The National Weather Service has issued frost advisories and freeze warnings across parts of Southern Oregon and Northern California as the coldest temperatures of the season arrive. Frost and freezing conditions are expected Sunday and Monday mornings, with possible slick roads in Lake and Modoc counties and sneaker wave danger along the coast.

A Frost Advisory is in effect early Wednesday for parts of Klamath, Lake, and Modoc counties as a cooler air mass and clearing skies could push temperatures into the low to mid 30s. Sensitive plants, pets, livestock, and agriculture may be affected.