No surprise that after a hot dry summer like this one the trees should start turning early. Though it's not a turn exactly- more the Japanese 'lose saturation and go yellow.' I recall with apprehension similar hot dry summers and the unwillingness of their dingy leaves to fall afterwards. Fortunately they've called off the La Nina, or rather, said it may or may not happen ie it will not be '07-08 again. Hope this is true. Be cold, just don't be snowy.