27% of current cyclists (who usually bike to work or school in spring and fall) continue to bike through the winter months. It’s both a high and a low number. On one hand, a quarter of all cyclists bike all year round, so clearly there is potential for winter cycling. On the other hand, there is still a lot of work that would need to be done for more people to consider biking in the winter.

The probability of biking in winter is associated with increased access to on-street cycling facilities such as bike lanes and cycle tracks near the shortest route of travel.

Women, compared to men, were less likely to bike in all seasons.

Source: http://dandyhorsemagazine.com/blog/2018/02/13/new-research-on-winter-cycling-from-ryerson/