A burst of cold air will give most of us a threat of frost and freezing temperatures overnight Friday into Saturday morning.
Areas most likely to see freezing temperatures will be west of the valley, while areas east will be in wider areas of frost threats, although freezing temperatures will be possible dependent on cloud cover. I have areas of potential freezing temperatures circled in red on the graphic above.
Bring in those sensitive plants and cover up the garden if you're not ready for them to die off Friday night. Areas of patchy frost will also be possible overnight Saturday into Sunday morning.