Dollar showing signs of weakness

The  dollar  is at a 3-week low against the Aussie and British Pound. It's at a one-month low against the Mexican peso.

This comes as speculation has been increasing about a Fed rate hike tomorrow. If so that would would be the first in nine years.

This dollar weakness could all be reversed if the Fed does raise rates, however, I  think that the rate hike (if it happens) is already well discounted and the whole thing could end up to be a "buy the rumor, sell the news" type of event.

On the other hand if the Fed doesn't raise then the dollar will almost certainly sell off further.