Why This Week Is Actually Perfect Timing
With highs hitting 90°F and zero rain in the forecast for the coming week, Portland homeowners have a rare window to get exterior wood staining done right. I'm not exaggerating when I say this — stain needs dry wood and warm temps to penetrate and cure properly, and in this city, that combination doesn't show up on the calendar as often as people think. If you've been putting off that fence in Sellwood or the cedar trim on your Craftsman in St. Johns, stop waiting. This is your window.
The general rule I follow: wood should read below 15% moisture before you stain. After even a few dry days at these temps, most exterior wood in Portland will be there. Don't skip this check if you have a moisture meter sitting in a drawer somewhere — it takes 30 seconds and saves you from peeling stain six months from now.
Cleaning and Sanding — Don't Rush This Part
The mistake I see most often is homeowners going straight from "the wood looks dry" to cracking open a can of stain. Dirty, oxidized wood won't absorb stain evenly, and you'll end up with a blotchy mess that peels in one Portland rainy season.
My process: pressure wash at low PSI (600–800 for fences, lower for trim), let it dry a full 24–48 hours, then hit it with 80-grit sandpaper to open up the grain. For old fences that have gone gray, I'll use a wood brightener like Defy Wood Brightener to bring the pH back before staining. It makes a real difference in how evenly the stain soaks in.
One more thing — check every board for loose nails, popped screws, or soft spots before you pick up a brush. Stain won't fix failing wood, and I've seen plenty of homeowners finish a beautiful stain job only to have a fence board blow off in November.
Choosing the Right Stain for Portland's Climate
I get asked about product recommendations constantly, and I'll give you the same answer I give every customer: for fences and rough-sawn siding in the Portland area, I reach for Armstrong Clark Semi-Transparent in a cedar or redwood tone. It penetrates deep, doesn't peel the way film-forming stains do, and holds up through our wet winters better than most products at that price point.
For smooth trim or T1-11 siding where you want more color and coverage, Cabot Australian Timber Oil is another solid choice. Avoid the bargain-bin stuff at the big box stores — it looks fine going on and fails by March.
When to Call Someone In
If your prep work reveals soft or rotted boards, popped siding, or more surface area than you want to deal with in the heat, that's a reasonable place to stop and call in help. At EVN Handyman, we handle exactly this kind of project — prep, repairs, and staining — for homeowners across Portland, Beaverton, and Vancouver. Sometimes having someone knock it out in a day is just worth it.
But if your wood is in decent shape and you've got the time, this week's weather makes it as DIY-friendly as it gets in the Pacific Northwest. Get after it.