A frost advisory was issued by the National Weather Service on Friday at 2:02 a.m. valid for Saturday between midnight and 9 a.m. for North Oregon Coast Range Lowlands.
The weather service says to anticipate, "Temperatures as low as 33 degrees - 36 degrees will result in frost formation."
"Frost could harm sensitive outdoor vegetation. Sensitive outdoor plants may be killed if left uncovered," explains the weather service. "Take steps now to protect tender outdoor plants from the cold. Consider temporarily moving outdoor potted plants indoors if they are sensitive to cold temperatures. Consider temporarily covering sensitive plants with a lightweight cotton fabric (i.e., bedsheets, thin blankets), as this will help retain heat and provide frost protection for your plants."