Tillamook County Emergency Management has issued a Frost Advisory until 08:00AM Monday. Temperatures will drop into the 30s overnight away from the beaches and headlands, with some of the colder valleys dipping into the lower to mid 30s. This advisory is for the Coastal valleys near the South Washington Coast, North Oregon Coast and Central Coast of Oregon. It is expected from midnight tonight to 8 AM PDT Monday. Coldest temperatures will be between 4 AM and 7 AM.