yes
If you only have the base game and other expansion packs it won't. The Sims 3 Seasons is coming out in November 2012. So it will include weather in that pack. Hope this helped.
No, but you can buy the sims 2 platform then the sims 2 seasons expansions back and there you have it! Even though the quality is not as good but seasons on sims 3 may come in the near future :)
You can install the expansions for The Sims 3 in any order you want, but when you play the game you will have to use the disc for the latest expansion to launch the game.
No, Seasons is only an expansion pack you need the base game to play it.
the Sims 3 seasons
The sims 3 base game does not come with weather. As of now, there has been no confirmed weather expansion either. I am sure that EA will come out with some sort of expansion that includes weather though!
sims 2 seasons
As with any Sims 3 expansion pack (and even in the base game itself), your Sim can get pregnant, as long as you do the action 'Try For Baby' with your husband/wife.
Your Sim grows up the same as in the base game even if expansion packs are included.
Yeah
Yes. Seasons is an expansion pack that requires the basic game to play.
Sims 2 is the base game, Double Deluxe is the base with the Nightlife expansion pack included.