"For the better"

I had this argument thingy with my English teacher, because I used "For the better" in a sentence. ("Even though the weather is nice, it is for the better not to forget your umbrella".) Now, I know it was most likely better to write "Even though the weather is nice, it's better not to forget your umbrella." but, alas, I kind of forgot about that.

So, my question is, was the first sentence correct english or not ? ^^
Thanks !

[Tdol]

Did you post this elsewhere? I'm sure I answered earlier. It's a clumsy sentence. It is the kind of form that might be found in a dialect, but I don't know whether it is.

[Flash]

What about the expression 'a change for the better/worse'? I don't think they are clumsy

[Tdol]

That's fine- I was only speaking about this context.