Rainbow Falls State Park
October 2026
About
Rainbow Falls State Park is a 139-acre camping park with 3,400 feet of freshwater shoreline on the main stem of the Chehalis River. The park is a walker’s paradise. Miles of loamy trails wind through the forest and along the river, to a small cascade that throws rainbows of spray at the sun.
Is Rainbow Falls State Park fully booked?
A campground showing no availability is almost never full for good. People cancel — plans change, weather turns, someone books three weekends and keeps one — and the site goes straight back into the booking system, usually without warning and often at odd hours. The reason sold-out campgrounds feel impossible is not that sites never free up; it is that nobody is watching at the moment they do.
CampHawk watches Rainbow Falls State Park in Chehalis, WA for you. We recheck it every 15 seconds, around the clock, and the moment a site opens we send a text, an email and a push notification, with a link straight to the booking page.
Searching is free and needs no account — the calendar above is live right now. Watching Rainbow Falls State Park for cancellations is the paid part.