[KingMachiavelli]

Rain? I'd be more worried about snow. Looking at climate data just on Wikipedia, the Netherlands gets about the same number of 'snowy' days as Denver and it gets more total precipitation. It's winter average temperatures are also a tad lower which really makes me wonder what they do when there is snow & ice on the streets. I'd certainly wouldn't want to be riding my bike in Denver today (the front range got >1ft of snow over the past few days).

[hb0ss]

Usually the government is pretty good at clearing the snow and ice. Small roads you have to cycle carefully. I have slipped and fallen on icy roads numerous times when I was younger, just part of the cycling deal is what I always thought.

[teekert]

I think in the last 5 years I was bothered by snow about 2 times.

[pletnes]

Get winter tires with spikes. Work great on snow.