High? I keep an accurate and calibrated hygrometer in the musical instrument room, and it's the rare day when it goes over 50% in Redmond. That said, I've never used one in the PNW.
According to the chart at the bottom of this article, it's not optimal, but it'll take the edge off: https://www.air-n-water.com/common-swamp-mistakes.htm. And for most summers, this one being an exception, our problems with heat are in the high desert east of the mountains.
According to the chart at the bottom of this article, it's not optimal, but it'll take the edge off: https://www.air-n-water.com/common-swamp-mistakes.htm. And for most summers, this one being an exception, our problems with heat are in the high desert east of the mountains.