Can anyone recommend a decent water proof/housing for the HF S20, i will NOT be diving with it but i will be shooting in the rain with it for a few takes, i can spend about 450.00 bucks max, thanks in advance.

If you're not actually going in the water I'd try something like this:

Kata CRC-17 Compact Rain Cover H KT VA-801-17 - B&H Photo Video

Then get an assistant to hold an umbrella over you or mount it to your tripod somehow - because if you're getting soaked yourself, the camera is gonna end up getting wet too from touching it.

John thank you soooo much, that will work perfect for what i am doing.

I use it all the time with my HFS100...works great!
Best, Craig