Cold, dry air can make your nose run because the nasal passages warm and humidify the air you breathe. The lining adds moisture, and some of that fluid can drain from the nose. This reaction can happen without a viral cold.
The nose conditions incoming air
Your nose helps warm and moisten air before it reaches the lower airways. In cold, dry conditions, this process can stimulate nasal secretions. Researchers describe runny nose and congestion that begin within minutes of cold-air exposure and ease when exposure ends. [1]
It is not always an infection
A runny nose can be a symptom of a viral infection, but a short-lived response outdoors in cold air can happen without one. The timing matters: a reaction that starts in the cold and improves after warming differs from symptoms that persist with illness.
People may respond differently
Some people notice more nasal drainage or burning than others. The medical literature calls cold-triggered symptoms nonallergic or cold-induced rhinitis, though the precise response varies.
Does cold weather itself give you a cold?
No. A common cold is caused by a virus. Cold air can trigger nasal symptoms, but that response is not itself a viral infection.
Sources and evidence
- PubMed — Upper airways reactions to cold air ↗
Reviews nasal symptoms such as runny nose, congestion, and burning triggered by cold-air exposure.
- PubMed — Cold dry air-induced rhinitis ↗
Studies nasal responses to inhaling cold, dry air.
Sources consulted: 15 October 2026. Written with AI assistance and checked against the linked references; not independently reviewed by a subject specialist. Sources do not endorse this article. See our editorial policy.
Revision: Initial publication; the explanation was checked against linked institutional, medical, or scientific references. This article was prepared with AI assistance and has not received independent expert review.