Counterpoint: http://www.nature.com/news/cold-viruses-thrive-in-frosty-con...
[...]low temperatures dampen natural defences against rhinoviruses, the leading causes of seasonal colds, in mice and in human airway cells[...]
[...]low temperatures dampen natural defences against rhinoviruses, the leading causes of seasonal colds, in mice and in human airway cells[...]
https://academic.oup.com/fampra/article-lookup/doi/10.1093/f... https://www.ncbi.nlm.nih.gov/pubmed/16286463?dopt=Abstract&h...
But it does and even links to it. (As does the article in folli's link.)
What they discovered was that when a virus invaded warmer cells, the host cells produced significantly more interferons -- proteins that "interfere" with the spread of a virus by warning healthy cells of its presence and setting off an immune response.
In the cooler nasal cavity cells, this warning system was less efficient however, and allowed the virus to spread more easily.
http://www.smithsonianmag.com/smart-news/there-scientific-re...
Cold weather does not cause a cold, but increases the statistical probability of contracting one.