.Shimano is releasing silent freehubs again next year. Shimano hubs are easy to service, and having adjustable cones is nice for long wear life. I wouldn't call any hub weather proof, no matter what.
Onyx hubs are dead silent, as well as stealth hubs too. Neither of which are weather proof either.
DT Swiss are really quiet and as weather proof (and easy to service) as you can get. I used to like Shimano but now without XD compatibility I can't recommend them, especially given how heavy Shimano cassettes are.
Take a look at Project 321 hubs. I've only had a month on mine but they are getting race reviews and are super quiet. Should be pretty weather resistant too.
DT Swiss are really quiet and as weather proof (and easy to service) as you can get.
^This. DT240s (or 350s if you don't want to get quite so spendy) are quiet and light, a piece of p!ss to take apart, and don't seem to be at all perturbed by the wonderfully inclement weather we're so often blessed with in the UK You do get a bit more of a buzz if you want more POE and switch to the 54T star ratchet, but it's still barely audible over tyre buzz. TBH the only issue I've had since switching Hope for DT is that people can no longer hear you approaching...
I slightly crushed the pawl springs on my pro 4 to quiet it down. And added more grease. Made a noticeable difference to noise and hasn't hurt reliability or engagement. Hope being hope probably go with over strong springs on purpose. If you get it wrong cost peanuts to fix