A fever can happen with a common cold, but it’s not one of the hallmark symptoms. When it does show up, it’s typically low grade, meaning your temperature stays between 99.1 and 100.4°F (37.3 to 38.0°C). Adults with a cold often have no fever at all, while children are more likely to run a mild one.
How Often Colds Cause a Fever
The CDC lists fever as a possible cold symptom but qualifies it as “usually low grade in older children and adults.” That phrasing is telling. Fever sits at the bottom of the symptom list, well behind the runny nose, sore throat, sneezing, and cough that define a typical cold. Most adults will feel run down and congested without their temperature ever climbing above normal.
Children are a different story. Their immune systems are still developing, and they tend to mount a fever response more readily than adults do. A toddler or young child with a cold may spike a low-grade fever in the first couple of days, even when the illness is nothing more than a standard rhinovirus. This is a normal part of how their bodies fight infection, not necessarily a sign that something more serious is going on.
When Fever Appears and How Long It Lasts
Cold symptoms generally peak within two to three days of infection, and any fever that occurs tends to follow that same timeline. It typically shows up early, around day one or two, and resolves before the other symptoms do. The entire cold usually lasts less than a week, and the fever portion is shorter still, often clearing within a day or two.
If a fever arrives later in the illness, say on day four or five, or if it comes back after you thought you were improving, that pattern is worth paying attention to. A fever that worsens several days into a cold rather than improving can signal a secondary bacterial infection like sinusitis or an ear infection, where bacteria take hold in tissues already irritated by the virus.
Cold Fever vs. Flu Fever
One of the most practical reasons to understand cold-related fevers is that they help you tell a cold apart from the flu. With a cold, if there’s a fever at all, it’s not high. You might feel slightly warm or notice a mild reading on a thermometer, but you’re unlikely to feel the intense, sudden onset heat that comes with influenza.
The flu typically brings a fever that hits fast, often alongside chills, body aches, and a headache. That combination of high fever plus full-body misery is a strong signal you’re dealing with influenza rather than a cold. COVID-19 can look like either illness, with symptoms ranging from cold-like to severe flu-like, so temperature alone won’t reliably distinguish it from a cold.
RSV infections also cause fever along with coughing and, in some cases, wheezing or difficulty breathing. If you’re seeing a fever paired with labored breathing, especially in a young child or infant, that’s a different situation from a simple cold.
Managing a Cold-Related Fever
Because cold fevers are low grade, many people ride them out without treatment. A mild fever is your immune system working, and there’s no medical requirement to bring it down if you’re otherwise comfortable. Staying hydrated and resting will do more for your recovery than focusing on the number on the thermometer.
If the fever is making you uncomfortable, over-the-counter pain relievers and fever reducers can help. For children, acetaminophen or ibuprofen are appropriate for bringing down a fever. The CDC specifically warns against giving over-the-counter cough and cold medicines to children younger than six, as these can cause serious side effects. Fever reducers are fine for young kids, but check with a pharmacist or pediatrician on the correct dose for your child’s age and weight.
Signs the Fever Isn’t Just a Cold
A low-grade fever in the first two or three days of a cold is unremarkable. But certain patterns suggest something beyond a simple cold is happening:
- The fever is higher than expected. A temperature above 101 or 102°F goes beyond what a typical cold produces and may point to the flu, COVID-19, or another infection.
- The fever gets worse after a few days. A cold fever should improve as the illness progresses, not intensify. Worsening fever several days in can indicate a bacterial infection developing on top of the original virus.
- Symptoms last beyond 10 to 14 days. Viral illnesses generally resolve within this window. Persistent symptoms, especially with ongoing fever, suggest bacteria may have moved in.
- An infant under two months has any fever. The American Academy of Pediatrics flags a temperature at or above 100.4°F (38°C) in infants 8 to 60 days old as requiring medical evaluation, even if the baby otherwise looks well.
A cold with a brief, mild fever is one of the most routine illnesses you’ll experience. It resolves on its own, rarely needs medication, and doesn’t usually interfere with your life for more than a few days. The fever itself is the least memorable part of a cold for most adults. When it behaves differently, that’s when it becomes useful information.