Eugene, OR
Many homeowners schedule pressure washing in spring or summer, after the Willamette Valley's heaviest rain (which falls mostly November through February) has passed -- giving surfaces time to dry fully and making it the right window if you're prepping a deck for staining or sealing afterward.
Stain and sealant bond better to a clean, fully dry surface, so cleaning right before the drier months lines up the two jobs naturally.
Pressure washing can be done any time surfaces aren't actively wet or freezing -- the spring/summer window is simply when most people are already thinking about outdoor projects.
