I've not had weather of any sort for a while, so I expect it's completely down to how the game feels at the time.
Funny you mention the temples, too. I've recently started a new seed on the PS3 version as I want to try out some new building styles and my previous seed didn't really suit it. Firstly, started in a great place - right on the coast, in a forest, lots of sheep about (for a bed on the first night), near a jungle with ocelots, and there are loads of wolves in the forest too.
Since I managed to get set up so quickly, I went exploring. The map contains loads of exposed lava, an example of every console biome (including the mushroom island), three villages (two of which have potatoes/carrots) and a desert temple. Also surrounded by sink holes and canyons with visible gold. Never had a seed with so much easily-accessible stuff before.