It's 66 °F outside right now in Provincetown - and we're having a brief bout of September in August. (September is easily the most beautiful month to visit here, if you have some time off). I'm told this is the sort of thing you are really interested in.
This article available online at:
http://www.theatlantic.com/daily-dish/archive/2008/08/weather-blogging/212764/
