Mean annual precipitation is 45 to 70 inches. The frost-free season is 140 to 180 days. These are the Barneston , Montborne , Rinker , and Sehome soils and the competing Heisler and Squires soils. Barneston soils are deep and are sandy-skeletal. Montborne and Rinker soils have a frigid temperature regime.
Sehome soils are coarse-loamy.
A perched water table is as high as 2 to 3 feet at times from December through April. Used for timber production, wildlife habitat, and some cropland and homesites. The series is of moderate extent. Skagit County Area, Washington, 1981.