Earlier quoted context omitted.
How often does it snow in the Netherlands?
Amazingly, there is a city almost as dominated by cyclists in Finland (don't remember how it's called atm). The city is plowing and de-icing all the bike paths on regular basis. They're also well-lit, as people's commutes during winter months are often in the dark.
Another interesting fact is that at least some of the cycle lane markings are projected rather than painted because otherwise they would be covered by the snow.