Humboldt County, California, is a great place to operate an organic dairy farm. The mild temperatures and ample annual rainfall allow cows to be in pasture 200 days or more a year. The county is roughly bounded by the Shasta-Trinity National Forest on the east and Pacific Ocean on the west. Warmed by the ocean currents, Eureka (the county seat) enjoys average temperatures ranging from 41 F (in December and January) to 64 F (in August and September).