Actually, this is the first time I've found it particularly annoying in A17 (admittedly, this is also the first time I've played a17 for more than a day or two with a random gen map), and I didn't mind it particularly in A16 (it was a bit annoying, but manageable.) For some reason, I don't know if it's where I'm living or what, but the temperature keeps going from 80 to the mid-30s and back multiple times a day, even if I'm in the same biome. Admittedly, it also is really weird that I can walk for 15 seconds and go from 15 degrees to 120 degrees.
I don't know if there's a point where I can eventually get clothes/armor where I'm fine in all weather (I've always just switched puffer coat/poncho previously in a17, where I only found a need when going into different biomes), at which point it'd be fine, it's just the fact that I'm having to constantly switch clothes multiple times per in-game day that's pushed me to the point I don't want to deal with it any longer.
Edit: The fact that the game claims I'm freezing in mid-30s weather in which I might just start thinking about putting on a coat in real life is bugging me too. I rarely wear a coat when the temperature is above freezing, and would only zip one if the temperature is in the 20s and I'm basically just standing still.
Tell you what, when the temperature starts behaving like actual temperature in the real world, I'll happily play with weather effects turned up to potentially lethal levels. When there are multiple 40+ degree temperature swings in a single biome in the course of a game day, I'm not interested in putting up with it.