I'm up near Tacoma, so have similar weather. I'll be riding tomorrow with an expected temp of 30 F or so. I know it hasn't rained for a few days and that the area I'll be covering is dry. Having said that, I do not ride over ice . Snow I do ride over, but ice , well it's not for me. Studded tires would make it ok, but I have none. My point is, you probably know where the areas of moisture are along your route. If so, avoid them when it has frozen. Otherwise enjoy the ride.