How to get rid of snow fall in flatlands minecraft?

So I like to build in minecraft and I customize the land to flatlands so I don't have to search for flat surface. But every world I create with flatlands has snow. I can't find anywhere with just rain. And it's hard to build "summer themed" places with snow on the ground. It looks weird. I even open a map and it shows that it's snow everywhere. I have 1.7.4 and I really don't want to download anything I just want to know how to stop it. And I don't mean just saying /weather clear or /toggledownfall… I need something permanent because when it snows, I can turn it off like that but there's still a bunch of snow on the ground, so that doesn't help me any. I just want to know why it's doing this and how to stop it. And please don't complain or say something negative. It's just a question, I will give bad ratings if your rude.

Added (1). Brad, I've made several… It's all the same
Bdloving, That's what I use…

People: Everytime I do flatlands/superflat all it does is snow. No rain. What so ever. It's not even suppose to do that. And it's the minecraft texture pack. I've tried opening new worlds everytime. Same thing. Still snow

Added (2). Wadu: It says extreme hills? I think that's where I'm suppose to look. It was after the b

You can't. Just make maps until you find what you want.

Create New World
More World Options
World Type = Superflat

OK, i think i found the problem.
Here is a guide to fix it.
Step 1: Click on Create a new world
Step 2: Click on 'More world Options'
Step 3: Set the world type to 'Flatland'
Step 4: Click on 'Customize'
Step 5: Click on 'Presets'
Step 6: Click on 'Classic Flat'
Step 7: Click on 'Use Preset'
Step 8: Click on 'Done'
Step 9: Click on 'Done' (again)
Step 10: Choose the name for your world
Step 11: Click on 'Create new world'

If this doesn't work, try it in 1.7.2
If it also doesn't work in 1.7.2 then let me know