That part is getting a lot better with e-bikes, which is part of why I mentioned them. :) I'm in NYC, where the temperature does vary at least that much between

That part is getting a lot better with e-bikes, which is part of why I mentioned them. :) I'm in NYC, where the temperature does vary at least that much between summer and winter, and I recently got an e-bike in preparation for our office reopening, because I wanted to be able to avoid the subway in more weather than I'd be happy using an ordinary bike for (especially while the office's showers are closed!). On warm days, I can easily get up the bridge without sweating if I let the pedal assist do its thing and don't try to go super fast. And on cold days, if I do the same thing, I don't have the problem where I start to sweat under warm clothes - I can wear exactly what I'd wear without a bike (a warm jacket, decent inner layers, and gloves, nothing more complicated than that) and it works fine, too. It's a lot harder if it's more than a few degrees below freezing, extremely hot, or heavily raining/snowing, but I think it's pretty manageable most days. But also, that's one of many reasons that bike infrastructure isn't enough to displace car infrastructure on its own. Good public transit helps, apart from being a viable year-round transit option in its own right, helps here because it allows people to decide that they can bike on days with good weather, knowing they have fallback options the rest of the time, whatever their own comfort level with with weather may be. And frankly taxis/ride-hailing services can also solve the problem of getting people from place to place without requiring a huge amount of parking spaces.