A very interesting idea, my changes actually change a lot season to season, especially from winter to summer. For me...
Post-rock
Death metal/deathcore: This tends to come in more once it gets actually hot out, but nice weather puts me in the mood for it
Melodic black metal: Stuff like Dimmu or Naglfar. I also love Summoning at night in the spring/summer
Folk/Folk metal: Though I do listen to it a lot in the dead of winter too, but certain stuff is better in ice weather
Pursuit of the Sun: This album kicked off the beginning of summer/end of spring last year when I went to a nearby forest, took a ton of pictures, with Pursuit on my headphones, and it was fantastic.
Power Metal: I listen to less than I used to years ago, but I sure seem to like power metal a lot more when its nice out, been listening to a lot of Iced Earth lately too.