Reply by tenontim

Tony, as I remember my days in Guam, the relative humidity was just a couple of percent short of raining. All the lumber in Guam is imported, so you will have to give it time to soak up all of that moisture. If the hardware store had the lumber inside, it’ll stay fairly straight, until you store it outside. Stack it outside for about a week, then you can mill it straight again. Hope you have a jointer, since a lot of that lumber is going to twist.

-- Tim-- http://www.tmuli.com