temperatures.
Age
Oral
Rectal/Ear
Armpit
Adults
96–98°F
(35.6–36.7°C)
97–99°F
(36.1–37.2°C)
95–97°F
(35–36.1°C)
Adults over age 65
93–98.6°F
(33.9–37°C)
94–99.6°F
(34.4–37.6°C)
92–97.6°F
(33.3–36.4°C)
Identifying your normal range can make knowing when you have a fever easier. Keep in mind that average body temperature
varies
from person to person. Your body temperature might be up to 1°F (0.6°C) higher or lower than the guidelines above.
There are four different ways to take your or a family member’s temperature. However, the reading can vary from one method to the next.
The chart below shows which method is
recommended
for each age group:
Age
Rectal
Temporal (forehead)
Oral
Tympanic (ear)
Under 3 months
X
3–6 months
X
X
6 months–3 years
X
X
X
4 years–teens
X
X
X
Adults
X
X
X
Older adults
X
X
X
You may have had your temperature checked under your arm, in the armpit. This method isn’t as accurate and not recommended.
German doctor Carl Wunderlich identified the average body temperature of 98.6°F (37°C) during the 19th century. However, many studies have since determined that that isn’t always the case.
A
2019 study
found that the average body temperature is 97.86°F (36.59°C), slightly lower than initially thought many years ago.
However, it’s best to take this information with a grain of salt since no single number defines your average body temperature. Instead, it’s best to look at a temperature range that may be higher or lower than the average.
Here are some of the factors that affect body temperature:
time of day
older age
frequency of exercise
weather
location of temperature reading
hormone levels
being overweight
A higher-than-normal thermometer reading can be a sign of a fever.
Fever is defined as a temperature of
100.9°F (38.3°C)
or higher. As mentioned previously, the exact reading is dependent upon a few factors.
If your temperature is elevated above the normal range described earlier in the article, you may have a fever. Generally, a reading that’s 2°F (1.1°C) above your normal temperature is usually a sign of a fever.
Our bodies have a built-in
temperature control system.
This operation raises the body temperature in response to disease and infection, which you can sometimes fight without any intervention.
With time and rest, your body temperature will likely return to normal without treatment.
Is 98.6 a regular temperature?
98.6 °F (37°C) is generally considered a normal temperature, though every person’s normal temperature is different and may be slightly lower or higher.
Is 96.8 an average temp?
Though 96.8 °F (36°C) might be considered a low temperature, normal temperature is a range. Most people’s normal temperature falls between about 97°F (36°C) and 99°F (37°C), but it could be a little higher or lower.
Is low temperature a kind of fever?
Temperature that’s too low is considered
hypothermia
. This serious condition occurs when you lose too much body heat. For adults, a body temperature that dips below 95°F (35°C) is a sign of hypothermia.
Most people associate hypothermia with being outside in cold weather for long periods of time, but it can also occur indoors.
Babies
and
older adults
are more susceptible.
Hypothermia in babies
occurs when their body temperature is 97°F (36.1°C) or lower, and it can also be a sign of
severe sepsis in adults
.
The average normal body temperature is commonly accepted to be 98.6°F (37°C), but this can fluctuate based on age and various factors. How you measure your temperature can also affect your reading.
That said, when you develop a fever, it usually goes away with rest. However, seek treatment if it becomes too high or lasts too long.
Be mindful of your temperature getting too low as well, as hypothermia can also be life threatening and should be treated immediately. |
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# What Is the Normal Body Temperature Range?

[Medically reviewed]() by [Darragh O'Carroll, MD]() — Written by [Stephanie A. Wright, RN, BSN]() and [Carly Vandergriendt]() — [Updated on July 2, 2024]()
- [Temperature ranges](https://www.healthline.com/health/what-is-normal-body-temperature#temperature-ranges)
- [How to take a temperature](https://www.healthline.com/health/what-is-normal-body-temperature#how-to-take-a-temperature)
- [What affects temperature](https://www.healthline.com/health/what-is-normal-body-temperature#what-affects-temperature)
- [What’s considered a fever?](https://www.healthline.com/health/what-is-normal-body-temperature#whats-considered-a-fever)
- [Symptoms](https://www.healthline.com/health/what-is-normal-body-temperature#symptoms)
- [FAQ](https://www.healthline.com/health/what-is-normal-body-temperature#faq)
- [Takeaway](https://www.healthline.com/health/what-is-normal-body-temperature#takeaway)
The average “normal” body temperature is around 98.6°F (37°C), but this can vary depending on age and other factors. Taking your temperature orally, rectally, or in the armpit can also impact your reading.
A body temperature reading above or below the average doesn’t automatically mean you’re sick. Several factors can influence your body temperature, including age, sex, time of day, and activity level.
Read on to learn about healthy body temperature ranges for babies, kids, adults, and older adults.
## [Average temperatures ranges]()
Your body’s ability to [regulate temperature](https://www.cdc.gov/aging/emergency-preparedness/older-adults-extreme-heat/) changes as you get older.
People over the age of 64 generally have more trouble adjusting to sudden changes in temperature as quickly as younger people. In general, older people have [more difficulty conserving heat](https://www.research.colostate.edu/healthyagingcenter/aging-basics/body-temperature/). They’re also more likely to have lower body temperatures.
In children, the average temperature ranges between [97\.9°F to 100.2°F (36.6°C to 37.9°C)](https://caringforkids.cps.ca/handouts/health-conditions-and-treatments/fever_and_temperature_taking) when measured rectally, which is the primary recommended method [until age 3](https://www.ncbi.nlm.nih.gov/books/NBK553213/figure/article-41801.image.f1/). Below are average adult body temperatures, according to a [review of studies](https://www.ncbi.nlm.nih.gov/labs/pmc/articles/PMC6456186/) and [older research](https://www.sciencedirect.com/science/article/abs/pii/S0020748908003428):
| Age | Oral | Rectal/Ear | Armpit |
|---|---|---|---|
| Adults | 96–98°F (35.6–36.7°C) | 97–99°F (36.1–37.2°C) | 95–97°F (35–36.1°C) |
| Adults over age 65 | 93–98.6°F (33.9–37°C) | 94–99.6°F (34.4–37.6°C) | 92–97.6°F (33.3–36.4°C) |
Identifying your normal range can make knowing when you have a fever easier. Keep in mind that average body temperature [varies](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857558/) from person to person. Your body temperature might be up to 1°F (0.6°C) higher or lower than the guidelines above.
## [How to take your temperature]()
There are four different ways to take your or a family member’s temperature. However, the reading can vary from one method to the next.
The chart below shows which method is [recommended](https://www.ncbi.nlm.nih.gov/books/NBK553213/figure/article-41801.image.f1/) for each age group:
| Age | Rectal | Temporal (forehead) | Oral | Tympanic (ear) |
|---|---|---|---|---|
| Under 3 months | X | | | |
| 3–6 months | X | X | | |
| 6 months–3 years | X | X | | X |
| 4 years–teens | | X | X | X |
| Adults | | X | X | X |
| Older adults | | X | X | X |
You may have had your temperature checked under your arm, in the armpit. This method isn’t as accurate and not recommended.
## [What factors can affect your temperature?]()
German doctor Carl Wunderlich identified the average body temperature of 98.6°F (37°C) during the 19th century. However, many studies have since determined that that isn’t always the case.
A [2019 study](https://academic.oup.com/ofid/article/6/4/ofz032/5435701?login=true) found that the average body temperature is 97.86°F (36.59°C), slightly lower than initially thought many years ago.
However, it’s best to take this information with a grain of salt since no single number defines your average body temperature. Instead, it’s best to look at a temperature range that may be higher or lower than the average.
Here are some of the factors that affect body temperature:
- time of day
- [older age](https://www.research.colostate.edu/healthyagingcenter/aging-basics/body-temperature/)
- frequency of exercise
- weather
- location of temperature reading
- [hormone levels](https://pubmed.ncbi.nlm.nih.gov/36787810/)
- [being overweight](https://www.nature.com/articles/s41366-018-0218-7)
## [What temperature is considered a fever?]()
A higher-than-normal thermometer reading can be a sign of a fever.
Fever is defined as a temperature of [100\.9°F (38.3°C)](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9810860/) or higher. As mentioned previously, the exact reading is dependent upon a few factors.
If your temperature is elevated above the normal range described earlier in the article, you may have a fever. Generally, a reading that’s 2°F (1.1°C) above your normal temperature is usually a sign of a fever.
## [Fever symptoms]()
Fevers can be accompanied by other [signs and symptoms](https://www.healthline.com/health/fever-symptoms), including [sweating](https://www.healthline.com/health/sweating) and [chills](https://www.healthline.com/health/chills), [headache](https://www.healthline.com/health/headache-warning-signs), and more.
Our bodies have a built-in [temperature control system.](http://sciencedirect.com/science/article/pii/S0896627319305938) This operation raises the body temperature in response to disease and infection, which you can sometimes fight without any intervention.
With time and rest, your body temperature will likely return to normal without treatment.
### When should I call my doctor if I have a fever?
Often, a fever will go away on its own without treatment. However, you’ll want to seek medical advice if you have a fever and [any of the following:](https://www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults)
- trouble breathing or loss of consciousness
- severe pain
- [skin rash](https://www.medicalnewstoday.com/articles/317999)
- swelling
- pain when urinating
- persistent cough
- confusion or sleepiness
- [unexplained bleeding or bruising](https://www.medicalnewstoday.com/articles/random-bruising#causes)
- persistent diarrhea, vomiting, or both
- [headache with a stiff neck](https://www.healthline.com/health/stiff-neck-and-headache)
- feeling unwell
- fever that has lasted for more than 2 days
When it comes to children, speak with a doctor if:
- your infant is under 3 months old with a fever
- your child ages 3 months to 3 years and has a temperature of 102°F (38.9°C)
- your child is over 3 years old and has a temperature of 103°F (39.4°C).
- your child has a temperature over 104°F (40°C)
- your child is shivering for more than 30 minutes, is unable to move an arm or leg normally, appears dehydrated, has pain with urination, or looks very ill.
Learn more: [Fever in babies.](https://www.healthline.com/health/parenting/how-to-bring-down-baby-fever)
## [Frequently asked questions]()
### Is 98.6 a regular temperature?
98\.6 °F (37°C) is generally considered a normal temperature, though every person’s normal temperature is different and may be slightly lower or higher.
### Is 96.8 an average temp?
Though 96.8 °F (36°C) might be considered a low temperature, normal temperature is a range. Most people’s normal temperature falls between about 97°F (36°C) and 99°F (37°C), but it could be a little higher or lower.
### Is low temperature a kind of fever?
Temperature that’s too low is considered [hypothermia](https://www.cdc.gov/disasters/winter/staysafe/hypothermia.html). This serious condition occurs when you lose too much body heat. For adults, a body temperature that dips below 95°F (35°C) is a sign of hypothermia.
Most people associate hypothermia with being outside in cold weather for long periods of time, but it can also occur indoors. [Babies](https://www.merckmanuals.com/professional/pediatrics/perinatal-problems/hypothermia-in-neonates) and [older adults](https://www.cdc.gov/aging/emergency-preparedness/older-adults-extreme-cold/index.html) are more susceptible. [Hypothermia in babies](https://www.healthline.com/health/parenting/baby-temperature-low) occurs when their body temperature is 97°F (36.1°C) or lower, and it can also be a sign of [severe sepsis in adults](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6601416/).
## [Takeaway]()
The average normal body temperature is commonly accepted to be 98.6°F (37°C), but this can fluctuate based on age and various factors. How you measure your temperature can also affect your reading.
That said, when you develop a fever, it usually goes away with rest. However, seek treatment if it becomes too high or lasts too long.
Be mindful of your temperature getting too low as well, as hypothermia can also be life threatening and should be treated immediately.
If you need help finding a primary care doctor, [then check out our FindCare tool here.](https://care.healthline.com/find-care/specialty/primary-care-doctors)
[Read this article in Spanish](https://www.healthline.com/health/es/cual-es-el-rango-normal-de-la-temperatura-corporal).
### How we reviewed this article:
Sources
History
Healthline has strict sourcing guidelines and relies on peer-reviewed studies, academic research institutions, and medical journals and associations. We only use quality, credible sources to ensure content accuracy and integrity. You can learn more about how we ensure our content is accurate and current by reading our [editorial policy](https://www.healthline.com/about/process).
- Bastardot F, et al. (2018). Association of body temperature with obesity. The CoLaus study.
<https://www.nature.com/articles/s41366-018-0218-7>
- Diamond A, et al. (2021). One size does not fit all: Assuming the same normal body temperature for everyone is not justified.
<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857558/>
- Fever and temperature taking. (2022).
<https://caringforkids.cps.ca/handouts/health-conditions-and-treatments/fever_and_temperature_taking>
- Fever in adults: When to worry. (2023).
<https://www.health.harvard.edu/diseases-and-conditions/treating-fever-in-adults>
- Fever in children: Learn More – fever in children: When to see a doctor. (2022).
<https://www.ncbi.nlm.nih.gov/books/NBK279456/>
- Geneva II, et al. (2019). Normal body temperature: A systematic review.
<https://academic.oup.com/ofid/article/6/4/ofz032/5435701?login=true>
- Greenfield AM, et al. (2023). Sex differences in thermal sensitivity and perception: Implications for behavioral and autonomic thermoregulation.
<https://pubmed.ncbi.nlm.nih.gov/36787810/>
- Kapoor M, et al. (2022). The symptomatology of fever: A step towards qualitative definition of fever.
<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9810860/>
- Kregel K. (n.d.). Body temperature.
<https://www.research.colostate.edu/healthyagingcenter/aging-basics/body-temperature/>
- Lattari Balest A. (2023). Hypothermia in neonates.
<https://www.merckmanuals.com/professional/pediatrics/perinatal-problems/hypothermia-in-neonates>
- Lu Shu-Hua, et al. (2009). Normal body temperature and the effects of age, sex, ambient temperature and body mass index on normal oral temperature: A prospective, comparative study.
<https://www.sciencedirect.com/science/article/abs/pii/S0020748908003428>
- Older adults and extreme heat. (2021).
<https://www.cdc.gov/aging/emergency-preparedness/older-adults-extreme-heat/>
- Older adults and extreme cold. (2021).
<https://www.cdc.gov/aging/emergency-preparedness/older-adults-extreme-cold/index.html>
- Rumbus Z, et al. (2019). Fever, hypothermia, and mortality in sepsis.
<https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6601416/>
- Sapra A, et al. (2023). V ital sign tables table 1. vital sign assessment.
<https://www.ncbi.nlm.nih.gov/books/NBK553213/figure/article-41801.image.f1/>
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[Medically reviewed]() by [Darragh O'Carroll, MD]() — Written by [Stephanie A. Wright, RN, BSN]() and [Carly Vandergriendt]() — [Updated on July 2, 2024]()
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| Readable Markdown | The average “normal” body temperature is around 98.6°F (37°C), but this can vary depending on age and other factors. Taking your temperature orally, rectally, or in the armpit can also impact your reading.
A body temperature reading above or below the average doesn’t automatically mean you’re sick. Several factors can influence your body temperature, including age, sex, time of day, and activity level.
Read on to learn about healthy body temperature ranges for babies, kids, adults, and older adults.
People over the age of 64 generally have more trouble adjusting to sudden changes in temperature as quickly as younger people. In general, older people have [more difficulty conserving heat](https://www.research.colostate.edu/healthyagingcenter/aging-basics/body-temperature/). They’re also more likely to have lower body temperatures.
| Age | Oral | Rectal/Ear | Armpit |
|---|---|---|---|
| Adults | 96–98°F (35.6–36.7°C) | 97–99°F (36.1–37.2°C) | 95–97°F (35–36.1°C) |
| Adults over age 65 | 93–98.6°F (33.9–37°C) | 94–99.6°F (34.4–37.6°C) | 92–97.6°F (33.3–36.4°C) |
Identifying your normal range can make knowing when you have a fever easier. Keep in mind that average body temperature [varies](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7857558/) from person to person. Your body temperature might be up to 1°F (0.6°C) higher or lower than the guidelines above.
There are four different ways to take your or a family member’s temperature. However, the reading can vary from one method to the next.
The chart below shows which method is [recommended](https://www.ncbi.nlm.nih.gov/books/NBK553213/figure/article-41801.image.f1/) for each age group:
| Age | Rectal | Temporal (forehead) | Oral | Tympanic (ear) |
|---|---|---|---|---|
| Under 3 months | X | | | |
| 3–6 months | X | X | | |
| 6 months–3 years | X | X | | X |
| 4 years–teens | | X | X | X |
| Adults | | X | X | X |
| Older adults | | X | X | X |
You may have had your temperature checked under your arm, in the armpit. This method isn’t as accurate and not recommended.
German doctor Carl Wunderlich identified the average body temperature of 98.6°F (37°C) during the 19th century. However, many studies have since determined that that isn’t always the case.
A [2019 study](https://academic.oup.com/ofid/article/6/4/ofz032/5435701?login=true) found that the average body temperature is 97.86°F (36.59°C), slightly lower than initially thought many years ago.
However, it’s best to take this information with a grain of salt since no single number defines your average body temperature. Instead, it’s best to look at a temperature range that may be higher or lower than the average.
Here are some of the factors that affect body temperature:
- time of day
- [older age](https://www.research.colostate.edu/healthyagingcenter/aging-basics/body-temperature/)
- frequency of exercise
- weather
- location of temperature reading
- [hormone levels](https://pubmed.ncbi.nlm.nih.gov/36787810/)
- [being overweight](https://www.nature.com/articles/s41366-018-0218-7)
A higher-than-normal thermometer reading can be a sign of a fever.
Fever is defined as a temperature of [100\.9°F (38.3°C)](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9810860/) or higher. As mentioned previously, the exact reading is dependent upon a few factors.
If your temperature is elevated above the normal range described earlier in the article, you may have a fever. Generally, a reading that’s 2°F (1.1°C) above your normal temperature is usually a sign of a fever.
Our bodies have a built-in [temperature control system.](http://sciencedirect.com/science/article/pii/S0896627319305938) This operation raises the body temperature in response to disease and infection, which you can sometimes fight without any intervention.
With time and rest, your body temperature will likely return to normal without treatment.
Is 98.6 a regular temperature?
98\.6 °F (37°C) is generally considered a normal temperature, though every person’s normal temperature is different and may be slightly lower or higher.
Is 96.8 an average temp?
Though 96.8 °F (36°C) might be considered a low temperature, normal temperature is a range. Most people’s normal temperature falls between about 97°F (36°C) and 99°F (37°C), but it could be a little higher or lower.
Is low temperature a kind of fever?
Temperature that’s too low is considered [hypothermia](https://www.cdc.gov/disasters/winter/staysafe/hypothermia.html). This serious condition occurs when you lose too much body heat. For adults, a body temperature that dips below 95°F (35°C) is a sign of hypothermia.
Most people associate hypothermia with being outside in cold weather for long periods of time, but it can also occur indoors. [Babies](https://www.merckmanuals.com/professional/pediatrics/perinatal-problems/hypothermia-in-neonates) and [older adults](https://www.cdc.gov/aging/emergency-preparedness/older-adults-extreme-cold/index.html) are more susceptible. [Hypothermia in babies](https://www.healthline.com/health/parenting/baby-temperature-low) occurs when their body temperature is 97°F (36.1°C) or lower, and it can also be a sign of [severe sepsis in adults](https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6601416/).
The average normal body temperature is commonly accepted to be 98.6°F (37°C), but this can fluctuate based on age and various factors. How you measure your temperature can also affect your reading.
That said, when you develop a fever, it usually goes away with rest. However, seek treatment if it becomes too high or lasts too long.
Be mindful of your temperature getting too low as well, as hypothermia can also be life threatening and should be treated immediately. |
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